Selwood Seltorque s150 User manual

Selwood Seltorque S150 Manual

SELWOOD SELTORQUE S150

Model Designation

From the 1st January 2004 the Seltorque 150C will be

known as Seltorque S150.

Operating and Service Manual

The roducts of Selwood Limited, are designed,

develo ed and roduced in the com any's Chandler's

Ford factory. Many features are covered by world-

wide atents. Product names such as S ate, Sim lite

and Seltorque, are registered trade marks.

As all roducts are subject to continuous develo ment,

the com any reserves the right to alter the

s ecifications and information given in this manual

without rior notice.

Whilst every care has been taken in the re aration of

this ublication the information it contains must not be

regarded as binding.

Amendments to this ublication will only be issued to

cover those design changes which fundamentally alter

the build or o eration and servicing rocedures. They

will be distributed through the com any's dealers and

agencies.

Published by Selwood Limited.

Instructions or Ordering

Replacement Parts

1. Always quote the um serial number located on

the late fastened to the bearing and air um

mechanism housing.

2. Always quote the art number(s) (ten digit) of the

com onent(s), NOT the item number(s).

3. Always quote the descri tion of the com onent(s).

Items usually su lied together as sub-assemblies will

have the sub-assembly art number rinted at the

bottom of the relevant age.

Additional co ies of this manual may be ordered from

Selwood Limited, Pum Division, by quoting the

ublication number shown on the outside back cover.

HEALTH AND SAFETY AT WORK

A ril 1975

As manufacturers of um s and associated equi ment

we wish to inform you that, in com liance with Section

6 of the Act, safety recautions should be taken with

our roducts.

We take every care to ensure as is reasonably

racticable that our roducts are safe and without risk

to health when ro erly used. Nevertheless,

a ro riate health and safety recautions must be

taken, and in articular you are requested to have

s ecial regard to the o erational and safety

requirements leaflet P769 which accom anies each

um on des atch from our remises.

Our roducts also conform to the E.E.C. Machinery

Safety Directive and carry the C.E. mark.

CALIFORNIA USA

PROPOSITION 65 WARNING

Diesel engine exhaust and some of its

constituents are known to the State of

California to cause cancer, birth

defects, and other re roductive harm.

WARNING

Pum s and engines may be fitted with

seals or 'O' rings manufactured from

VITON or similar material.

When tem eratures reach 400°C

(720°F) a corrosive acid is roduced,

which cannot be removed from the skin.

If signs of material decom osition are

evident, or if in doubt,

always wear

disposable heavy-duty gloves.

Selwood Seltorque S150 Manual

SELWOOD SELTORQUE S150

CONTENTS

Title Page

1 GENERAL INFORMATION..............................3

1.1 Installation ........................................................3

1.2 O eration..........................................................3

1.3 Maintenance .....................................................3

1.4 I.C. Engines ......................................................3

1.5 Fitting Instructions for Centaflex Cou lngs

(Diesel Engines) ...............................................3

1.5.1 Pre aration of the Centaflex Cou ling for

Pum Removal..............................................4

1.5.2 Centaflex Cou ling Assembly Sequence....4

1.5.3 Re lacement of Steel Hub and Rubber

Element ..........................................................4

1.6 Electric Motors..................................................5

1.7 Fitting Instructions for Fenner Cou lings

(Electric Motors) ...............................................5

1.8 Seltorque S150 Standard Data.........................5

2 ROUTINE MAINTENANCE..............................5

3 LUBRICATION AND FASTENING TORQUES6

3.1 Pum Lubrication..............................................6

3.1.1 Commissioning Period..................................6

3.1.2 After Commissioning Period.........................6

3.2 Fastening Torques............................................6

4 CONDITIONS OF WARRANTY .......................7

5 MAJOR SERVICING........................................7

5.1 Air Pum Maintenance .....................................7

5.1.1 Delivery and Suction Valves (A07)...............7

5.1.2 Actuator Valve (A16) .....................................7

5.1.3 Actuator Seal (A18) .......................................7

5.1.4 Actuator Neck Seal (A21) .............................8

5.1.5 Drive Rod Seal Assembly and Bearing

(A25 and A28)................................................8

5.2 Se arator Maintenance ....................................9

5.2.1 Float (B11)......................................................9

5.2.2 Peel Valve (B21)............................................9

5.2.3 De osits of Solids........................................10

5.3 Im eller, Mechanical Seal and Delivery

Valve Maintenance .........................................10

5.3.1 Im eller (C04) ..............................................10

5.3.2 Mechanical Seal (C08)................................11

5.3.3 Delivery Valve (C27)....................................12

5.4 Maintenance of Flushing Chamber, Air

Pum Mechanism, Drive Cou ling, Drive

Shaft Bearings and Li Seal ...........................12

5.4.1 Flushing Chamber (D33).............................12

5.4.2 Air Pum Mechanism..................................13

5.4.3 Bearings and Li Seal (D15, D18 and

D04) ..............................................................14

5.5 Chassis Maintenance .....................................15

5.6 Su ersilent Cano y - Cano y Removal..........15

5.7 Su ersilent Cano y - Fuel Tank Removal ......16

5.8 Su ersilent Cano y - Fuel Tank Re-fitting......16

5.9 Su ersilent Cano y - Cano y Re-fitting .........17

6 WORKSHOP TOOLS .................................... 17

6.1 Care of Servicing Tools.................................. 17

6.2 Fitting of Actuator Neck Seal.......................... 17

6.3 Removal of Mechanical Seal Stationary

Seat and Joint Ring........................................ 17

6.4 Removal of Drive Rod Seal Assembly ........... 18

6.5 Fit Seal Housing Sub-Assembly to Pum ...... 18

6.6 Remove Drive Rod Bearing Bush .................. 18

6.7 Fit New Drive Rod Bearing Bush.................... 18

6.8 Assemble Flushing Chamber ......................... 19

6.9 Remove Eccentric .......................................... 19

6.10 Remove Im eller............................................ 19

6.11 Fit Re lacement Drive End Bearing ............... 20

6.12 Fit Re lacement Im eller-End Bearing .......... 20

6.13 Assembly of Drive Shaft with Bearings into

Housing.......................................................... 21

7 FAULT FINDING GUIDE ............................... 22

8 PARTS LIST .................................................. 27

8.1 Air Pum Parts............................................... 27

8.2 Se arator Parts.............................................. 29

8.3 Pum Body and Delivery Valve Parts ............ 31

8.4 Bearing Housing and Air Pum Drive

Assembly Parts .............................................. 33

8.5 Isuzu/4JG1 Pum Unit, Core Build on Skid

Chassis .......................................................... 35

8.6 Isuzu/4JG1 Pum Unit, Build ‘A’ on Skid

Chassis .......................................................... 37

8.7 Isuzu/4JG1 Pum Unit, Build ‘B’ on Skid

Chassis .......................................................... 39

8.8 Isuzu/4JG1 Pum Unit, Build ‘C’ on Skid

Chassis .......................................................... 41

8.9 Isuzu/4JG1 Pum Unit, Su ersilent Cano y

Build on Skid Chassis .................................... 43

8.10 Deutz/F4L1011 Pum Unit on 4-Wheel

Chassis .......................................................... 45

8.11 Deutz/F4L1011 Pum Unit on Skid Chassis .. 47

8.12 Fast Tow Kit, O en Set .................................. 49

8.13 Fast Tow 4-Wheel Chassis ............................ 51

8.14 4-Wheel Site Chassis..................................... 53

8.15 Detroit 3105 on 4-Wheel Site Chassis, Build

‘B’ ............................................................ 55

8.16 Detroit 3105 on Skid Chassis, Bulid ‘B’ .......... 57

9 WIRING DIAGRAMS

9.1 Isuzu 4LE1 Engine/Cano y............................ 58

9.2 Fast Tow trailer Ligting Circuit........................ 59

9.3 Deutz - Wiring Diagram.................................. 60

9.4 Detroit - Wiring Diagram................................. 61

Selwood Seltorque S150 Manual

1 GENERAL INFORMATION

1.1 Installation

1. The um unit and its associated base late or

trolley mounting should be ositioned on a firm

horizontal latform, and in the case of ortable

units restrained from accidental movement.

2. If the um is fitted with ush-on ty e suction and

delivery s igots the hoses must be firmly secured

on these s igots with heavy duty clam s or cli s

ca able of withstanding the system o erating

ressure.

3. The integrity of the hose clam ing arrangements

should be checked at regular daily intervals in the

case of static installations or whenever the um

is re ositioned in the case of ortable units.

4. Similar recautions should be taken with clam s

securing multi le lengths of hose on installation

where long delivery and suction lines are involved.

5. Delivery hose and any associated i ework

should be ca able of withstanding the maximum

system o erating ressure. Suction hose should

be of the non-colla sible variety.

1.2 Operation

1. The um should only be o erated within the

s eed and ressure limits detailed in the o erating

handbook for the model in question.

2. If there is a danger of freezing, the fluid normally

retained within the um between o erating

cycles should be drained off through the drain ta s

rovided.

3. Where rotective ca s are used to revent

damage to the suction and delivery s igots during

storage or in transit they must be removed before

the um is started u .

1.3 Maintenance

1. Ins ection and maintenance rocedures are

detailed in the o erating and servicing manual for

the model in question.

2. Re lacement arts. Only the manufacturers or

factory a roved com onents should be used as

re lacement arts and where necessary they

should be fitted with the assistance of the s ecial

ur ose tools indicated in the o erating and

servicing manual.

3. All maintenance work must be carried out with the

um and engine/motor stationary.

1.4 I.C. Engines

1. Where I.C. engines are used to ower the um

they have been mounted in accordance with the

engine manufacturers recommendations and

adequate guarding rovided between the um

and engine.

2. Exhaust and Exhaust Pipes. If there is a risk of

accidental contact by o erators, the exhaust

system should be lagged or screened and the

outlet directed away from o erators or other

ersons likely to be nearby. Direct contact with

flammable materials of all ty es must be avoided.

The im ortance of adequate ventilation to ensure

removal of exhaust fumes when engines are

o erated in enclosed or covered accommodation

cannot be over-stressed. Engines should not be

run in hazardous ex losive atmos heres.

3. Access and Operation. Ensure that the o erator

can start, control and sto the engine easily by

making all controls readily accessible. Fit remote

controls if access is difficult. Follow the

instructions laid down in the Engine

Manufacturer's O erators Handbook for starting,

o erating and sto ing rocedures.

4. Fuel. In addition to the fire hazard associated with

fuel and lubricating oils, reventative action is

necessary with res ect to leakage, contamination

and bodily contact.

5. Electrical Connections. It is essential that earth

terminals are connected with an absolutely sound

earth oint and care should be taken to ensure

that the correct sized conductors are selected to

suit the current and distance to be carried.

1.5 Fitting Instructions or

Centa lex Couplings (Diesel

Engines)

IMPORTANT NOTES – OBSERVE STRICTLY:

The Centaflex Cou ling Assembly is su lied in a re-

assembled state and must be fitted to the um drive

shaft and engine flywheel in this state. On no account

should any of the com onents that make u the

cou ling assembly be dismantled unless it has become

necessary to service one of the com onent arts.

Ty ically, the most likely com onent to require

re lacement will be the rubber element and servicing

of this item is ex lained in Section 1.5.3 below.

The cou ling assembly consists of a central steel hub

whose outside diameter locates within a bore of a

rubber element and is secured within the element

using three ca screws that ass radially through its

outer diameter. In turn, the rubber element locates

onto three horizontal ins, equally dis osed on a PCD

and each secured to the face of a steel ada tor late

with ca screws. The ca screws securing both the

central steel hub and the horizontal ins are torque

tightened to the values shown in the table in Section

1.5.2 below.

Selwood Seltorque S150 Manual

The rubber element itself is free to slide on the

horizontal ins. It is therefore unnecessary to remove

the ca screws that secure the ins unless the ins

themselves have become damaged.

1.5.1 Preparation o the Centa lex Coupling

or Pump Removal

NOTE: Before commencing, mark the osition of the

cou ling assembly on the um drive shaft. Pay

articular attention to the size of the ga between the

back of the rubber element and the face of the steel

ada tor late. This ga has been factory set and is

maintained when the setscrew in the steel hub is

locked in osition.

1. In order to allow the um drive shaft to be

withdrawn from the steel hub of the cou ling, it will

be necessary to loosen the setscrew located in the

outside radius of the steel hub just in front of the

rubber element. The setscrew clam s the

cou ling assembly onto the to of the um drive

shaft key and it is not necessary to com letely

remove this screw.

2. Once the setscrew is loose the um drive shaft is

free to be withdrawn from the hub of the cou ling.

Note too that when the setscrew is loose the

cou ling assembly is free to slide in either

direction onto the um drive shaft or onto the

horizontal ins.

1.5.2 Centa lex Coupling Assembly

Sequence

1. The radial and axial screws connecting the rubber

element to the hubs must all be tightened to the

torque given in the table below, using a torque

wrench.

Tightening Torque

Centa lex

Size

Screw

Size Nm mK

16/22 M12 85 8,5

25/28 M14 140 14

30 M16 220 22

2. Tightening with a torque wrench is articularly

im ortant. Tightening by feel will not do as

ex erience has roved the tightening torques in

such cases are far too low. Tightening torques

which are too low will inevitably lead to slackening

of the screws in service and consequently to the

destruction of the cou ling.

3. Ensure that on tightening the screws, the

aluminium bushes in the rubber art are not

twisted at the same time, but sit straight. In order

to reduce friction between the screw head and the

aluminium art, a small amount of grease should

be a lied under the head of the screw before

fitting.

4. If necessary, use a suitable tool for a lying

counter ressure on the element to revent

twisting of the rubber art during tightening of the

screws. This is articularly im ortant with radial

screws, otherwise the cylindrical faces between

the aluminium insert and the hub will not engage

on the full area, but only on two corners. This will

inevitably lead to slackening of the screws and

subsequent destruction of the cou ling. If the

cou ling is su lied in a re-assembled state do

not dismantle it, but fit it in this condition.

1.5.3 Replacement o the Steel Hub and

Rubber Element

NOTE: Once the Centaflex cou ling has been

re ared in accordance with Section 1.5.1 above, it is

free to be removed from the horizontal ins on the face

of the ada tor late.

1. If it becomes necessary to re lace either the steel

hub or rubber element, the three radial ca s

screws must be removed in order to se arate the

two com onents. When removing these ca

screws it is recommended that the cou ling

assembly remain on the horizontal ins for ease of

their removal.

Once the three radial screws are removed, the steel

hub can be se arated from the rubber element.

Also at this stage the rubber element can be

removed from the horizontal ins of the ada tor

late.

3. Re lace the rubber element and/or steel hub as

necessary to refurbish the assembly.

4. Fit the rubber element onto the horizontal ins of

the ada tor late.

5. Insert the steel hub into the centre of the rubber

element and align the radial mounting holes with

ta ed holes in the hub.

Selwood Seltorque S150 Manual

6. Fit the three radial ca screws in accordance with

the instructions at Section 1.5.2.

7. The cou ling assembly is now re ared for the

re lacement of the um .

8. Once the um drive shaft is engaged in the

cou ling hub bore, set the osition of the cou ling

assembly to that reviously marked when Section

1.5.1 was erformed.

9. Tighten the setscrew that locks the steel hub of

the cou ling assembly to the um s drive shaft

key.

1.6 Electric Motors

1. All electrical connections should be made through

adequately rated conductors and starters.

Isolators and other associated switchgear should

be of adequate ca acity for the im osed ower

loadings. All electrical equi ment should be

adequately earthed.

2. Isolate the ower su ly before carrying out any

commissioning, servicing or maintenance work on

the um or electric motor.

3. Where electric motors are to be o erated in

hazardous or ex losive atmos heres they should

be of the flame roof enclosure ty e a ro riate to

that atmos here.

You are requested to take such ste s as are

necessary to ensure that this information is made

available to all those involved with the use of our

roducts. This information must be made available not

only to your own em loyees at their work lace, but

also to anyone who may urchase or otherwise

acquire (hire) such roducts for use in his own

work lace.

It is our intention constantly to review our obligations

under the Act and we will be issuing from time to time

further information with regard to the safe a lication,

use, ins ections, and service associated with our

roducts.

1.7 Fitting Instructions or Fenner

Couplings (Electric Motors)

1. Adjust osition of um on chassis until the inside

faces of the cou ling flanges are arallel to each

other. The distance between the faces should

measure from 24 to 29mm (15/16” to 1 1/8”).

Whilst adjusting the um ’s osition, it is also

necessary to achieve alignment of the shaft

centre-lines within 1.5mm (1/16”) of each other by

laying a straight edge cross the two flanges at

several ositions around their circumferences.

Fully tighten the nuts immediately the cou ling

flanges are correctly aligned. Recheck alignment

after tightening.

2. The flexible cou ling assembly should now be

com leted. O en-out the tyre and fit over the

cou ling flanges ensuring the tyre beads seat

ro erly on the flanges. To ensure ro er

seating, it may be necessary to strike the outside

diameter of the tyre with a small mallet. When

seated there should be a ga between the ends of

the tyre of about 1/8” (3mm). Tighten clam ing

ring screws in flange alternately and evenly

(a roximately half a turn er screw) working

round the flange until 17lbf ft (2.35kgf m) torque is

achieved.

1.8 Seltorque S150 Standard Data

Ca acity (max) 400M3/h

88,000 UK gal/h

Delivery Head (max) 21.3m

70ft

Self Priming Lift (max) 8.8m H20

29ft H20

Solids Size (max) 100mm

4in

Air Handling Ca acity:

Single 24l/s

Prime 50ft3/min

Twin 48l/s

Prime 100ft3/min

Pum S eed 1600r m Max

Port Size BS.4504 Table 6 150mm

6in

2 ROUTINE MAINTENANCE

Lack of routine maintenance is the most frequent

reason for the breakdown of um s. We earnestly

advise users to ensure that at least the following

actions are taken.

1. Check these three oil levels daily:

a) Engine oil.

b) Bearing housing oil.

c) Flushing chamber oil.

2. Always drain water from the um in cold weather

when it is not running. Drain:

a) Pum body.

b) Delivery valve chamber.

c) Both sides of air um (4 drain ta s if twin

rime).

3. Do NOT run the um if significant quantities of

water esca e through the exhaust valve of the air

um . This um is designed to handle moisture-

laden air, but not to um a high ercentage of

water. Refer to servicing instructions for further

advice.

4. Do NOT run the um if malfunction is sus ected

in any of its arts. In articular, it must

immediately be serviced if the level of oil in the

flushing chamber varies daily, or if the oil becomes

contaminated with the um ed fluid.

5. A hose strainer should always be fitted to the free

end of the suction line if there is a ossibility of

oversized solids entering the um . The

dimensions of rocks, ebbles, etc. must not

exceed 100mm (4"). Larger soft solids, however,

of the ty e found in abattoir duties, for exam le,

will ass freely through the um . Refer to

Selwood Ltd if in need of advice in this connection.

Selwood Seltorque S150 Manual

6. As loss of rime and indeed loss of on-stream

erformance can easily arise as the result of

leaking i ework joints, we recommend that all

line fittings associated with the um should be

checked eriodically for air-tightness.

7. It is most Im ortant to use the correct fuel oil in the

engine. Make sure that it is a ro riate for the

weather conditions (summer or winter) and that it

is clean and free from water and foreign matter.

Unsatisfactory running erformance, excessive

wear and damage can all result from the use of an

Incorrect or contaminated fuel.

8. Periodically check the tension of all nuts and bolts,

es ecially those securing the engine and um to

the chassis.

9. Pum servicing must always be carried out in

accordance with the instructions given in this

manual. Only com onents su lied and a roved

by Selwood Ltd should be used. It is advisable to

hold a small stock of s are arts to cover

breakdown circumstances. The Com any will be

leased to give advice in this connection.

10. Engine servicing must always be carried out in

accordance with the instructions given in the

manufacturer's manual. Do not hesitate to contact

Selwood Ltd if the need for further advice arises.

11. Please contact Selwood Ltd in the event of

ex eriencing difficulty when servicing. The

com any will also be very leased to give advice

in connection with the machine's installation,

o eration and maintenance.

12. All ractical work must be carried out in

com liance with the Health and Safety at Work

Act, 1975. Always start the engine in accordance

with the manufacturer's instructions.

NOTE: If the above advice is followed, the likelihood

of an ex ensive break down will be greatly diminished.

The um should give a long and trouble free life if

these measures are ut into effect.

3 LUBRICATION AND

FASTENING TORQUES

3.1 Pump Lubrication

It is most im ortant to maintain the correct levels of oil

in the flushing chamber and bearing housing, and to

ensure that the oil is of the recommended quality and

is free from contamination. Selwood recommend the

use of the following BP/Castrol roducts, which should

be a lied as er the following table. In some

territories, the following grades may be known under

differing trade names, lease contact Selwood if

roblems occur in identifying the correct roduct.

COMPONENT BP GRADE

ENGINES Vanellus C5 Global

Bearing Housing C5 Global

Flushing Chamber C5 Global

Actuator Bore Castrol Rustilo 431

Im eller Bore Castrol Rustilo 431

Pa er Gaskets BP Energrease LS-EP2

Axle Shafts BP Energrease LS-EP2

Axle Pivot Assembly BP Energrease LS-EP2

M10 Screws - Port Plate

to Diffuser

Castrol O timoly Paste

DRAIN INTERVAL

COMPARTMENT

HOURS MONTHS

Engine Sum 250

Bearing Housing

Flushing Chamber 250 – 500

Actuator Bore

Im eller Bore

Shaft Sleeve Bore

ON ASSEMBLY

Pa er Gaskets

Axle Shafts

Axle Pivot Assembly

ON ASSEMBLY

M10 Screws - Port

Plate to Diffuser ON ASSEMBLY

3.1.1 Commissioning Period

Drain both um chambers and engine within 100-150

running hours of commissioning either a new, or rebuilt

um , and refill with new oil to level lugs.

Flushing chamber ca acity about 2.3litres (4 ints).

Bearing housing ca acity about 3.5litres (6¼ ints).

Engine sum – Refer to Engine Instruction Book.

3.1.2 A ter Commissioning Period

If the um is driven by a diesel engine, the oil in both

um chambers should be drained and renewed

simultaneously with the time schedule laid down by the

engine manufacturer. This will usually require the

um oils to be drained and re laced every 250

running hours. Under no circumstances should the

eriod for the um exceed 500 running hours.

3.2 Fastening Torques

Failure to tighten threaded fasteners correctly can

easily lead to assembly breakdown. It is very

im ortant, therefore, when carrying out the instructions

in this manual, to achieve the a ro riate tensioning

torques. In some cases, s ecific requirements are

described in the instructions, which must always be

im lemented. The following torques, in articular,

must be a lied.

Selwood Seltorque S150 Manual

Tightening

Torques

Item

lb t kg m

(F29)(F30) M16 Pum /Engine/Fuel

Tank to Chassis Fixings 180 25

(D36) Actuator Ca Screw

0015975000 60 8.3

(A22) Ca Screw M12

9005120552 60 8.3

(C01) Im eller Screw

9000160402 80 11

Air Pum Drive rod (D37) to Small

End of Connecting Rod (D26) - M8

Fixing (D27) to (D38)

21 2.9

4 CONDITIONS OF WARRANTY

For a eriod of six months from delivery of any

Selwood um to the first user thereof, or twelve

months from the des atch of any such um by

Selwood, whichsoever eriod is the shorter, Selwood

will re air or, at its o tion, re lace any com onent

which in the o inion of Selwood has failed due to

defective workmanshi or materials.

This warranty does not a ly to:

a) the driver or any accessories or ro rietary fittings

whatsoever;

b) any um which, in the o inion of Selwood, has

been altered, used, maintained, serviced or stored

otherwise than in accordance with Selwoods'

instructions and rofessional ractice;

c) any um from where the serial numbers have

been removed or altered;

d) fair wear and tear;

e) consequential loss or damage.

5 MAJOR SERVICING

5.1 Air Pump Maintenance

5.1.1 Delivery and Suction Valves (A07)

Failure of the um set to rime quickly or to discharge

the ex ected volume of air, may sim ly be due to faulty

valve o eration.

To ins ect and service, roceed as follows:

1. Remove air hose (single rime item (A01), twin

rime items (A39/40)) from suction valve box

(A03/A41), after loosening relevant hose cli s

(A02).

2. Note the orientation of the suction valve box (A03)

and exhaust cover (A04) before commencing.

Remove exhaust cover (A04) and suction valve

box (A03) by releasing nuts (A05) and s ring

washers (A06).

NOTE: The above actions allow the condition of the

two valve rubbers (A07) to be checked. Do NOT

attem t to remove valve studs (A08). If valve rubbers

are damaged, re lace with new com onents. Pull old

valves off stud heads, and discard.

3. Check and, if necessary, clean valve seats in

outer um body (A15) and valve box (A03).

Smear heads and grooves of studs with soft soa

and ush on new valves ensuring that they seat

correctly.

4. The valve assemblies can now be re laced by

reversing Instructions 1 and 2 of this rocedure. It

is advisable to fit new gaskets (A30).

5.1.2 Actuator Valve (A16)

Another reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be malfunction of the actuator valve (A16).

To ins ect and service, roceed as follows:

1. Remove nuts (A11), s ring washers (A12),

washers (A13) and screws (A14), allowing outer

um body (A15) to be removed com lete with

attached delivery valve assembly. The actuator

valve (A16) may now be examined. If it fails to

seat efficiently on actuator (A20) or is in any way

damaged, it should be ulled off the actuator nut

and discarded.

2. Whilst the actuator valve (A16) is removed, it is

advisable to examine the condition of the valve

seat in the actuator (A20), and also to check the

security of the actuator screw (D36). This should

be checked and tightened to 60lbf ft (8.3kgf m)

torque.

3. To re lace actuator valve (A16):

a) Smear soft soa on the conical end and

groove of actuator screw (D36).

b) Ease new valve rubber into osition ensuring

that it seats correctly.

NOTE: It is advisable to examine the condition of

actuator seal (A18) whilst it is ex osed. Refer to

Section 5.1.3 Actuator Seal (A18) for servicing

instructions.

4. To re lace outer um body assembly, fit and

evenly tighten screws (A14), washers (A13),

s ring washers (A12) and nuts (A11), by

sequentially turning each screw a small amount

until they are all fully tensioned.

NOTE: It is im ortant that the outer diameter of the

actuator seal (A18) should be evenly clam ed.

5.1.3 Actuator Seal (A18)

A further reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be a faulty actuator seal (A18).

To ins ect and service, roceed as follows:

1. Remove outer um body (A15) com lete with

delivery valve assembly. Remove actuator screw

(D36).

Selwood Seltorque S150 Manual

2. Set actuator to to dead centre (maximum

distance from inner um body), by rotating

engine shaft with starting handle. Using a tool that

will not cut the rubber (such as a blunt

screwdriver) and a lubricant (soa solution),

remove actuator seal (A18) by rising it from the

inner um body (A19).

3. Remove actuator (A20) com lete with seal from

drive rod (D37).

4. To renew actuator seal (A18):

a) Remove the failed com onent from the

actuator.

b) Insert firstly one side and then the other into

the actuator groove, using a blunt tool that will

not cut the rubber.

NOTES: The seal is handed and will not enter the

inner um body (A19) if fitted the wrong way round.

The correct assembly osition for actuator seal (A18)

is with the smaller diameter of its conical outer surface

towards the inner um body (A19). It will be seen

that the housing in the body is ta ered in the same

direction as the external surface of the seal.

5. At this stage it is advisable to examine the

condition of actuator neck seal (A21). This

com onent should be re laced if any s lits are

evident on its visible surface. Refer to Section

5.1.4 Actuator Neck Seal (A21).

6. Smear soft soa on the outside section of new

actuator seal (A18). Lightly grease actuator bore.

Position actuator/seal assembly on drive rod

(D37), locate actuator screw (D36) and tighten to

60lb ft (8.3kgf m) torque.

7. Re lace actuator valve if removed (A16) first

smearing soft soa on the conical end and groove

of actuator screw (D36). The new valve should be

eased into osition by hand.

8. Before fitting outer um body (A15), reci rocate

the actuator by fitting and rotating the engine's

starting handle about ten times to encourage

centralisation of the connecting rod bearings.

During this rocedure, the actuator seal (A18) is

likely to rotate slightly in the inner um body

(A19). Sto shaft rotation when actuator is at

bottom dead centre (minimum distance from inner

um body).

9. Seat outside section of actuator seal in inner

um body recess by gently ta ing with a non-

metallic mallet.

10. Re lace outer um body assembly, and fit and

evenly tighten screws (A14) washers (A13) s ring

washers (A12) and nuts (A11), by sequentially

turning each screw a small amount until they are

all fully tightened. It is im ortant that the outside

diameter of the actuator seal (A18) should be

clam ed evenly.

5.1.4 Actuator Neck Seal (A21)

Another reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be failure of the actuator neck seal (A21).

To investigate and service, roceed as follows:

1. Remove outer um body (A15) com lete with

delivery valve assembly, and actuator (A20) with

actuator seal (A18) as directed in Section 5.1.3

Actuator Seal (A18) Instructions 1 and 2.

2. Release hose cli (A02) allowing air hose to be

disconnected from suction valve box (A03).

Screws (A22) should then be removed, leaving

washers (A23) in inner um body (A19).

3. The inner um body can now be ulled by hand

from the bearing housing, if necessary twisting to

overcome any tendency of the seal (A21) to stick

to drive rod (D37). Remove and discard failed

seal.

4. Smear new actuator neck seal (A21) with soft

soa to assist fitting, osition in inner um body

(A19) and ush both com onents over drive rod

(D37) using assembly tool (Part No. 0015102000)

smeared with soft soa . Check that washers

(A23) are in lace, and fit and fully tighten screws

(A22). The heads of these screws should be fully

contained within the recesses in the inner um

body.

5. Reassemble remaining com onents in

accordance with Section 5.1.3 Actuator Seal (A18)

Instructions 6 to 10, inclusively.

5.1.5 Drive Rod Seal Assembly and Bearing

(A25 and A28)

If oil leaks from orts in housing (A24) it is robable

that seal assembly (A25) is excessively worn. Such a

condition may also indicate that drive rod bush (A28)

should be re laced.

To ins ect and service, roceed as follows:

1. Drain oil from bearing housing by removing filler

ca (D08) and drain lug (D13).

2. Remove air um com onents in accordance with

Section 5.1.3 Actuator Seal (A18) Instructions 1

and 2, and to Section 5.1.4 Actuator Neck Seal

(A21) Instructions 2 and 3.

3. Being careful not to damage the flat sealing faces

of housing (A24), carefully withdraw housing

com lete with its bearing and sealing com onents

from bearing housing (D06) and drive rod (D37).

4. Examine condition of li and distributor seals

together with bearing. If either are worn or

damaged, we recommend that a new housing

(Part No. 0010905000) com lete with seal

assembly and bearing (A28) should be ordered

and fitted. However, individual com onents can

be renewed in accordance with the following

instructions.

5. To re lace drive rod bearing (A28) carefully

remove circli (A26) allowing seal com onents to

be ushed from housing with blunt unch or drift

from bearing end. The drive rod bearing can now

be removed using bearing drift (Part No.

0015168000) and the new com onent ressed

into osition so that one face is flush with the end

of the housing.

Selwood Seltorque S150 Manual

6. Ensure that seal com onents are assembled in

accordance with the following instructions.

a) The wi er seal (A34) is first assembled to the

drive rod seal carrier (A32) using wi er seal

insertion tool (Part No. 0010103000) ensuring

the correct orientation.

b) Then the internal distributor seal (A33) is

offered u to the bearing and seal housing

(A24) ensuring again the correct orientation

and ushed into lace with the drive rod seal

carrier (Part No 0015195000) together with

wi er seal (A34)) and the whole ressed into

lace with the wi er seal insertion tool (Part

No. 0010103000). Care must be exercised

when re lacing circli (A26) to ensure that the

li of the wi er seal (A34) is not damaged by

the hand tools used. Refer to Section 6.4.

7. Before re lacing bearing/seal housing assembly,

check condition of drive rod, articularly if new

bush (A28) has been fitted. If surface is

significantly worn, the drive rod should be

re laced in accordance with instructions given in

Section 5.4 Maintenance of Flushing Chamber, Air

Pum Mechanism, Drive Cou ling, Drive Shaft

Bearings and Li Seal. S ecifically Section 5.4.2.

8. Assembly tool (Part No. 0015101000) must be

used when re lacing bearing/ seal housing

assembly to ensure that the wi ing edges of the

seal assembly (A25) are not damaged. The drive

rod must be smeared with clean oil to assist this

rocedure. See Section 6.5. Gasket (A27) must

be renewed. Always use a com onent su lied

by Selwood Ltd. Ensure that orts in housing

(A24) are in the 3 and 9 o'clock ositions.

9. Reassemble remaining um com onents in

accordance with Section 5.1.4 Actuator Neck Seal

(A21) Instruction 4 and 5.1.3 Actuator Seal (A18)

Instructions 6 to 10, inclusively.

10. Re lace drain lug (D13) together with sealing

washer (D14) and refill bearing housing (D06) with

clean oil to level of lug (D08) and re lace lug

together with ‘O’ ring (D07). Refer to Section 3.1

Pum Lubrication for details of the oil required for

the Bearing Housing.

5.2 Separator Maintenance

5.2.1 Float (B11)

If water in significant quantities continuously asses

through the exhaust valve (A07) of the air um , it is

robable that the float (B11) is in need of re lacement.

To ins ect and service, roceed as follows:

1. Disconnect air hose (A01) by loosening hose cli

(A02), and twin rime (A40) by loosening hose cli

(A02).

2. Remove nuts (A11) and washers (A12) and lift off

se arator ca (B01) com lete with eel

valve/u er diffuser assembly (B01) to (B21),

inclusively.

3. Examine condition of float (B11) and re lace with

new com onent if unctured or significantly worn.

4. Check condition of eel valve rubber (B21) and

bush (B07) re lacing them, if necessary, in

accordance with Section 5.2.2 Peel Valve (B21).

Also check for de osits of solids likely to interfere

with the smooth working of the float system.

5. When fitting a new float, ensure that it is securely

tightened against nut (B12). During this rocedure

the float should be ositioned on the rod so that

the o erating late (B15) with its associated eel

valve fasteners is just clear of the central clam

bar screws (B16), when the float is located in the

u er diffuser cone.

6. If all com onents are seen to be in satisfactory

condition, re lace se arator ca assembly,

washers (A12) and nuts (A11). Alternately tighten

each nut a small amount to ensure that the ca is

ulled down evenly. Do not over tighten. Re lace

air hose(s) and re-tension hose cli (A02).

5.2.2 Peel Valve (B21)

If significant quantities of water are discharged from

the exhaust valve (A07) of the air um , and the float

(B11) is in satisfactory condition, it is robable that a

fault exists in the eel valve assembly.

To ins ect and service, roceed as follows:

1. Remove se arator ca sub-assembly (B01) to

(B21) and unscrew float (B11) and nut (B12).

2. Release screws (B09) and s ring washers (B10)

to allow u er diffuser/valve assembly to be

withdrawn.

3. Remove screws (B04) and sealing washers (B05)

to allow u er diffuser (B06) to be removed from

the ort late sub-assembly.

4. Examine condition of eel valve rubber (B21) and

air orts In late (B03) which it should com letely

cover when the float is fully raised. If the rubber

does not seat correctly, is distorted, or in any way

damaged, it must be removed and discarded by

releasing screws (B16).

5. To fit new eel valve rubber (B21):

a) Carefully clean existing arts thoroughly,

es ecially surfaces of ort late (B03), and

clam bars (B19) and osition new rubber on

late.

b) Assemble screws (B16), clam bar (B19),

clam bar seal (B20), washer (B18) and nuts

(B17) in sequence shown on drawing.

Alternately tighten each nut a small amount to

ensure that even clam ing ressure is

roduced. Correctly tightened nuts will not

cause the clam bar to distort the rubber.

6. Carefully attach the ends of the valve rubber (B21)

to the o erating late (B15), noting that the

com onents and method of assembly are identical

to those described in Instruction 5 of this Section

exce t that clam bar seal (B20) is omitted.

Again, ensure that the nuts are not over tightened.

Selwood Seltorque S150 Manual

7. After com leting Instructions 5 and 6 of this

Section, check that the eel valve rubber is

ca able of closing all of the air holes in ort late

(B03) when o erating rod (B13) is square to the

late and fully lifted.

8. Check condition of bush (B07) in u er diffuser

B06) and re lace, together with cli (B08) and

nitrile washer (B37), if significantly worn.

NOTE: The o erating rod (B13) is normally a slack fit

in the bush.

9. Position ort late sub-assembly on u er diffuser

(B06), fit washers (B05) after checking that they

will seal efficiently and fully tighten screws (B04).

Reassemble nut (B12) and screw float (B11) on to

o erating rod and tighten securely in accordance

with Section 5.2.1 Float (B11) Instruction 5.

10. Recheck o eration of eel valve rubber (B21) to

ensure that it fully covers air orts in late (B03)

when the float is located in the u er diffuser

cone. In this osition there should be a ga of

3.5 mm between the heads of the centre clam

bar screws (B16) and the o erating late (B15). If

the dimension is incorrect, adjust osition of float

on o erating rod.

11. Examine condition of gasket (B02) and renew, if

necessary, before installing between ort late

(B03) and se arator ca (B01). Fit s ring

washers (A12) and screws (A11) each of which

should be sequentially turned a small amount until

fully tightened. Gasket (B02) must be evenly

com ressed.

12. Re lace se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instruction 6.

5.2.3 Deposits o Solids†‡

When handling liquids containing solids ca able of

adhering to roduct wetted surfaces, it is advisable

eriodically to check the valve system in the se arator.

To ins ect and service, roceed as follows:

1. Remove se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instructions 1 and 2, allowing se arator body

(B22) together with lower diffuser (B24), to be

lifted off the suction tube (B27).

2. Remove any de osits of scale from lower diffuser

(B24) and check condition of welds securing its

circular bottom to the erforated cylinder.

Remove any solids that may have accumulated in

the suction tube (B27), renew gasket (B25) and

re osition se arator body/lower diffuser assembly

on suction tube.

3. Remove de osited materials from surfaces of

u er diffuser (B06) and note, in articular,

condition of welds securing cone and disc to

erforated diffuser body. Also examine diffuser

† Use lower Diffuser (Part No. 00-15-038100) for sludge

handling duties. This is recognised by holes in the base as

well as around the side.

‡ Use lower Diffuser (Part No. 00-15-038000) for other

a lications where no solids are resent which can adhere to

the internal surfaces.

bush (B07) and o erating rod (B13), and re lace if

significantly worn in accordance with Section 5.2.2

Peel Valve (B21) Instructions 3 to 11. Remove all

de osited solids that would interfere with the free

movement of the mechanism, obstruct the

assage of air across the ort late holes, or

inhibit the flow of water (through the holes in the

u er diffuser, for exam le).

4. Once it is established that all com onents are in a

satisfactory condition and are free from scale,

re lace se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instruction 6. Any re-assembly work carried out

on the eel valve assembly should be in

accordance with Section 5.2.2 Peel Valve (B21)

commencing Instruction 1.

The fabricated se arator chamber (B35) (Part No.

0015105100 is normally utilized when the um is

fitted with Twin Prime where the larger volume allows

better se aration of air from the um ed liquid.

The two to fixings attaching the se arator chamber

(B35) to the um body (C09) are located inside the

chamber necessitating (B36) M12 dome nuts and

s acer washers to rotect the stud threads.

5.3 Impeller, Mechanical Seal and

Delivery Valve Maintenance

5.3.1 Impeller (C04)

Generally s eaking, it is only necessary to remove the

im eller if the existing com onent has become

severely abraded, or if access to other rotating arts is

required.

To remove and re lace, roceed as follows:

1. Remove air hose item (A01), twin rime item

(A39) and (A40) from se arator ca (B01), after

loosening relevant hose cli (A02).

2. Remove nuts (A11) and washers (A12), and lift off

se arator ca (B01) com lete with eel

valve/u er diffuser assembly, (B01) to (B21)

inclusively.

3. Lift se arator body (B22) com lete with lower

diffuser (B24) off suction tube (B27) or (B35)

allowing (dome) nuts (B36) or (B29) and s ring

washers (B39) or (B30) to be released.

4. Withdraw suction tube (B27) or (B35) and gasket

(B28) after removing nuts (B29) and associated

s ring washers (B30).

5. Drain oil from flushing chamber by removing filler

ca assembly (D08) and drain lug (D34). The

condition of the oil will indicate whether or not the

mechanical seal has been functioning correctly. If

contamination is evident, the mechanical seal

must be re laced in accordance with Section 5.3.2

Mechanical Seal (C08).

6. Remove im eller screw (C01) and washers (C02)

and (C03), and withdraw im eller (C04) from drive

shaft (D17). To remove the screw, it will be

necessary to lock the im eller by means of a

wooden block wedged between the im eller

blades and um body (C09).

Selwood Seltorque S150 Manual

NOTE: An im eller removal tool (Part No.

0015WRS781) is available to facilitate removal of the

im eller, refer to Section 6.10 Remove Im eller.

Removal of the im eller will allow the mechanical seal

s ring to ex and. Do not touch the shaft sleeve (C06)

or s ring if the mechanical seal has been functioning

correctly and only the im eller is to be re laced.

Premature failure of the mechanical seal assembly

could result if the seal's faces are disturbed by moving

the shaft sleeve.

7. When fitting a new im eller, ensure that key (C05)

is not a tight fit in the im eller keyway. If

necessary, remove very small amounts of metal

from the sides of the key to achieve a close sliding

fit that will not allow any erce tible rotation of the

im eller on the shaft, and yet allow the im eller to

slide into lace by hand. A ly Rustilo 431 grease

(or a roved equivalent) to all im eller mounting

surfaces.

8. Check condition of nylon atch on im eller screw

(C01). It is essential that this screw should be stiff

to turn in the thread of the shaft. On no account

use a screw that moves freely. Use a new screw

if the head of the original com onent is abraded or

if the screw is not a friction fit in the shaft thread.

Do NOT lubricate these threads.

9. Ensuring that the mechanical seal s ring is in

osition, re lace im eller (C04), washer (C03) two

washers (C02) with concave faces towards

im eller and im eller screw (C01), and tension

screw to 80lbf ft (11kgf m) torque. It is essential

that this screw is correctly tensioned. During this

o eration, it will be necessary to lock the im eller

by means of a wooden block wedged between the

im eller blades and um body (C09). Remove

block after use.

10. Use Rustilo 431 on inside of um register. Fit

new gasket (B28), osition suction tube on studs,

fit washers (B30) and (B39) and fully tighten nuts

(B29) and (B36). Grease should be smeared on

the inside of the dome nuts (B36), which must be

correctly ositioned on studs inside suction tube.

11. Renew gasket (B25), re osition se arator body

sub-assembly on suction tube, and fit se arator

ca assembly. Assemble washers (A12) and nuts

(A11) and alternatively tighten each nut a small

amount to ensure that the ca is ulled down

evenly. Do NOT overtighten.

12. Re osition air hose (A01) on s igot of se arator

ca (B01) and tighten hose cli (A02).

13. Re lace drain lug (D34) using PTFE ta e as a

sealant, and fill flushing chamber with new oil to

level of lug. Re lace lug and ‘O’ ring (D08) and

(D07). Refer to Section 3.1 Pum Lubrication for

details of the oil required for the flushing chamber.

5.3.2 Mechanical Seal (C08)

The mechanical seal should be re laced if the flushing

chamber oil continuously leaks into the um ed fluid,

or if the oil becomes contaminated with the roduct.

This latter condition is sometimes indicated by leakage

of fluid out of a breather ca (D12). Under extreme

conditions, um ed fluid may be seen esca ing out of

the vent at the bottom of flushing chamber (D33).

In the event of abrasive materials being detected in the

oil, it is likely that li seal (D04) will have become worn

and necessitate re lacement in accordance with

Section 5.4.3 Bearings and Li Seal (D15, D18 and

D04).

Daily checks on oil condition should ensure that seal

failure is detected before damage occurs to related

com onents.

If the mechanical seal leaks, roceed as follows:

1. Drain oil from flushing chamber (D33) by removing

its filler ca (D08) and drain lug (D34).

2. Remove im eller (C04) in accordance with

Section 5.3.1 Im eller (C04) Instructions 1 to 6

inclusively, and remove im eller key (C05).

3. Withdraw shaft sleeve (C06) together with rotating

mechanical seal arts and s ring. It is likely that

‘O’ ring (C07) will be withdrawn with the sleeve

remove it and check condition. Re lace ‘O’ ring if

unsuitable for further service.

4. Using seat removal tool (Part No. 0015166000),

withdraw mechanical seal stationary seat from its

housing in um body (C09). Also remove the

seat's rubber joint ring. Refer to Section 6.3

Removal of Mechanical Seal Stationary Seat and

Joint Ring.

5. The rotating arts of mechanical seal (C08) should

now be removed from the shaft sleeve and

discarded, taking care not to damage the sleeve's

surfaces. This o eration should be carried out by

hand using a tool that will not scratch the sleeve.

Once removed, examine condition of sleeve and

re lace with new com onent if unacce tably

corroded or worn.

IMPORTANT ADVICE

New mechanical seal com onents must

be handled with great care, in

articular, the seal faces must not be

touched by hand and must only come

into contact with clean soft a er that is

free from abrasive materials.

Premature seal failure is likely to occur

if this advice is not heeded.

6. Thoroughly clean recess in um body (C09) and

also the surrounding surfaces. Smear lubricant

(soft soa or washing u liquid, but not grease) in

recess and also on outside diameter of rubber

joint ring. Using several layers of clean soft a er

to rotect the seating face, ress seat into recess

by a lying even finger ressure. Make sure that

the highly olished sealing face is on the im eller

side of the recess, that the new joint ring has been

used, and that the seat is ositioned directly

against the shoulder at the bottom of the recess.

7. Smear oil on drive shaft diameters and ‘O’ ring

(C07). Position ‘O’ ring on shaft taking care to

revent it contacting the shaft's keyway. If a new

shaft sleeve (C06) is being used, ensure that it is

ca able of sliding freely along the shaft and

correctly tra ing the ‘O’ ring in the recess

rovided.

Selwood Seltorque S150 Manual

8. Smear soft soa on outside diameter of shaft

sleeve (C06) and inside diameter of rubber drive

band. Protect the highly olished face of the seal

with several layers of clean soft a er, and slide

seal assembly onto sleeve using finger ressure

only - USE NO TOOLS. The seal must be

ositioned so that the carbon face is about 3mm

ast the non-flanged end of the sleeve.

9. Within a few minutes, to ensure that the lubricant

has not set, slide sleeve seal assembly onto shaft

(seal face towards stationary seat) and ress into

working osition using only the sleeve's flange.

This rocedure automatically causes the seal

head to slide along the sleeve into its correct

working osition. Ensure that ‘O’ ring (C07) is

correctly tra ed in sleeve recess (C06) and that

sleeve abuts against shoulder on shaft.

10. Push mechanical seal s ring onto location

diameter rovided on seal head. Ensure that the

s ring's coils are correctly su orted by the flange

of sleeve (C06) and will not become tra ed

between the flange and the im eller (C04) Refit

key (C05) and im eller in accordance with Section

5.3.1 Im eller (C04) Instructions 7 and 9,

inclusively.

11. Re lace remaining com onents in accordance

with Section 5.3.1 Im eller (C04) Instructions 10

and 13, inclusively.

5.3.3 Delivery Valve (C27)

Failure of the um set to um under suction lift

conditions could be due to a fault in the delivery valve

assembly.

To ins ect and service, roceed as follows:

1. Ensure that um has been shutdown and the

delivery line has been drained.

2. Release T-bolt (C19), swing locking bar (C22)

clear, and remove ins ection anel (C24) and

gasket (C25). It now becomes ossible to lift the

valve by hand to ex ose the valve seat (C16) so

allowing foreign matter to be removed. Also

undertake a reliminary check of the condition of

the valve rubber.

3. If further disassembly is required, remove screws

(C29) and washers (A13), allowing clam ing bar

(C28) and delivery valve (C27) com lete with

valve lates (C26) and (C30) to be removed.

4. Se arate u er and lower valve lates (C26) and

(C30) by removing nut (C31), and examine

condition of rubber (C27), es ecially along the

hinge line and seating surface. Discard if

damaged or missha en.

5. To re lace valve seat (C16), remove valve

chamber (C18) after releasing nuts (B31) and

s ring washers (C15).

6. Reassemble com onents in reverse order,

renewing gaskets (C17) and (C25) if necessary.

Ensure that radiused edge of clam ing bar (C28)

is adjacent to hinge line of valve rubber (C27) and

that each screw is tightened a small amount so as

to roduce an even clam ing ressure. Correctly

tightened screws will not cause the clam bar to

distort the rubber. Seal screws with Loctite 572.

5.4 Maintenance o Flushing

Chamber, Air Pump

Mechanism, Drive Coupling,

Drive Sha t Bearings and Lip

Seal

5.4.1 Flushing Chamber (D33)

Leakage of oil through the vent at the bottom of

flushing chamber (D33) could be due to failure of either

of the li seals (D04). If the um ed liquid also leaks

through the vent, the mechanical seal (C08) will

require to be re laced in addition to its adjacent li seal

(D04). In any of these events, roceed as follows:

1. Drain oil from flushing chamber and bearing

housing by removing filler ca s (D08) and drain

lugs (D13) and (D34).

2. Remove se arator assembly and suction tube

(B27) or (B35) in accordance with Section 5.3.1

Im eller (C04) Instructions 1 and 4, inclusively.

3. Remove im eller screws (C01) and washers (C02)

and (C03), and withdraw im eller (C04)

mechanical seal s ring, and shaft sleeve (C06)

com lete with mechanical seal arts (C08).

Handle the sleeve and mechanical seal with great

care and store in safe lace, articularly if these

arts are to be reused.

4. Remove s lit guard fitted around flexible cou ling,

and release all of the cou ling's fasteners allowing

the rubber tyre to be removed.

5. Attach lifting equi ment to bearing housing and

um body in com liance with requirements of

Health and Safety at Work Act, 1975.

6. Remove nuts, bolts and washers securing um

to chassis and hoist clear, carefully noting the

ositions of any shims between um feet and

chassis.

7. Lower unit onto working surface and, in

com liance with Health and Safety at Work Act,

1975, ti um onto ends of studs (C10) ensuring

that they are suitably rotected from damage.

8. Remove nuts (A11) and s ring washers (A12) and

carefully se arate bearing housing and flushing

chamber assembly from um body (C09).

During this o eration, be very careful not to

damage the mechanical seal stationary seat by

allowing it to contact the shaft.

9. It now becomes ossible to remove flushing

chamber (D33) from bearing housing (D06), after

releasing screws (D31) and s ring washers (A06).

10. To re lace li seals (D04):

a) Press failed com onents out of housings and

discard.

Selwood Seltorque S150 Manual

b) Thoroughly clean all surfaces of flushing

chamber (D33) and ress new seals into

osition, ensuring that they face in the correct

directions: The garter s ring fitted to the li of

the seal nearest the bearing housing, should

be visible from the bearing housing side of the

flushing chamber. The garter s ring fitted to

the li of the seal nearest the im eller, should

be visible from the im eller side of the

flushing chamber. Refer to Section 6.8.5

Assemble Flushing Chamber for dis osition of

seals.

11. Re lacement of the flushing chamber sub-

assembly in the bearing housing must be

undertaken very carefully to ensure that the li s of

seals (D04) are not damaged by the shoulders on

the drive shaft (D17). Use assembly tool (Part No.

0015165100) for this ur ose. A generous

quantity of oil should be a lied to the shaft to

assist this o eration, and a new gasket (C13)

should be fitted. Re lace and tighten screws

(D31) and s ring washers (A06).

12. Position new gasket (C13) on studs (C14) and fit

bearing housing assembly to um body, taking

great care to ensure that the shaft does not touch

the mechanical seal stationary seat. Re lace and

tighten nuts (A11) and s ring washers (A12).

13. Using lifting equi ment in com liance with the

Health and Safety at Work Act, 1975, osition

um unit on chassis being careful to re lace any

shims in their original ositions. Re lace nuts,

bolts and washers and assemble, but do not

tighten nuts.

14. Refer to Section 1.5 when refitting the um to a

diesel engine. Refer to Section 1.7 when refitting

the um to an electric motor.

15. Re lace s lit guards around flexible cou ling and

ensure that it is securely fastened, with nuts bolts

and washers. Also fasten to flywheel guard where

a licable with bolts and washers.

16. Read Instructions 19 to 21 of this Section and

Section 5.4.2 Air Pum Mechanism Instructions 1

to 3, and:

a) Carefully remove any foreign matter from the

sleeve and mechanical seal com onents.

Smear clean engine oil on both the ‘O’ ring

(C07) and the drive shaft diameters.

b) Position the ‘O’ ring on the shaft taking care

to revent it contacting the drive shaft's

keyway, and slide the sleeve/seal assembly

onto shaft (carbon face towards stationary

seat) and ress into working osition using

only the sleeve's flange.

c) Ensure that ‘O’ ring is correctly tra ed in

sleeve recess.

17. Re lace im eller, suction tube and se arator

com onents in accordance with Section 5.3.1

Im eller (C04) Instructions 7 to 12, inclusively.

18. Re lace bearing/seal housing assembly and

actuator neck seal in accordance with Section

5.1.5 Drive Rod Seal Assembly and Bearing (A25

and A28) Instruction 8 and Section 5.1.4 Actuator

Neck Seal (A21) Instruction 4.

19. Re lace remaining air um com onents in

accordance with Section 5.1.3 Actuator Seal (A18)

Instructions 6 and 10, inclusively.

20. Re lace drain lug (D34) using PTFE ta e as

sealant, and fill flushing chamber with new oil to

level of lug hole. Re lace lug (D08) with ‘O’

ring (D07). Refer to Section 3.1 Pum Lubrication

for details of the oil required for the flushing

chamber.

21. Re eat this rocedure for bearing housing

ensuring that level lug (D08) with ‘O’ ring (D07)

are re laced after the correct oil level is attained.

5.4.2 Air Pump Mechanism

Should actuator (A20) fail to reci rocate when the

um is running, or if other abnormal conditions are

sus ected, the air um mechanism should be

immediately ins ected to minimise the risk of

consequential damage.

Proceed as follows:

1. Drain oil from bearing housing and flushing

chamber by removing filler ca s (D08) with ‘O’ ring

(D07) and drain lugs (D13) with sealing washer

(D14) and (D34).

2. Remove air um com onents in accordance with

Section 5.1.3 Actuator Seal (A18) and Section

5.1.4 Actuator Neck Seal (A21) Instructions 2 and

3 (discard actuator neck seal if it has failed).

3. Being careful not to damage the flat sealing faces

of housing (A24) carefully withdraw housing

com lete with bearing and sealing com onents

from bearing housing (D06) and drive rod (D37).

4. Carry out Section 5.3.1 Im eller (C04) Instructions

2 to 4, inclusively.

5. Carry out Section 5.4.1 Flushing Chamber (D33)

Instructions 2 to 9, inclusively.

6. Release nut (D38) and withdraw screw (D27),

allowing fulcrum in (D28) to be removed. Drive

rod (D37) and connecting rod (D26) may then be

withdrawn. If second riming um is fitted,

re eat these o erations, ensuring that the

connecting rod, fulcrum in and drive rod

com onents are ke t as sets, and can later be

reassembled in their original ositions.

7. Remove circli (D24). Eccentric (D23) can now

be removed by inserting M10 bolt in ta ed hole

rovided and ta ing to loosen in an anti-

clockwise direction (eccentric has a right hand

thread). See Section 6.9 Remove Eccentric.

8. Examine condition of all com onents and renew

failed or significantly worn items. A re lacement

connecting rod, com lete with bushes, should be

ordered against sub-assembly (Part No.

0015908000).

9. To rebuild mechanism, ensure thread and abutting

shoulder is thoroughly clean and sim ly screw on

the eccentric, making sure it abuts against the

shaft (D17) shoulder. Refit circli (D24).

10. Position connecting rod(s) (D26) on eccentric,

thoroughly degrease ta ing in drive rod(s) (D37)

and assemble drive rod(s) and fulcrum in (D28)

in connecting rod(s).

Selwood Seltorque S150 Manual

11. Assemble lock nut(s) (D38) to new screw (D27)

locating groove in fulcrum in (D28). Do NOT re-

use old com onent. Fully tighten unit against

recess in drive rod(s) (D37) to 2.9kgf m (21lb. ft)

torque.

12. Re lace flushing chamber and um on chassis in

accordance with Section 5.4.1 Flushing Chamber

(D33) Instructions 11 to 15, inclusively.

NOTE: It will be necessary to start at instruction

Section 5.4.1 Flushing Chamber (D33) Instruction 10 if

li seals (D04) have to be re laced.

13. Read Section 5.3.2 Mechanical Seal (C08)

Instruction 8 and carefully remove any foreign

matter from the sleeve and mechanical seal

com onents. Smear clean oil on both the ‘O’ ring

(C07) and the drive shaft diameters. Position the

‘O’ ring on the shaft taking care to revent it

contacting the drive shaft's keyway, and slide the

sleeve/seal assembly onto shaft (carbon face

towards stationary seat) and ress into working

osition using only the sleeve's flange. Ensure

that ‘O’ ring is correctly tra ed in sleeve recess.

14. Re lace im eller, suction tube and se arator

com onents in accordance with Section 5.3.1

Im eller (C04) Instructions 7 to 12, inclusively.

15. Re lace bearing/seal housing assembly and

actuator neck seal in accordance with Section

5.1.5 Drive Rod Seal Assembly and Bearing (A25

and A28) Instruction 8 and Section 5.1.4 Actuator

Neck Seal (A21) Instruction 4.

16. Re lace remaining air um com onents in

accordance with Section 5.1.3 Actuator Seal (A18)

Instructions 6 to 10, inclusively.

17. Re lace drain lug (D34) using PTFE ta e as

sealant and fill flushing chamber with new oil to

level of lug (D08). Re lace lug and ‘O’ ring

(D07). Refer to Section 3.1 Pum Lubrication for

details of the oil required for the flushing chamber.

18. Re eat this rocedure for bearing housing

ensuring that level lug (D08) and ‘O’ ring (D07)

are re laced after the correct oil level is attained.

5.4.3 Bearings and Lip Seal (D15, D18 and

D04)

In the unlikely event of a bearing failure, or if the

bearing housing oil esca es from the engine end of the

bearing housing by assing across li seal (D04) it

becomes necessary to undertake work on the drive

shaft assembly.

1. To re lace li seal (D04) only roceed as follows:

a) Remove oil from bearing housing by removing

the filler ca (D08) and drain lug (D13).

b) Remove li seal carrier (D03) li seal (D04)

and ‘O’ ring (D05) by removing ca screws

(D01) and washers (A06).

c) Prise out the old li seal and ress in a new

seal. When fitting lightly lubricate the li s of

the seal and if damaged re lace ‘O’ ring

(D05).

d) Refit the com onents taking care not to

damage the seal on the shar edges of the

keyway.

e) Re lace drain lug (D13) and sealing washer

(D14) in bearing housing (D06). Fill with oil to

correct level and re lace level lug (D08) and

oil ‘O’ ring (D07).

2. For bearing re lacement roceed as follows:

a) Carry out Section 5.4.2 Air Pum Mechanism

Instructions 1 to 8, inclusively.

b) Remove li seal carrier (D03) li seal (D04)

and ‘O’ ring (D05) by removing ca screws

(D01) and washers (A06). If li seal (D04) is

to be utilized again ensure seal is not dragged

over shar edge of keyway.

c) Moving to the im eller end of the bearing

housing (D06), remove bearing carrier (D20)

by removing setscrews (D22) and washers

(A13). The bearing carrier (D20) can be

jacked free by the two screwed holes

adjacent to the fixings.

d) Remove drive shaft (D17) com lete with

bearings (D18) and (D15) from bearing

housing (D06) by a lying ressure

( referably with a fly- ress) to the rotected

cou ling end of the drive shaft.

e) Press bearings (D15) and (D18) from shaft

(D17) and discard. Thoroughly clean all

bearing housing surfaces and ins ect shaft

(D17) for damage.

f) To fit new bearings, thoroughly clean all drive

shaft surfaces and smear oil on bearing

mounting diameters. Press new bearings

onto shaft using worksho tools and method

described under Section 6.11 Fit

Re lacement Drive End Bearing and to

Section 6.12 Fit Re lacement Im eller End

Bearing, taking care to ensure that:

i) The bearings are ke t in their as received

condition and do not come into contact

with foreign matter;

ii) Pressure during fitting is a lied directly

to the inner rings of the bearings and not

to the outer rings;

iii) The bearings are square to the shaft

throughout the fitting rocedure; and

iv) When fitted, the bearings register against

the shaft shoulders.

NOTE: Use of the worksho tools will ensure the

above criteria is fulfilled.

g) Before re lacing the drive shaft sub-assembly

into the bearing housing, make sure that the

bores that receive the bearings are clean and

smeared with clean oil. Care must be

exercised when assing the drive shaft with

bearings into the bearing housing to ensure it

is concentric and arallel to the mating

surfaces. This is described at Section 6.13

Assembly of Drive Shaft with Bearings into

Housing.

Selwood Seltorque S150 Manual

h) The sub-assembly should be ressed into

osition by 'jacking' home the bearing carrier

(D20) by means of the setscrews (D22). Do

NOT a ly shock loads such as hammer

blows.

NOTE: 'Jack' home evenly. Protect surface of bearing

carrier (D20) with lain washers under setscrews (D22)

finally remove setscrews (D22) and fit new washers

(A13).

i) The remaining com onents may now be

reassembled in accordance with Section 5.4.2

Air Pum Mechanism Instructions 9 to 18,

inclusively.

5.5 Chassis Maintenance

It is ossible to work on individual com onents of the

chassis without removing either the engine or the

um unit. In all cases work should be undertaken on

level ground and care should be exercised to ensure

that the um set is fully immobilised. If the chassis is

to be com letely dismantled, both the engine and

um unit should be removed in com liance with the

requirements of Health and Safety at Work Act, 1975.

1. To remove the fuel tank:

a) Drain the fuel by removing the drain lug and

washer.

b) Disconnect the fuel feed and return lines.

c) Place suitable su orts beneath the tank and

remove the four nuts bolts and washers, the

access to the nuts and washers being inside

the main chassis members. The tank can

then be slid from beneath the chassis,.

2. To clean the fuel feed filter:

a) Remove the three set bolts and washers.

b) Lift the filter from the tank, taking care not to

lose the gasket.

NOTE: The filter can be removed for cleaning without

removing the tank from the chassis.

3. To remove the front axle:

a) Su ort the chassis beneath either the fuel

tank ensuring that the weight is taken on a

suitable iece of wood extending the full width

of the tank, or underneath the main chassis

members.

b) Remove the s lit ins and washers retaining

the wheels and slide the wheels from the

axle.

c) Remove the s lit in and washer. From one

side only of the draw bar ivot in, slide the

in free of the ivot and draw bar thus

allowing the draw bar to come away from the

assembly.

d) Remove the s lit in and washer from one

end of axle ivot in and slide the in clear of

the ivot and axle thus freeing the axle.

4. The front axle ivot locking system is designed as

a backu to the single bolt fixing. To remove

ivot:

a) Bend back lock washer and release the set

bolt lock washer and ivot to ca .

b) Dro the ivot clear of the chassis member.

NOTE: If the engine is in lace on the chassis the

access to the set bolt is from beneath the engine

between the chassis members.

c) Extract and re lace s ring roll in if damaged,

from to of ivot.

5. To remove the rear axle:

a) Su ort the chassis and remove the wheels

as described in Instruction 3 of this Section.

b) Release the four horizontally dis osed nuts,

bolts, and s ring washers and the two vertical

nuts, bolts, s ring and ta er washers.

6. To remove the lifting eye remove the four set bolts

and s ring washers.

7. Reassembly is a reverse of the above, ensuring

that the wheel hubs, axles, ivot, ivot turntable,

axle ivot in and drawbar in are thoroughly

cleaned and liberally greased. Renew the fuel

feed filter gasket if necessary.

NOTE: When lacing ivot to ca on to of ivot,

ensure the to ca locates correctly over the s ring roll

in in to of ivot shaft. Also when lacing the lock

washer with fixing bolt in lace over the ivot to ca ,

ensure small tab locates in second hole of the ivot to

ca - the first hole locating the s ring roll in. Always

use new lock washer. Finally bending u in one lace

to lock against the flat of the setbolt hexagon.

5.6 Supersilent Canopy - Canopy

Removal

To remove the cano y roceed as follows:

1. Disconnect the battery ositive and negative and

remove the battery assembly.

2. Disconnect exhaust i ework within cano y

having first removed insulation blanket.

3. Disconnect emergency sto wiring lugs from sto

buttons from within cano y. Tie u onto engine to

revent damage to wiring.

4. Remove suction and discharge a erture cover

lates. Remove foam lugs and rubber blanking

gasket.

5. Remove discharge fitting and extension iece

from discharge flange of um .

6. In each corner of the skid, working u through the

u er flange of the skid base are four M16

screws. Remove these in turn to release the

cano y from the corners of the skid base.

7. With the corners released undo the M24 nyloc

nuts from the centre lifting studs. The studs are

locked internally and will not turn beyond a few

degrees of movement. When these are both

released the cano y is ready to be lifted clear.

Selwood Seltorque S150 Manual

8 In order to revent damage to the engine radiator

and to ensure a clean lift is achieved a air of M12

eye bolts will be required to be fitted to the roof

section on the radiator end of the cano y. The

mounting ositions are blanked off with normal

hex head screws at resent, remove these and

re lace with eye bolts.

9. Use a set of three or four leg chains. Attach two

to the centre lifting eye and snag the other two to

shorten them so that they ick u the radiator end

of the cano y square. Lift the cano y u and

away from the unit, lace down on timber runners

to rotect the lower edge.

5.7 Supersilent Canopy -Fuel Tank

Removal

To remove the fuel tank roceed as follows:

1. With the cano y removed it will now be necessary

to remove the um and engine from the tank

structure. Begin by removing the cou ling guards

from the engine bell housing.

2. Disconnect the air um silencer hose from the

discharge elbow of the air um . Remove the

clam s holding silencer body. Remove the air

um silencer assembly com lete.

3. Slacken and remove the four M16 fixings holding

the um body. Attach a suitable lifting device to

the um and manually draw the um backwards

off the cou ling ins. When the ins are clear of

the rubber element lift the um unit clear of the

chassis.

4. To remove the engine the following arts will need

to be removed from the tank/skid structure and

where necessary tied back to the engine to

revent damage. Disconnect and drain fuel lines.

Undo and remove control anel from bracket.

Working beneath the engine end of the skid

slacken the bulkhead fitting lock nut on the oil

drain hose and remove the hose end from the skid

base. Tie the hose back to a suitable oint on the

engine.

5. The last fixings to be removed are engine mount

to AV mount securing screws. Slacken and

remove each in turn.

6. The engine is now ready to be removed from the

tank structure. Lift vertically u and away. Watch

for any danger of collision between engine and

tank. The engine will need to be laced in a

suitable frame to revent damage to the oil drain

or sum .

7. To remove the tank, slacken and remove four tank

to AV mount screws. With these removed use a

set of four chains to lift the tank unit from the skid

base using the four AV mount brackets.

5.8 Supersilent Canopy – Fuel

Tank Re itting

To refit the fuel tank roceed as follows:

1. Refit the tank as er removal taking note of the

fuel drain lug osition and its relationshi to the

access lug in the skid base. Orientate the tank

so that the drain is behind the larger lug.

2. Insert the four screws to secure the tank to the AV

mounts and check the alignment of the tank in the

skid base before tightening these screws. During

the tightening rocedure a twisting moment can be

a lied to the rubber element of the mount which

is undesirable. If this occurs, use or make a

suitable tool to counteract this twist and tighten to

150 Nm. Recheck alignment and ensure no

mounts are twisted. Correct if required.

3. Refit engine but do not fully tighten the mounting

to the AV mount screws at this stage, finger

tighten only. Reconnect all fuel lines, oil drain and

refit the control anel.

4. Before refitting the um unit slacken the grub

screw (hex socket set screw) in the um half

cou ling boss. Ensure that the hub and rubber

element are free to slide on the um shaft. This

will be used as a guide for checking the alignment

of the cou ling at a later stage. Leave the

cou ling hub loose on the shaft.

5. Lift the um end onto the chassis and ush the

unit onto the engine side cou ling drive ins. With

the cou ling halves engaged dro in the four

um mounting fasteners and tighten nuts, finger

tighten only.

6. The um should now be visually aligned and

tighten down to 150 Nm torque. Check that the

cou ling element and hub is free to move on the

shaft to confirm correct alignment. A ry bar can

be used, but it should not require any effort to

move the assembly.

7. Move the engine on its mountings to make

alignment adjustments. Any shimming to adjust

vertical height should be added under the engine

AV mounts.

8. When alignment is satisfactory gradually tighten

the four AV mount screws to 70 Nm, checking

element/hub movement on the shaft each time.

During this rocedure it is ossible for the AV

mount rubber to twist. To revent this use a

suitable tool to counteract the a lied torque on

the mount. This will maintain the mount in a

neutral condition.

9. When com lete, tighten the grubscrew in the

cou ling hub into osition on the um shaft. The

element should not be fitted against the flywheel

ada tor late but clearance should be resent to

revent end thrust transmission through the

cou ling element.

Selwood Seltorque S150 Manual

5.9 Supersilent Canopy – Canopy

Re itting

To refit the cano y roceed as follows:

1. Re-sling the cano y as for removal and lift into

osition. Take care not to damage the radiator

when ositioning. Lower onto skid base checking

for alignment of the lifting studs.

2. When down and before fitting any fixings check

that the radiator overflow i e is not tra ed by

the cano y bulkhead. Release if tra ed.

3. Refit cano y lifting stud nuts and four corner fixing

screws. Adjust alignment if necessary and tighten

corner screws then stud nuts.

4. Remove eye bolts from cano y roof and re lace

with fasteners to revent water ingress.

5. Refit the delivery extension and fittings and refit

the suction and discharge covers as the reverse of

removal.

6. Reconnect the exhaust extension and refit

insulating cover.

7. Refit the fuel lines and control anel.

8. Refit the air um exhaust silencer assembly.

9. Reconnect the emergency sto wiring and refit the

battery assembly and cou ling guards.

10. Fill with fuel and bleed the system as required.

Test run. Ins ect all fasteners after 50 hours of

running.

6 WORKSHOP TOOLS

Major Servicing will always be carried out more quickly

by the use of the following s ecial tools and rocedure.

More im ortantly, their use will hel to ensure that new

com onents are not damaged whilst being fitted.

The tools are sim le to em loy and have been

designed for use in combination with standard fitter's

tools. For some o erations, a sim le ress, and a

bench com lete with a vice will be desirable.

We earnestly advise all um users to urchase a

com lete set of tools.

6.1 Care o Servicing Tools

Always clean, oil and safely store tools after use.

Com lete sets of tools are available by quoting:

Part No. 0015948200 - Seltorque S150 Excluding

Im eller Removal Tool Part No. 0015WRS781

Com rising:

Drive End Bearing Assembly Tool 0015181100 1

Bearing Assembly Stud 0015172100 1

Eccentric Puller Block 0015170000 1

Im eller End Bearing Assy Tube 0015169200 1

Drive Rod Bearing Drift 0015168000 1

Mechanical Seal Seat Removal

Tool

0015166000 1

Flushing Chamber Li Seal Fitting

Tool

0015165100 1

Drive Rod Seal Tool 0010103000 1

Actuator Neck Seal Cone 0015102000 1

Drive Rod Installation Tool 0015101000 1

6.2 Fitting o Actuator Neck Seal

1. Lightly clam seal installation tool against end of

drive rod by means of ca screw, as shown.

2. Push seal into rear of inner um body recess

(Part No 0015014000).

3. Clean ex osed shaft and tool surfaces, and smear

with soft soa . Carefully slide the actuator neck

seal onto shaft until it abuts against the conical

shoulder.

6.3 Removal o Mechanical Seal

Stationary Seat and Joint Ring

1. Ensure oil is drained from flushing chamber.

Remove im eller and shaft sleeve, com lete with

rotating mechanical seal com onents.

2. Engage ti of removal tool on inside face of seat.

Remove seat by ulling evenly at several

eri heral oints.

3. Joint ring can then be colla sed and discarded.

4. To re lace, the mechanical seal stationary seat

and joint ring must be assembled together with the

outer face of the joint ring smeared with soft soa ,

offered u to the flushing chamber housing and

gently ressed home using a iece of wood.

IMPORTANT ADVICE

New Mechanical Seal Com onents

must be handled with great care. In

articular, the seal faces must not be

touched by hand and must only come

into contact with clean soft a er that is

free form abrasive materials.

Premature seal failure is likely to occur

if this advice is not heeded.

Selwood Seltorque S150 Manual

6.4 Removal o Drive Rod Seal

Assembly

1. Remove internal circli with suitable liers and

remove seal assembly by carefully ta ing with

blunt unch or drift from bush end.

2. Re lacement of all com onents may be aided by

smearing adjacent surfaces with soft soa .

3. Prior to sliding home the drive rod seal carrier

(Part No. 0015195000), wi er seal (Part No. 9140

035070) must irst be assembled together, using

insertion tool Part No. 0010103000. Carefully

a lied ressure from a hand ress or vice jaws

may be em loyed for this o eration.

IMPORTANT ADVICE

Parts must be assembled in correct

order and orientation.

4. Great care must be exercised when re lacing the

circli to ensure that the li of the wi er seal is not

damaged by the handtools used.

6.5 Fit Seal Housing Sub-

Assembly to Pump

1. Thoroughly clean ex osed drive rod surfaces and

osition installation tool as shown.

2. Smear tool and drive rod surfaces with oil.

3. Thoroughly lubricate drive rod bearing and drive

rod seal with oil and fit new gasket before ushing

seal housing assembly along drive rod until it

registers in bearing housing.

6.6 Remove Drive Rod Bearing

Bush

1. Insert shouldered end of drift into bush as shown

in u er sketch.

2. Su ort air um edestal evenly on face 'X'

leaving sufficient clearance for bush to emerge

freely.

3. Push out bearing bush by ressing or striking on

tool face 'Y'.

6.7 Fit New Drive Rod Bearing

Bush

1. Position seal housing on clean flat surface and

drawing.

2. Lightly oil bore and bush to revent ick u .

3. Insert shouldered end of drift into bush as shown

in lower sketch.

4. Insert bush by ressing or striking on tool face 'Y'

until end of bearing is flush with face 'X'.

Selwood Seltorque S150 Manual

6.8 Assemble Flushing Chamber

1. Check that circli has been fitted to eccentric, and

thoroughly clean ex osed shaft surfaces and

smear with oil.

2. Check that li seal fitting tool is internally and

externally clean, smear with oil and slide over end

of drive shaft as shown.

3. Check that flushing chamber li seals are correctly

orientated and generously lubricate their li s with

oil. Slide chamber along fitting tool and onto drive

shaft, taking great care to ensure that it remains

concentric to the shafts axis.

WARNING

Li seals must not be used to su ort

the flushing chamber.

4. Ensure that the li of the leading seal does not

become deformed.

6.9 Remove Eccentric

1. Check that circli adjacent to eccentric is

removed.

2. Insert M10 bolt lus washer into eccentric as

shown.

3. To release ta using drift in anticlockwise

direction, i.e. in direction of arrow 'B'.

NOTE: If removing eccentric when shaft is

disassembled from um , clam with soft jaws on

diameter 'Z'.

6.10 Remove Impeller

1. Pum should be removed from the chassis or the

engine decou led and the bearing housing

su orted.

2. Remove suction tube together with se arator

com onents ensuring that the gasket between

um body and suction tube is also removed.

3. Remove im eller screw and washers.

4. Remove nuts and washer (8off each) from the

studs rotruding from the um body through the

flushing chamber and bearing housing flange joint.

5. Offer u im eller removal tool across front face of

um body as shown ensuring the correct nose

ada ter is fitted. Affix by using existing nuts and

washers.

Selwood Seltorque S150 Manual

6. Turn screw handle so that the drive shaft

connected to the bearing housing is ushed

through and out of the um body leaving the

im eller free.

NOTE: When re assembling im eller ensure end of

shaft is coated with Shell ENSIS grease or a roved

equivalent.

6.11 Fit Replacement Drive End

Bearing

1. Remove old bearing taking care not to damage

the shaft in any way. Fit soft jaws to vice and

clam shaft horizontally on diameter 'Z' leaving the

abutment shoulder overhanging.

2. Screw assembly stud (Part No. 0015172100) into

shaft end until it bottoms. Thoroughly clean

bearing mounting surfaces of shaft and smear with

oil.

3. Carefully register bearing on shaft, ensuring that it

is NOT contaminated by foreign matter, and

osition assembly tool (Part No. 00151811000)

and uller block (Part No. 0015170000) as shown.

4. Ensuring that the bearing is square to the shaft

and that assembly tool is concentric to the shaft's

centre line, ush bearing onto shaft by a lying

steady and continuous screwing torque to the M16

nut and washer.

5. Check that inner ring of bearing is touching

abutment shoulder of drive shaft:

NOTE: Bearings may be re laced by using the

assembly tool in conjunction with a ress only, thus

eliminating stud and uller block.

6.12 Fit Replacement Impeller End

Bearing

1. Remove old bearing taking care not to damage

the shaft in any way. Fit soft jaws to vice and

clam shaft horizontally on diameter 'Z' leaving the

abutment shoulder overhanging.

2. Screw assembly stud (Part No. 0015172100) into

shaft end until it bottoms. Thoroughly clean

bearing mounting surfaces of shaft and smear with

oil.

3. Carefully register bearing on shaft ensuring that it

is not contaminated by oreign matter and

osition assembly tool (Part No. 0015169200) as

shown.

4. Ensuring that the bearing is square to the shaft

and that assembly tool is concentric to the shaft

centre line, ush bearing onto shaft by a lying

steady and continuous screwing torque to the M16

nut and washer.

5. Check that inner ring of bearing is touching

abutment shoulder of drive shaft.

6. Re lace the bearing s acer and circli .

NOTE: Bearings may be re laced by using the

assembly tools in conjunction with a ress only, thus

eliminating stud and uller block.

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