SKF Lincoln 85552 Product manual

FlowMaster 24 V DC
Rotary driven electric pump
Models 85552, 85553, 85554, 85566, 85567, 85568, 85569,
85587, 85591, 274873, 275560, 275626, 275663 and 277560
Series “B”
U.S. Patents 8,102,676 and
6,872,161
Foriegn patent pending
Installation and maintenance guide
Date of issue May 2013
Form number 404473
Section C8
Page 298Q

Inspection
If over pressurizing of the equipment is
believed to have occurred, contact the fac-
tory authorized warranty and service center
nearest you for inspection of the pump.
Specialized equipment and knowledge is
required for repair of this pump. Contact the
factory authorized warranty and service
center nearest you for repair or adjustments
other than maintenance specified in this
manual.
Annual inspection by the factory author-
ized warranty and service center nearest
you is recommended.
A list of factory authorized warranty and
service centers is available upon request.
Damaged pumps
Any pump that appears to be damaged in
any way, is badly worn or operates abnor-
mally, shall be removed from use until
repairs are made. Contact the factory
authorized warranty and service center
nearest to you for repairs.
Table of contents
Safety ......................... 2
Description ..................... 3
Appropriate use .................. 3
Pump performance and
specifications .................... 4
Installing the pump. . . . . . . . . . . . . . . 5
Wiring schematic ................ 6
Crankcase oil .................... 8
Pump dimensions ................ 9
Troubleshooting ................. 10
Required tools ................... 11
Setting the pump speed ........... 11
Maintenance and repair ........... 12
Repair parts list ................. 25
Safety
Read and carefully observe these operating
instructions before unpacking and operating
the pump! The pump must be operated,
maintained and repaired exclusively by per-
sons familiar with the operating instruc-
tions. Local safety regulations regarding
installation, operation and maintenance
must be followed.
Operate this pump only after safety
instructions and this service manual are
fully understood.
Safety instructions
This equipment generates very high grease
pressure.
Indicates a hazardous situation which,
if not avoided, could result in minor or
moderate injury.
CAUTION
Indicates a hazardous situation which,
if not avoided will result in death or seri-
ous injury.
WARNING
Extreme caution should be used when
operating this equipment as material
leaks from loose or ruptured compo-
nents can inject fluid through the skin
and into the body causing serious bodily
injury. Adequate protection is recom-
mended to prevent splashing of material
onto the skin or into the eyes.
If any fluid appears to penetrate the
skin, get emergency medical care imme-
diately. Do not treat as a simple cut. Tell
attending physician exactly what fluid
was injected.
CAUTION
2

Description
A newer version of the FlowMaster pump
was introduced in July of 2008. These units
incorporate the following improvements:
• Bushing & plunger seals used along with
elastomer cup seals for longer life and
better high temperature operation.
• A crankcase oil dipstick.
• Hardened and ground section on the
reciprocating tube for longer life and bet-
ter crankcase oil control.
• Hardened and ground pivot pin bushings
with a tighter fit into the pivot pin anchor.
• Improved pivot pin fastener with deeper
hex head socket.
All of the improved parts can be used with
the older model pumps, so the upgraded
parts and subassemblies will now be sup-
plied to repair older model pumps. Please
refer to the maintenance and repair
section, page 12 for a list of the new repair
kits and their proper application.
• 85552 - Pump for 5 gallon (18 liter) pail,
speed range 5 to 50 rpm maximum pres-
sure rating 5,000 psi (345 bar).
• 85553 - Pump for 120 lb. (54 kg) drum,
speed range 5 to 50 rpm, pressure rating
5,000 psi (345 bar).
• 85554 - Pump for 60 lb. (27 kg) drum,
speed range 9 to 93 rpm, maximum
pressure rating 5,000 psi (345 bar).
• 85566 - Pump for 120 lb. (54 kg) drum
used on wayside rail lubricators, speed
range 9 to 93 rpm, maximum pressure
rating 5,000 psi (345 bar).
• 85567 - Pump for 60 lb. (27 kg) drum,
speed range 36 to 360 rpm, maximum
pressure rating 5,000 psi (345 bar).
• 85568 - Pump for 90 and 120 lbs. (41
and 54 kg) drum, speed range 36 to
360 rpm, maximum pressure rating
5,000 psi (345 bar).
• 85569 - Pump for 5 gallon (18 liter) pail,
speed range 9.5 to 100 rpm, maximum
pressure rating 2,500 psi (172 bar).
• 85591 - Pump for 400 lb. (181 kg) drum,
speed range 9 to 93 rpm, maximum
pressure rating 5,000 psi (345 bar).
• 85587 - Pump for 5 gallon (18 liter) pail,
used on wayside rail lubricators, speed
range 9 to 93 rpm.
• 274873- Pump for 5 gallon (18 liter) pail,
7:1 ratio, 6,000 psi (414 bar), 25 to
260 rpm, used on hose reel pump
assemblies.
• 275560 - Pump for 90 and 120 lbs. (41
and 54 kg) drum. Speed range 36 to
360 rpm, maximum pressure rating
5,000 psi (345 bar).
• 275636 - Pump for 60 lb. (27 kg) drum
7:1 ratio.
• 275663 - Pump for 60 lb. (27 kg) drum,
speed range 36 to 360 rpm, maximum
pressure rating 5,000 psi (345 bar).
• 277560 - Pump for 55 lb (25 kg) drum,
speed range 9 to 93 rpm, maximum
5,000 psi (345 bar).
General description
The Lincoln Industrial rotary DC electric
pump uses a 24 V DC motor and either a
single a two stage planetary gear drive.
Grease output is proportional to the pump
rpm. The pump is primarily designed for
centralized lubrication systems such as the
Single Line Parallel, Single Line Progressive
and Two Line systems.
The pump is driven by the rotary motion
of the electric motor. Rotary motion is con-
verted to reciprocating motion through an
eccentric crank mechanism. The reciprocat-
ing action causes the pump cylinder to move
up and down. The unit is a positive displace-
ment double-acting pump as grease output
occurs during both the up and down stroke.
The pump motor employs an integral speed
control capable of reducing pump speed to
10% of its maximum value.
During the down stroke, the pump cylin-
der is extended into the grease. Through the
combination of shovel action and vacuum
generated in the pump cylinder chamber,
the grease is forced into the pump cylinder.
Simultaneously, grease is discharged
through the outlet of the pump. The volume
of grease during intake is twice the amount
of grease output during one cycle. During
the upstroke, the inlet check closes, and one
half of the grease taken in during the previ-
ous stroke is transferred through the outlet
check and discharged to the outlet port. Typ-
ical output of the pump is shown on page 4.
Appropriate use
• All pump models are exclusively designed
to pump and dispense lubricants using
24 V DC electric power.
• The maximum specification ratings
should not be exceeded.
• Any other use not in accordance with
instructions will result in loss of claims for
warranty and liability.
3

Pump performance specification
Operating temperature –40 to +150 °F (–40 to +66 °C)
Operating voltage 24 V DC (18 V DC min., 32 V DC max.)1)
Motor 1/3 HP (0.25 kw)
Current draw, A † tables 2, 3, 4 and 5
Output/pump cycle 0.07 cu. in. (1.51 cu. cm)
Pump performance † table 1
Pump outlets 1/4 in. NPT female
Weight 30 lbs. (13.3 kg)
1) Motor controller will shut motor off outside voltage limits
Do not exceed maximum rated outlet
pressure for these pumps. Exceeding
rated pressure may result in damage to
system components and personal injury.
WARNING
Pumps are not equipped with a high
pressure shut-off valve.
WARNING
Table 1
Electric pump performance specifications. Output in cu. in/min (cu. cm/min).
Test conducted with Alvania NLGI #2 grade grease at 1000 psi (69 bar) backpressure
Temperature °F (°C) 50 rpm 100 rpm 150 rpm 200 rpm 250 rpm 300 rpm 350 rpm
80 (27) 3.5 (57) 7 (115) 10.5 (172) 14 (229) 17.5 (287) 21 (344) 24.5 (401)
40 (4) 3.5 (57) 7 (115) 10.5 (172) 14 (229) 17.5 (287) 21 (344) 24.5 (401)
20 (–7) 3 (49) 6 (98) 9 (147) 12 (197) 15 (246) 18 (295) 21 (344)
0 (–18) 3 (49) 6 (98) 9 (147) 12 (197) 15 (246) 18 (295) 21 (344)
–10 (–23) 2.5 (41) 5 (82) 7.5 (123) 10 (164) 12.5 (205) 15 (246) 17.5 (287)
4

Fig. 1A
Installing the pump
Typical installation is shown only as a guide
for selecting and installing system compo-
nents. Contact your Lincoln Industrial repre-
sentative for assistance in designing a sys-
tem to suit your specific needs.
The pump was tested in lightweight oil
which was left in to protect the pump from
corrosion. Flush the pump before connect-
ing it to the system to prevent contamina-
tion of the grease with residual oil.
1 Mount the pump securely on the drum
cover so that it cannot move or vibrate
during operation.
2 Connect material supply line to the pump
outlet. Install a safety unloader (A)
(†fig. 2, page 8) such as 272722
(4000 psi [276 bar]) or 272572 (2500 psi
[172 bar]), to outlet on opposite side of
the pump.
3 Install high pressure shut-off valve (C)
(†fig. 2, page 8) in the material supply
line (required).
4 Wire the pump motor and vent valve
(if used) († fig. 1B, page 6).
5 Connect power to motor leads. Be sure to
connect red motor lead to the positive
side of the circuit († fig. 1A). Fuse the
motor as recommended in tables 2, 3, 4,
5 and 6.
!Notice
The motor is polarity sensitive
and will not run if improperly wired.
5

Fig. 1B
Top figure – pump with controller
Bottom figure– pump without controller
1) Note: if a third wire is present (green/yellow) it can be clipped and removed and it is not necessary as a ground wire.
2) Note: be sure to connect red motor lead to the positive side of the circuit. The motor is polarity sensitive and will not run if improperly wired.
Control wiring diagram using
model 8530 lubrication system
controller
Must have pressure switch
Bat -
Bat + 24 V DC
Vent valve solenoid
coil (N.O.) 1)
Cut 24 V DC pin
Red wire
Black wire
Power sw
Terminal B
Terminal A
24 V DC pin
24 V DC
Bat + Bat -
Alarm
69897
Solenoid
relay switch
2 x 10-32 thread
2 x 5/16-24 thread
Fuse
24 V DC
Bat +
Bat -
Pump motor
M
Manual switch
Fuse
24 V DC
Bat. +
Bat. -
Red wire2)
Black wire
M
6

Mount the pump securely on the drum
cover. Failure to do so could result in
personal injury and equipment damage.
Always install a relief valve in the
pump outlet to ensure pump pressure is
below 5,000 psi (345 bar) or 2,500 psi
(172 bar) for Model 85569. Use high
pressure components to reduce risk of
serious injury including fluid injection
and splashing in the eyes or on the skin.
WARNING
Table 2
Electric FlowMaster Pump
24 V DC, 5:1 gear ratio
85567, 85568, 275560 and 275663
Backpressure
psi (bar) rpm Draw (A)1)
0 (0) 375 2
1000 (69) 350 4.5
2000 (138) 325 7.3
3000 (207) 300 9.6
4000 (276) 280 12
5000 (345) 250 15.3
1) A field installed fuse of 20 A is recommended
Table 3
Electric FlowMaster Pump
24 V DC, 17.8:1 gear ratio, 2 stage, 85569
Backpressure
psi (bar) rpm Draw (A)1)
0 (0) 107 1.28
1000 (69) 105 2
2000 (138) 103 2.75
2500 (272) 100 3.2
1) A field installed fuse of 5 A is recommended
Table 4
Electric FlowMaster Pump
24 V DC, 34:1 gear ratio
2 stage, 85552 and 85553
Backpressure
psi (bar) rpm Draw (A)1)
0 (0) 58.2 1.16
1000 (69) 57.6 1.57
2000 (138) 57.0 2.10
3000 (207) 56.5 2.62
4000 (276) 55.9 3.20
5000 (345) 55.4 4.20
1) A field installed fuse of 6 A is recommended
Table 5
Electric FlowMaster Pump
24 V DC, 19:1 gear ratio, 2 stage
85554, 85566, 85587, 85591 and 277560
Backpressure
psi (bar) rpm Draw (A)1)
0 (0) 105 1.28
1000 (69) 103 2.03
2000 (138) 101 2.96
3000 (207) 99 3.68
4000 (276) 98 4.83
5000 (345) 96 6.47
1) A field installed fuse of 10 A is recommended
Table 6
Electric FlowMaster Pump
24 V DC, 7:1 gear ratio, 274873 and 275626
Backpressure psi (bar) rpm Draw (A)1) Output cu. in. (cu. cm)
0 (0) 268 2.0 18.8 (308)
1000 (69) 255 4.0 17.8 (292)
2000 (138) 239 7.2 16.7 (274)
3000 (207) 224 8.2 15.6 (256)
4000 (276) 210 10.0 14.7 (241)
5000 (345) 200 12.3 14.0 (229)
1) A field installed fuse of 20 A is recommended
7

Operation
1 Remove the pump outlet line.
2 With the pump in a full container of lubri-
cant, energize the pump. Make sure all air
has been expelled from the pump and
even lubricant flow is achieved.
3 Reattach the pump outlet line. Never
allow the pump to run dry of lubricant.
Monitor the supply lubricant level and
refill when necessary.
A - Safety Unloader 272722 or 272572
B - 24 VDC from Controller
C- Outlet Shut-off Valve
D - Material Supply Line
E - Follower Plate (85492 for 120 lb. [54 kg])
F - Drum Cover (84616 for 120 lb. [54 kg])
G - Field Installed Fuse
Fig. 2
A
B
C
D
E
F
I
All pumps are set to run at full speed.
Do not change the settings for the
pump until after the start up
procedure.
WARNING
Crankcase oil service interval
recommendations
• Check the oil level after every 750 hours
of machine operation, or every month.
• Change the oil after every 2,000 hours of
machine operation or every year.
• Use SAE 10W30 motor oil in all units
used in an ambient temperature between
–40 to 150 °F (–40 to 66 °C). For ambient
temperatures between –70 to 50 °F (–57
to 10 °C), use Mobil Arrow HFA Low Tem-
perature oil.
• Oil level should be at the dot on the dip-
stick (middle of the crankshaft) using
10W30 motor oil (15 oz. [443 ml)).
G
8

Fig. 3
Dimensions
Model Dim “A” in. (mm) Dim “B” in. (mm)
85552, 85569, 85587,
274873, 275626
13.69 (348) 22.28 (566)
85554, 85567, 275663 19.00 (483) 27.63 (702)
85553, 85566, 85568.
275560
27.50 (699) 36.03 (915)
85591 34.00 (864) 42.44 (1,078)
277560 15.68 (389) 23.29 (592)
5.843 in.
(148 mm)
1.032 in.
(26 mm)
2.922 in.
(74 mm)
B
A
1.252 in.
(32 mm)
8.97 in.
(228 mm)
6.82 in.
(173 mm)
2.260 in.
(57 mm)
4 x 1/4-20 thread
2.25 in.
(57 mm) 2.25 in.
(57 mm)
9

Troubleshooting
Condition Possible cause Corrective action
Pump does not run. Pump is seized or damaged. Dismantle the pump and repair defective or seized
component. See disassembly and assembly
procedure.
Incorrect polarity. Check to ensure red motor lead is connected to the
positive battery terminal.
Pump speeds up or runs erratically. Low level of grease or reservoir is empty. Refill reservoir.
Follower plate is stuck and separated from grease. Check follower plate and container for damage.
Pump piston or checks are worn. Disassemble the pump and repair.
Pump runs, but output is low. Pump speed set too low. Increase motor speed setting.
Faulty inlet (25, 27), faulty discharge check (18, 19)
or damaged O-ring (26).
Replace faulty components.
Weepage from housing cover (30). Cup seal (15) or O-Ring (13b) wore out. Check the seals and replace if necessary.
Pump becomes noisy. No crankcase oil. Add crankcase oil. Remove crankcase cover (30)
from Pump Housing (67). Oil level should be at the
middle of the crankshaft (37). Check dipstick (30a)
to verify. If unit is used in cold climates, use Mobil
Arrow HFA Hydraulic Oil in crankcase.
Worn wrist pin bushing (12). Check the bushings and replace if necessary.
Pump does not build pressure. Foreign material holding lower check open. Dismantle & clear check. Consider installing inlet
strainer 272180. before returning pump to
service.
Motor runs, but no pump output. Gearset or adapter shaft stripped or broken. Dismantle and replace damaged part.
10

Tools required for
maintenance, repair
and adjustment
• 7/16 in. (11 mm) open end wrench
• 1 1/2 in. (38 mm) open end wrench
• 3/4 in. (19 mm) open end wrench
• 12 in. (305 mm) cresent wrench
• 1/8 in. (3 mm) hex head wrench
• 5/32 in. (4 mm) hex head wrench
• 1/4 in. (7 mm) hex head wrench
• 5/16 in. (8 mm) hex head wrench
• 3/8 in. (10 mm) hex head wrench
• 1/4 in. (7 mm) drive socket
• 1/4 in. (7 mm) socket
• 5/16 in. (8 mm) socket
• Flat blade screwdriver 0.10 in. (3 mm)
wide and 0.025 in. (1 mm) thick
• Pick to remove seals and spiral retaining
rings
• Small snap ring pliers
• Special tool kit 276275
• Phillips screwdriver
• 1/2 in. (13 mm) hex head wrenches
• Hammer
• Torque wrench (ft.lbf. and in.lbf.)
• Hex head socket adapters (req’d to torque
hex head screws)
• Locktite 242 medium strength thread lock
or equivalent.
• Loctite 222MS thread lock or equivalent
Setting the pump speed
The motor used in the 24 V DC FlowMaster
pump is equipped with a built-in speed con-
trol. The pump speed is factory set to the
maximum setting, but is easily changed in
the field as follows:
1 Locate the speed adjustment screw on
the pump motor. It is located under a cov-
er screw 120° away from power cord.
2 Remove the cover screw by turning it
counterclockwise with a phillips screw-
driver. Take care not to lose the white
plastic seal washer under the screw head.
3 Remove the phillips head screw.
4 Note the small brass potentiometer
adjustment screw.
5 Using a flat blade screwdriver with a
0.10 in. (3 mm) wide and 0.025 in.
(1 mm) thick tip, adjust the screw coun-
terclockwise to reduce the motor speed.
The screw has no stops and has a total
travel of 30 turns. Do not reduce the
motor speed below 200 rpm. (Divide
motor speed by the gear ratio for pump
speed.) Refer to page 3 for speed recom-
mendations for each model number.
6 Reinstall phillips head cover screw when
adjustment is complete.
11

Maintenance and
repair
To reduce the risk of an injury from injection,
splashing fluid or moving parts, relieve
pressure and disconnect power supply
before servicing or repairing the pump.
Always use Lincoln Industrial parts for
service and repair.
WARNING
1 Remove three jam nuts (42). Reassem-
bly: torque to 100 to 110 in.lbf. (11 to
12 Nm).
2 Remove three motor mounting screws
(51) with lockwashers (51a). Reassem-
bly: torque to 100 to 110 in.lbf. (11 to
12 Nm).
3 Remove motor (50).
4 Remove motor o-ring (44) and seal.
Reassembly recommendation: replace
o-ring.
5 Remove gear box mounting screws (46)
with lockwashers (45). Reassembly:
torque to 20 to 25 ft.lbf. (27 to 34 Nm).
6 Remove adaptor shaft (41).
7 Remove gearbox o-ring seal (36). Reas-
sembly recommendation: replace o-ring.
8 Remove dipstick (30a).
12

9 Drain oil. Reassembly recommendations:
use SAE 10W30 motor oil filled to dip-
stick mark (15 oz. [443 ml]).
10 Remove housing cover screws (28).
Reassembly torque 10 to 15 in.lbf. (1 to
2 Nm). Reassembly recommendations:
replace screw gaskets.
11 Remove housing cover (30) and gasket
(31). Reassembly recommendation:
replace gasket.
12 Remove bearing cover screws (66) with
lockwashers (65). Reassembly torque: 32
to 38 in.lbf. (3,6 to 4,3 Nm).
13 Remove bearing cover (64).
14 Remove bearing cover o-ring (63). Reas-
sembly recommendations: replace bear-
ing cover o-ring.
15 Note c-clip location on shaft (62).
16 Remove clip.
13

17 Using 2 1/2 in. (64mm) diameter steel
pipe, provided in tool kit (276275), sup-
port the front housing seal and bearing
as shown.
18 Support crank rod as shown with a stack
of washers or other spacer of the proper
thickness.
19 Drive out the pump shaft (37) using
5/8 in. (16 mm) nylon rod provided in tool
kit (276275).
20 Pump shaft (37) will drop inside the sup-
port pipe when it clears the pump
assembly.
21 Loosen outlet pin nuts (32). Reassembly
torque: 30 to 35 ft.lbf. (41 to 47 Nm).
22 Remove outlet nuts (32) from both sides
of pump. Reassembly recommendation:
use Loctite 242 or equivalent on outlet
nut threads.
23 Remove spiral retaining ring (59) from
housing tube.
14

24 Remove shovel plug (58) and spacer
(56b) from housing tube.
25 Push pump element (1 through 27) out
of housing tube with nylon rod and ham-
mer (included in tool kit 276275). Re-
assembly recommendation: replace
pump element in housing tube with
housing tube slightly loose, then torque
housing tube (56a) to pump housing (67)
to 20 to 25 ft.lbf. (27 to 34 Nm).
26 Pull pump element free of housing.
27 Remove housing tube (56a). Reassembly
torque: 20 to 25 ft.lbf. (27 to 34 Nm).
28 Exploded view of housing tube (56a),
spacer (56b) and shovel plug (58).
15

29 Remove bronze bushing (57).
30 Remove oil seal o-ring (53) and backup
washer (54). Reassembly recommenda-
tion: replace o-ring seal and backup
washer. Backup washer must be placed
in tube first, then the o-ring).
31 Remove wrist pin bushing screws (11).
Reassembly torque: 100 to 110 in.lbf.
(11 to 12 Nm). Reassembly recommen-
dations: use Loctite 242 or equivalent on
screw threads.
32 View of wrist pin bushing (12).
33 Press out wrist pin bushing (12) with
5/16-24 bolt (from 276275 kit), needed
since pivot bushings often stick in wrist
pin anchor (13a).
34 Remove wrist pin bushing (12).
35 Remove crankkrod and eccentric assem-
bly (1 to 7).
36 Loosen wrist pin anchor (13a). Reas-
sembly torque: 20 to 25 ft.lbf. (27 to
34 Nm).
37 Remove wrist pin anchor (13a). Reas-
sembly recommendations: replace o-ring
seal (13b), be sure threads on wrist pin
anchor (13a) are clean and free of all oil
or other fluids.)
16

38 View of plunger tube and plunger tube
bushing assembly (10, 10a, 10b, 10c
and 10d).
39 Loosen plunger tube (10). Reassembly
torque: 100 to 110 in.lbf. (11 to 12 Nm).
40 Remove plunger tube (10) and associ-
ated parts. Reassembly recommenda-
tions: replace o-ring (10c) on bushing
(10a). Use Loctite 242 or equivalent on
plunger tube threads.)
41 View of bushing assembly (10 through
10d) removed.
42 View of wrist pin anchor (13a) showing
upper cup seal (15) and nylon back up
washer (14).
43 Pull cup seal (15) out of wrist pin anchor
(13a).
Series “B”
Top of
Pump
Top of
pump
44 Remove cup seal (15) and backup wash-
er (14). Reassembly recommendations:
replace cup seal and backup washer.
See detail below for orientation.
13a 15
14
Spacer
275376
To upgrade
series "A"
17

45 Hold outlet pin (8) and plunger tube (10)
in vise.
46 Loosen plunger tube (10) from outlet pin
(8). Reassembly torque: 100 to
110 in.lbf. (11 to 12 Nm).
47 Remove plunger tube (10). Reassembly
recommendations; replace o-ring (9).
Use Loctite 242 or equivalent on plunger
tube threads.).
48 Remove o-ring (9).
49 View of o-ring (9) removed.
50 Remove c-clip (10d).
51 Remove o-ring (10c)1).
52 Remove backup washer (10b)1).
53 View of upper bushing and seals (10
through 10d)1).
1) Series “A” pump does not have bushing and seals (10a through 10d). Follow instructions for reassembly to series “B” pump.
18

54 Loosen check seal housing (27) with
3/8 in. (10 mm) hex head wrench. Re-
assembly torque: 20 to 25 ft.lbf. (27 to
34 Nm).
55 Check seat housing assembly (27) and
associated parts removed. Reassembly
recommendations: replace o-ring seal
(26). Apply Loctite 242 or equivalent to
check seat housing threads.
56 Remove ball cage (24), check ball (25)
and o-ring seal (26) from check seat
housing (27).
57 Remove lower bushing (9) from recipro-
cating tube (20). Reassembly recom-
mendations: replace o-ring seal (26).
Remove lower cup (21) from reciprocat-
ing tube (20). Reassembly recommenda-
tions: replace lower cup seal see below
for orientation. Remove pump bushing
(19a) from pump plunger (19).
Top of
pump
Bottom of
[ump
58 To remove lower plunger use special tool
provided in the special tool kit (276275).
20 21
19

59 With tool in place, insert the pin from
tool kit (276275) through the tool and
into the plunger outlet hole.
60 Remove plunger (19). Reassembly
torque: 100 to 110 in.lbf. Reassembly
recommendations: use Loctite 242 or
equivalent on plunger threads).
61 Push out check ball (18) and check spring
(17).
62 Clamp crank rod/eccentric assembly
(1 through 7) in vise.
63 Loosen flat head screw (1). Reassembly
torque: 100 to 110 in.lbf. (11 to 12 Nm).
64 Remove flat head screws (1). Reassem-
bly recommendation: use Loctite 242 on
screw threads.
65 With both flat head screws removed,
remove counterbalance weights (2).
66 Remove inner and outer retaining ring
(5 and 3) from both sides.
20