Clark 110.15 User manual

CLARK warr:.an,ts,~avh t!~W Construction Machinery Group product, includi"bt~ttachments
,and iicc~~~9r1~t"Wf~(b, ~ora by it to be'merchantable'and free from defects in material and
.'wofkma'1;S.hip.,.:';,'.. '~'
causeany p~r;tof a CLARK productcovered bythiswarran~(except ase~
proves to be defective in material or.workmanship duting six (6) moii1fl'\'lm-
follOWingthe delivery of said productto the person whofirSt·'pilts:,jtintquse,to be
(eDlalcedwithoutcharge with a new or repaired part (whicheverCLARK 'etectS). CLARKalso
'~~'11~~1~~~ e the laborto remove any suchdefective part and to in e nftWI<>rrepaired part
provided without charge to the owner of said CLARK , •.JM~s and laborto
th.iswarrantywill be f~rnished by a CLARK distrib4~2!. , " .' naled by CLARK. .
also each replacementpart for the;pr~,I.IC:,t!n;overedby this warranty sold
Jbyi,t.}9 and free from defects in material and workmanship. CLARK.will
,'cause any ent part which provesto . the first six (6) montns
following its' in a CLARK product to be charge, with a new or
.~", 'repaired par,! CLARK el~c:ts). '.
Cl,.ARI,<'S'A(;irranty not cover: (i)the of partsfoundto have been damaged
by aQu.sPr.(.accid~ntor a!failureto rn RKprqductor part accordingto the
instrd~1'6n·s~~.pPlie.'ablet,oit~(ii).t.h.e reinstalla defective replacement part
. after'~ expiration of the war{~nty to the prqduct in which such part is 10-
,C.81.eq, (ii.,·)).overt.irn.e labor. . 'of,the CLARK product to the distrib-
, utor:ssejvi,cefacilItyor' servicemento the product'slocation,
''(v) the engine M'the tires any . it cover the carrier on any truck
i'nount~ hYdrallJiccranes. The warranty. manufacturers of these COIJIPO::
nents,~hallapp[}/to said items unless said no warranty with respecfto
items, in which event CLARK'S "'''""nnJ
n,e 8~~eraccepts,this warranty a~dthe
,as,.pa'lQfthe purchase of the CLARK oroouct.os [)art
THI~ARRANTY IS EXCLUSIVE AND IS.IN
';I'RESSED OR IMPLIED AND THERE IS NO
':~ITY OR FITNES,SFOR A PARTICULARPU
I; " Remedies available to any person claiming l,Ihderthis warrlir:'lty"we exclbsive and ex-
limited tb obtaining the parts and the I$bor,where applicable, in accordance with
this . '.,,)
K'S es, damages or exp,&nsesof any kind ariSing from its design,
products or pa~~'c'pvered by this warranty, whether based on
.. liability art' 'ng from a breachof this warranty,is limited,
. 10"an a ..·· ount not exceeding the cost of performing
in '. .'."warranty a cording to its terms, and in no event 'shall
aC'!J!YiI;JXIt;;.I;J~'g.,the'(alue of theCL1RK product giving rise to such liability.
CLARK disclaims .. for loss. damage or expanse attri,Rutableto a loss'of use"Of
"the",9L.A.r::IKp~O(1)Jct,a '. .' damage to p,t@pertyother than the CLARK product, a loss
of pt()fil's· or other com loss, or an~ special or consequential damages (except
liability for consequenti '. which by~law rui not be discl'.\iWed).
;,"". ".,', ,-_'.... ''''''''''h,cnl~so'd theproductto which thi~,:w.r~
iml:ilii.'set,fcN1hherein
which'ttliIS..,'W,arra applies.
.. RMiTIES EX-
,MERCHANTABIL-
The term Construction Mactllnery Group
en, scrapers. log skldders log loaclers
truCks. straddle carrrers~;skid Sleet loaders ·aQ',eultural'·i)toc
GeneralPrOductsGrou;t)
'''11 type" Tractorshovel. (load.,,), wtlHf doz·
rs. and power shovels. (Not :rncludecfar.: lift
J by CLARI('S Mlte"al Handling G,o'!p or me
Rev.sed·August1978
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£~L'IRK®
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EQUIPMENT
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GENERAL INFORMATI9N
,
ENGINE
,_'
ENGINE AIR CLEANER
,,
MAINTENANCE
MANUAL
,COOLING SYSTEM
TORQUE CONVERTER'
secrloa INDEX
TRANSMISSION,
"
FOR DR'IVELINE
I
-,
MODEL
11·0.15
'::"'ELEVATIr,lG SCRAPER
.,
i'"
. \
~l'. ~i
,;_' ..
Foryourconvenienceandto facilitate
location of the.major sectionsin this
manual,the first page of eachsection
isimprinted with a block}quare in a
positioncorrespondingto the section
position';c:ulistedon thispage. Touse
" therapid index,hold theboundedge
~f, tJ1e manual,with the left hand dnd
s'!;'readunbound edge of ~ages'with
right thum~'until square-Is laccited
correspondingto inde~ position of
sectiondesired.Thenletpagesescap"
under the right thumb until desired
sectionisreached.
ELEVATOR DRIVEAXLE "'~'~":","."''''',''l'''',.
•• 20A-HydtUic H.intl ,D1 Mein e~
< , , Jl20B.HydreuHc 011Pump
. ., - ,' t. 2OC-~ydrllUll.c, Cylh:ld. '. ;
HYDRAULIC SYSTEM
'" ", 200-H¥Jireul .1C Control Vein
, • '20E-HydrllUllC EleYetor Syst~
20F-Hydrelllic St_,ing Circuit '{\
2~..st-r.i)]i ~.!!'~eCterlstICl 'B'
2OH~HendP~rriP'! . .
". , '..s' ion S ItIlll'1 •
..·.· m ~ y •••••••••• r.
'ELEVATOR
WHEN REORDERING THIS MANUAL
SPECIFY No.

•
GENERAL INFORMATION
ENGINE
Detroit Diesel, Two Cycle Diesel
Rated Horsepower at 2100 RPM
Maximum Torque at 1400 RPM
Number of Cylinders
Bore and Stroke
Total Displacement
Lubrication
flywheel Housing Size
Type of Governor
Full Load
High Idle
Low Idle
FIL TERS
Lube Oil (Engine) Full Flow Type
Bypass Type
Fuel Oi 1
, A tr-Eng ine
~
COOLING SYSTEM
Radiator
Water Pump
fan
Capacity
TORQUE CONVERTER
Make
Mounting
Maximum Torque Multiplication
Wheel Diameter
Housino Size
Drive Ratio
Chargi ng Pump ~* at 21 00 En~~~e
~N-l
p.t
6V-7.1T N70
250
690 .f t Z lb s .
6
4-14 x 5 in.
426 cu in
Pressure Feed
SAE #1
Limiting Speed
2100 RPM
2225
550-600
A.C.
A. C.
A.C.
Dual Element,
Donaldson
Cast Core, Flat Tube
and Fin
Ce n t rt fugal Pum p
32" Diameter, 8-Blade
Belt Drive
18 Gallon
Clark CL-8602-18
Engine Flywheel
3.02:1
16 in
SAE #1
Offset 1: 1
31 GPM

GENERAL INFORMATION
TRANSMISSION
Make
Model
Gearing
Speed
DRIVE AXLE
Make and Model
Type
Reduction
DIFFERENTIAL
Make and Model
Type
'Reduction
~I RES Optional
26.Sx29-22 Ply
22 in
Size
Rim Size
BRAKES
Number of Wheels
Type
Actuation
STEERING SYSTEM
Steering Pump
Make
Steering Valve
Make
Steeri ng Pump ~"1
Make and Model',
Gear Width
Rated FLOW at 2100 RPM and
2000 PSI
Cy1 inders
Make
Type
". :. ~'-~_:"'_"
--'1
()
Clark 5921-1
5921-1
Straight Spur Type
9 Forward, 2 Reverse
Clark 0-37500
Full Floating
22.393:1
Clark 0-37S00
Spiral Bevel Pinion
and Ring Gear
5.429:1
Standard
o
26.5x2S-24 Ply
22 in
4
18 in Disc
Air over Hydraulic
o
Manual
Ross
Manual
Ross
Commercial PSO
1-3/4 in
42 GPM
Hancock
Double Acting, Single
Stage
. -,.. -~<~
.~----~ -- .. :..~. . .....

SECTION 1 GENERAL INFORMATION
Page 3
Page 3
HYDRAULIC SYSTEM
Lift and Ejection System
Pump
Model
G'e.arWidth
Rated Flow at 2100 RPM and 2000 PSI
Contro 1 Valve
Pressure Relief Setting
Elevator Hydraulics
Pump
Model
Rated Flow at 2100 RPM
Motor
Pressure Setting
Fi1ter
ELEVATOR
•
'Drive
Make
Reduction Ratio
Sprockets
Pitch Line Diameter
Number of Teeth
Chain
Make
Number of Links
Pitch
Drags
Number
Length
Width
Length of Elevator
WEIGHT
Empty
Rated Load
Gross
WEIGHT DISTRIB1jt0N
Empty: Front
Rear
Loaded: Front
Rear
Commerci a1
P50
1.5 in
33.5 gpm
Cessna 30632
2250 psi
Sundstrand
23 Series PV
49 GPM
Sundstrand 24 MF
5000 PSI
Gresen 10 Micron
C1ark
28.2: 1
20.54 in
21
Rex Chainbelt
90
3.110 in
18
93.25 in
6.10 in
116 in
42,1001bs'
36,000 tbs
78,100 lbs.
69%
31%
52%
48%

SECTION 1
Page 4
GENERAL INFoRMATION
._ ~ __Ci'; --
.,
GENERAL DIMENSIONS
Overall Length
Overall Width
Overall Height
Wheelbase
Track Width
MaximumDepth of Cut
Ground Clearance
Width Required for 180 0 Turn
CAPACITIES
Heaped Load
Rated Load
I
i
~
.c: ~, ...~. 6_ '
408 in
114 in
123 in.
252 in,
82 in.
6.5 in.
18 in
31 ft.8 in.
15 cu. yds.
36,000 1.bs.
·.._·~j,'~L _
•

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Page I
SECTION 2
ENGINE
DETROIT DIESEL SERIES 6V-71T
•
i
I
l
TYPICAL 6V-71T ENGINE
DESCRIPTION
These units are powered by a GM Diesel Model
6V-71T engine. The engine is of the two-cycle type.
In the two-cycle engine, intake and exhaust take place
during part of the compression strokes. A blower is
provided to force air into the cylinders for expelling
the exhaust gasses and to supply the cylinders with
fresh air for combustion.
due to the arrangement of the crankshaft throws.
There are replaceable liners for ease of maintenance on
cylinders. There are also hand hole cover plates in the
block to facilitate inspection of the liner ports and
cylinders.
The engine is of the valve-in-head type, with the
crankshaft inherently in static and dynamic balance
Refer to the Detroit Diesel V-71 Engines
Maintenance Manual for detailed operating and over-
haul procedures.
PREPARATION FOR REMOVAL
CAUTION: Before removing any engine components, dis-
connect the battery cable from the battery
or from the starter motor to prevent damage
or serious accidents.
Remove the air cleaner from the unit.
5.
6.
Drain the crankcase and cooling system.
I.
Disconnect the hood. grill. and cowling
7.
Disconnect and remove the radiator water
and oil, inlet and outlet hoses. Remove
radiator mounting bolts and with suitable
hoist equipment lift the radiator from
the unit.
Disconnect all air, hydraulic, lube and fuel lines
necessary for the removal of the engine. Plug the
removed lines to prevent entrance of foreign
and remove them from the unit.
I
2. Disconnect the exhaust muffler and pipes at the
engine and remove them.
3.
Remove the air restriction gauge line.
4.
Remove the air cleaner piping and manifold from
the unit.
"_,
matter.

SECTION 2
Page 2
ENGINE
9. Disconnect and tag all electrical leads from the
starter motor, generator and voltage regulator.
10. Disconnect all instrument and gauge lines, throt-
tle linkage and shut-down cable from engine.
11. Disconnect the torque converter from the engine.
REMOVAL
1. Support the engine with suitable lifting device
using the lifting eyes provided on the engine for
that purpose.
2. Remove the nuts, bolts, lockwashers, etc. fasten-
ing the engine to the mounts on the tractor
main frame.
3. Carefully lift the engine out of the frame and
mount it on a suitable work stand for further
disassembly.
v
4. Refer to the Detroit Diesel V-71 Engines
and Turbocharger Maintenance Manual fori. J!
further disassembly and assembly proced~
for the engine. _
INSTALLATION
1. Attach a suitable lifting device to the lifting eyes
on the engine.
2.
•
With the rear mounts properly in posi~
tion on the engine, carefully position
the engine on the ~ain frame.
Install rear and f~nt mount baits',
washers, and nuts. l
Install the torque converter on the engine. See
Torque Converter Section.
3.
4.
5.
Connect all instrument and gauge lines, throttle
linkage and shut-down cable to engine.
6.
Connect all electrical leads to the starter motor,
generator and voltage regulator.
CAUTION: Improper connections or crossed wires can
cause severe damage to the electrical system
and its components.
7. Using a suitable lifting device, position the ra-
diator on the radiator mounts on the frame and
secure it with fasteners removed on disassembly.
8. Attach a suitable lifting device to the radiator
and position it on the tractor frame.
Secure with mounting bolts.
•
9.
Connect all air, hydraulic, lube and fuel lines
which were removed from the engine. Connect
radiator inlet and outlet hoses.
10. Using suitable lifting device, position the air
cleaner on the unit and secure with fasteners re-
moved on disassembly.
11. Install the air cleaner plpmg and manifold and
the air restriction gauge line.
Install the exhaust stack, the hood,
cowling, and grill.
Fill the crankcase and cooling system. Refer to
the Lubrication Chart for recommended oil, cool-
ant and capacities.
12.
13.
14. Tighten the fan and generator belts.
15. Reconnect battery cables.
16. Refer to the Detroit Diesel Maintenance Manual
for instructions on starting a new or newly re-
built engine for the first time.
17. During the run-in period, check for leaks in the
air, converter cooling, fuel, hydraulic, lube and
air cleaner lines and fittings. Also check gauges
for proper operation.
•
"-
*•

Turbochargers will run trouble-free when properly
maintained. When a unit fails unexpectedly, the
cause is often neglect of basic service needs.
The turbocharger consists of a turbine housing, a
compressor housing and a center housing and rotat-
ing assembly. The view below illustrates these
components and the direction I)f exhaust gas and
air flows. I
SECTION 2.~:
Page 3
TYPICAL 6V-71T ENGINE
fl~------------------------------~
COMPRESSED AIR
~
AMIIENT AIR
INLET
COMPRESSOR WHEEL •
Engine exhaust gasses expand through the turbine
housing to the atmosphere causing the turbine wheel
d shaft to rotate. The compressor wheel mounted
-: the opposite end of the shaft rotates at turbine
., speed. The compressor wheel draws air into the
- compressor housing, compresses it and delivers it to
the engine blower. The turbocharger responds to
engine demands by reacting to the flow of exhaust
gasses. Thus as the power output of the engine
TURBINE EXHAUST GAS OUTlET
I
o EXHAUST GAS
U INLET
increases, the flow of exhaust ga5ses increases
causing an increase in the speed of the rotating
components.
The rotating assembly is supported in the center
housing on two floating bearings. In addition to the
bearings are thrust surfaces which absorb the thrust
loads as the rotating assembly changes position
during engine operation. This hardware requires
adequate lubrication to assure long component life.

SECTION 2
Page 4
TURBOCHARGER LUBRICATION
Oil at engine oil pressure level is supplied to the
turbocharger through a line extending from the
;ylinder block to the top of the center housing. The
illustration below reveals the flow of oil inside the
housing.
Upon entering the center housing, the oil flows
through drilled passages in the housing to the shaft
bearings and thrust surfaces. After passing the
pressure points, the oil drains into the lower chamber
of the housing and returns by gravity to the engine
through a line connected to the bottom of the hous-
ing. Return is usually to the engine oil pan, but in a
few installations, it is to the valve rocker cover
Inspect the oil inlet and return lines frequently to
make certain that all connections are tight and the
lines are not dented or looped restricting oil flow to
or from the center housing. Looping the oil return
line disrupts gravity flow to the' engine.
Operating Cautions:
After starting a turbocharged engine, allow it to idle
for a short period to provide adequate lubrication t?V" .'
the shaft bearings and thrust surfaces before loadin .
the engine.
Units that are new that have not been operated re-
ceotl'L or that have been drained of oil for service
~ require prelubrication of the bearings and
thrust surfaces before the engine is started, The
following procedure is recommended:
1. Thoroughly clean the area around the turbo-
charger oil inlet line
2. Remove the oil inlet line from the top of the center
housing. • j
3. Pour approximately four ounces of lubricating '-'
oil in the inlet opening of the center housing.
Turn the rotating assembly by hand to coat the
bearings and thrust surfaces with oil.
~
I
).
Oil ourur
t
RETAINERS AND WASHERS,
')

•
4'. Connect the oil inlet to the top of the center
housing .
OPERATING CONDITIONS
adequate air filtering and excessive restrictions
air and exhaust flows are conditions that will
adversely affect turbocharger life and performance.
Proper air cleaner servicing-and repair when
needed-and a leak tight system will greatly assure
clean air for the turbocharger. Guard against un-
necessary restrictions on air and exhaust flows. Do
not allow restriction levels to exceed the limits
specified in Detroit Diesel engine service manuals.
Daily Checks:
.. 1.
.~i'
Inspect turbocharger mountings, air and exhaust
ducts and connections for leaks. Make this in-
spection with the engine running and with it
shut down.
2. Inspect the engine crankcase breathers for
restriction to normal discharge.
3. Check for signs of oil leaking from the turbo-
charger housings. ,
If any of the above conditions are noted, refrain from
operating the engine until corrective action has been
taken. ;
-
Compressor Housing Checks:
Remove the inlet duct to the turbocharger period-
ically and check for dirt and dust buildup on the
impeller or in the housing. Excessive accumulations
indicate either a leak in the ducting or a faulty air
filtering system Check also for signs of contact be-
tween the impeller and the housing.
Lubricant applied under pressure to the center hous-
ing while the shaft is not turning may allow oil to
enter the turbine and compressor housing. However
r the turbocharger has been operated for a time
nder load conditions and with inlet restriction at
rmal, lube oil in these sections should disappear.
If the oil does not disappear, refer to Chart I of the
Trouble Shooting Charts to determine the cause of
leakage.
"
.
.
._---------------- -- .
SECTION 2
Page 5
Evidence of oil in inlet or outlet ducts or dripping
from either housing indicates a seal problern that will
require a major disassembly of the turbocharger.
This type of problem is described in Chart 2 of the
Trouble Shooting Charts Determine and correct the
cause before operating the engine
SIGNS OF IMPENDING TROUBLE
Take note of unusual turbocharger noises that are
heard while the engine is operating at rated output.
A bearing that is failing will produce a shrill whine
(over and above normal turbine whine.) Unusual
noises may result if there is improper clearance be-
tween the turbine wheel and its housing. If such
noises are detected, turbocharger failure is im-
minent. The turbocharger must be removed from the
engine, disassembled and inspected in accordance
with instructions given in Detroit Diesel engine
service manuals.
Also note unusual turbocharger vibrations that occur
while the engine is under load. The cause of the
vibration should be determined and corrected if
failure is to be avoided.
Excessive exhaust smoke can mean an improper air
and fuel mixture in the cylinders and could be a re-
sult of engine over-loading or a turbocharger
malfunction.
Clearances:
For proper operation, the turbocharger's rotating
assembly should turn free. Whenever the exhaust
ducting is removed, spin the turbine wheel by hand.
If it does not spin freely, refer to Chart 3 of the
Trouble Shooting Charts to determine the cause of
turbine wheel drag.
3

SECTION 2
Page 6
TROUBLE SHOOTING CHARTS
CHART 1
[ 011on compressor wheel or in compressor hOUSing I
I
[ 011being pushed or pulled Ihrough from center hOUSingl
J r
I
I
I clogged engine JI
restricted exhaust I
I aor-,ntakeJ clogged air
oil breathers flow - excessive
restriction
cleaner ele-
back pressure
ment or col-
lapsed Inlet
I
line
J
J
low power Ir
excessive exhaust temperatures
I
I
I
cracked housings - overheated bearings I
I
I turbocharger failure
CHART 2
I oil in manifolds or dripping from housing~l
I
I
seal failure
I
r
seal leakage I
J
I
damage to(turbine
~
damaged or worn I
or compre§sor wheef journal bearings
Or blade; dirt or
carbon build-up on
I
T
wheel or wheels
r
I
I I
unbalance of rotating bearing wear oil starvation or
assembly insufficient lube
1 II
I
phaft journal is bearings appear pounded bearing journal and
shaft are blued In Iworn and grooved. out or extruded. Float
early stages. aluminum !but not blued bearings become fixed or
bearing material can be expanded into center
found on journals. housing bearing boxes
CHART 3
I
drag on turbine wheel
I
I I I I
carbon build-up dirt build-up
r
bearing seizure
II
dirty or worn
I
behind turbine behind compressor bearings
wheel wheel
I
I
I
I
r
air inlake leaks
I
excesSive temperatures.
coked 011
imbalance. dirly oil.
or combustion oil starvation.
msut-
deposits ficienl lubrocation.
normal wear

r~ilfJ
SECTION 3
Page 1
ENGINE AIR (LEANER
Product Description
GENERAL DESCRIPTION
The STG DONACLONE air cleaner is a
heavy duty two-stage unit designed to pro-
vide extended service life, high reliability
and ease of maintenance. It is intended for
use on engines that operate in severe dust
concentrations. Typical applications include
earthmoving, mining, construction and
other large off-highway equipment.
The STG incorporates refinements in
basic DONACLONE air cleaner design and
performance. It has exclusive features per-
mitted by its "T" shape. The increased ele-
ment area of the STG almost doubles the
engine operating period between element
servicings. The horizontal element chamber
permits several distinct advantages includ-
ing: reduction of the number of critical
seals; lateral element removal which elim-
inates the need for overhead clearance;
clean air outlet positioned to allow short,
direct ducting to the engine; heavy gauge
steel housing to protect main element; and
the added protection of a safety element.
The STG comes in several sizes and models
that cover the airflow range of 400 to 1300
cfm. Maintainability, reliability and serv-
iceability have been emphasized through-
out the design.
STG OPERATION
The first of two cleaning stages in the
STG is a cluster of DONACLONE tubes.
These pre-cleaner tubes combine inertial
and centrifugal forces to remove most of
the contaminants from the air. The con-
taminants are deposited in the dust cup
and the pre-cleaned air flows up through
the center of the DONACLONE tubes and
into the element chamber. Air then flows
through the DURALIFE main element
which removes virtuallv all of the remain-
ing contaminants. Thl> I){'!{ '\ Ll Fl·: "afety
element, inside the main dement. provides
continuous air cleaning if the main element
is damaged and while it is being serviced.
•
DURAll FE FILTER MEDIUM
The DURA LIFE filter medium is chem-
ically treated and cured to combine struc-
tural rigidity with resistance to oil and
. ,
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'~
The STG DONACLONE air cleaner provides de-
pendable protection for engines operating in
severe dust concentrations,

SECTION 3
Page 2
SERVICE INDICATOR FIniNG
ON
CLEAN AIR OUTLET
I
e
ELEMENT
CHAMBER
I
SAFETY
ELEMENT RETAINING NUT
AND
LOCKING PIN
GASKET
WASHER
MAIN
ELEMENT
u
=:~:~~ GASKET
WING
NUT
BODY
-CLAMP
u
Basic parts of the SrG DONACLONE air cleaner show exclusive "T" shaped design.

SECTION 3
Page 3
•
Functional diagram of the SrG shows construction features that provide
extended service life, high reliability and ease of maintenance.

SECTION 3
Page 4
water. Porosity of the medium is closely
controlled to remove particles down to the
desired micron size range. The medium is
pleated to enahle installing an extended
area of filter into a compact space. The
pleats are corrugated to keep them apart,
and to allow high airflow, high dust capa-
city and low pressure drop.
...,q
High dust capacity, high efficiency and low
pressure drop are standard features of DURA·
LIFE element for STG air cleaner.
ACCESS COVER
In the STG design, the access cover
closes one end of the element chamber and
provides peripheral support to one end of
the main element. In addition it is the only
part that need he removed for element
servicing.
CLEAN AIR OUTlET
The clean air outlet tube has a beaded
outer end to facilitate a reliable seal of air
transfer ducting. The tube also has a fitting
for mounting a Donaldson Service Indica-
tor. This fitting has a huilt-in safety filter
that prevents accidental dust entry through
the fitting .
u

f)
SECTION 3
Page 5
Service Instructions
GOOD SERVICING A MUST
The STG air cleaner must be properly
serviced to ensure a reliable source of clean
air. An organized STG service procedure,
made a part of the regular preventive main-
tenance program, will lower overall costs
and ensure effective filtration at all times.
Stop the engine
before servicing the air cleaner.
WHEN AND HOW TO SERVICE
Dust Cup (Standard and Quick-Release)
Empty the dust cup when the dust builds
up to within ore and one-quarter inches
from the top or the cup. Remove and in-
spect the dust cup daily until a regular
service interval can be established.
When replacing the standard or entire
quick-release dust cup, be sure a seal is
made between the cup and the body to
maintain high pre-cleaner efficiency. Re-
place the gasket ifit isnot smooth and clean.
This is a dry type air cleaner -
do not use oil.
After a regular service interval has been
established for the quick-release dust cup,
it is serviced by releasing the over-center
latch on the service door. This allows the
cup to be emptied without removing the
Quick·re/ease dust cup.
entire cup. Before relatching the service
door, check its gasket. It too must make a
seal to prevent lossof pre-cleaner efficiency.
Dust Cup (Vacuator Valve)
The Vacuator Valve eliminates the need
for frequent dust cup servicing. However,
it should be inspected at regular intervals
such as engine oil change or refueling. To
function, the Vacuator Valve lips must
point down and be kept free ofdebris. They
should be closed except when the engine is
idling slowly or stopped. If the Vacuator
Valve is lost or damaged, replace it to main-
tain pre-cleaner efficiency and normal ele-
ment service life.
Vacuator Valve dust cup.
Main Element
Measuring the restriction of an STG air
cleaner is the only sure way to tell whether
the main element needs to be serviced. Vis-
ual inspection of the element is deceiving.
Also. a smoky engine exhaust is not a reli-
able way to tell when the element needs
servicing. Restriction can be measured with
a water manometer, a vacuum gauge or
with a permanently installed Donaldson
.~ervice Indicator. Restriction is measured
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SECTION 3
Page 6
at maximum engine airflow. Maximum air-
flow Occurs at high idle for naturally aspi-
rated or mechanically supercharged diesel
engines. Maximum airflow for carbureted
and turbocharged engines occurs at full en-
gine speed and full load. Replace or clean
the element when the restriction has reached
the level recommended by the engine or
equipment manufacturer. After measuring
restriction, be sure to replace the restric-
tion tap plug securely.
If the restriction ishigher than the recom-
mended maximum inches of water (Service
Indicator shows locked red sigrial), clean
the element by one of three methods: (1)
washing in a solution of water and Donald-
son D-1400 filter cleaning compound, (2)
blowing with compressed air, or (3) wash-
ing with water alone. D-1400 is a detergent
with a carbon-dissolving additive. D-1400
and water are best when the element is
loaded with a combination of exhaust car-
bon, soot, oil and dust. Compressed air is
effective when the element is loaded with
dust. Washing with water alone will often
work when air is not available and the ele-
ment has only dust on it. Whichever meth-
od of cleaning is used, the element should
be handled carefully to keep it from being
punctured or dented. Do not attempt to
clean the element by beating or rapping
it. The main element, protected by a steel
shell, is strong enough to take normal han-
dling, but it will not stand an unlimited
amount of abuse. Do not use gasoline
or other volatile solvents to clean ele-
ments. The element or the engine could be
damaged.
I. Removaland Inspection
Stop the engine before removing the ele-
ment. Clean dust off the access cover and
unlatch it. Remove the access cover and
the main element. Do not remove the
safety element.
After the main element has been removed,
immediately inspect it for dust streaks on
the inside. Any dust streak indicates that
the element has been damaged.
Alsocheck the main element gasket. It must
be smooth and flat. If the element or its
gasket is damaged to the extent that dust -V"-- :
might bypass or penetrate either of them,
the element should be discarded at once
and a new element installed in its place.
Service Indicator
The Donaldson Service Indicator is an
air cleaner service gauge that shows a red
signal when the main element should be i i~'
serviced. The reset table red signal locks in '-'
view when a pre-set restriction level is
reached. Although the red signal locked in
view does not mean the engine must be
stopped immediately, the air cleaner ele-
ment should be serviced as soon as possible
to prevent possible engine damage. The
Service Indicator eliminates guess work and
prevents servicing the main element too
often and not often enough.
Service Indicator eliminates guess work in ele-
ment servicing.
AIR CLEANERMAXIMUM RESTRICTIONCHART
MAXIMUM ENGINE CHECKING LOCATION OF
TYPE ENGINE RESTRICTION SPEED CHECK POINT
Turbo
20"
2100 RPM - Full Load At Air Cleaner
Charged 20" 2100 RPM - Full Load At Turbocharger