Symptom-to-Com ponent Chart
Hydraulic System (cont'd)
NOTES
See flushing procedure, page l4-264 and 265,
BSet idle rpm in gear to specified idle speed. lf still no good, adjust motor mounts as outlined in enginesection of this manual.
clf the large clutch piston O-ring is broken, inspect the piston groove for rough machining.
Dlf the clutch pack is seized or is excessively worn. inspect the other clutches fot wear, and check the orificecontrol valves, CPC valve, and linear solenoid for free movement.
lf the linear solenoid is stuck, inspect the clutches for wear.
lf the 1-2 shift valve is stuck closed. the transmission will not upshift. lf stuck open, the transmission hasno lst gear.
Hlf the 2nd orifice control valve is stuck, inspect the 2nd and 3rd clutch Dacks for wear.
lf the 3-4 orifice control valve is stuck, inspect the 3rd and 4th clutch packs for wear.
Jlf the clutch pressure control valve is stuck closed. the transmission will not shift out of lst gear.
Klmproper alignment of main valve body and torque converter housing may cause ATF pump seizure. Thesymptoms are mostly an rpm-related ticking noise or a high-pitched squeak.
Llf the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump and differentialpinion shaft. lf both are OK and no cause for the contamination is found, replace the torque converter.
Mlf the lst clutch feed pipe guide in the end cover is scored by the mainshaft. inspect the ball bearing forexcessive movement in the transmission housing. lf oK, replace the end cover as it is dented. The o-rinounder the guide is probably worn.
N' Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged, lf the 4th feed pipe is darrFaged or out of round. replace the end cover.' Replace the mainshaft if the bushing for the l st feed pipe is loose or damaged. lf the 1st feed pipe is dam-aged or out of round, replace it.
oA worn or damaged sprag clutch is mostly a result of shifting the transmission in E!. E, or E positionwhile the wheels rotate in reverse. such as rocking the vehicle in snow.
PInspect the frame for collision damage.
lnspect for damage and wear:
l. Reverse selector gear teeth chamfers.
2. Engagement teeth chamfers of countershaft 4th and reverse gear.
3. Shift fork for scuff marks in center.
4. Differential pinion shaft for wear under pinion gears.
5. Bottom of 3rd clutch for swirl marks.
Replace items 1, 2, 3. and 4 if worn or damaged. lf transmission makes a clicking, grinding, or whirring noise,also replace mainshaft 4th gear, reverse idler gear, and countershaft 4th gear in addition to 1,2, 3, or 4.lf differential pinion shaft is worn, overhaul differential assembly, replace ATF strainer, and thoroughly cjeantransmission, flush torque converter. cooler, and lines,lf bottom of 3rd clutch is swirled and transmission makes gear noise. replace the countershaft and final drivenoear,
Be very careful not to damage the torque converter housing when replacing the main ball bearing. you
may also damage the ATF pump when you torque down the main valve body. This will result in ATF pumpseizure if not detected. Use the Drooer tools.
SInstall the main seal flush with the torque converter housing. lf you push it into the torque converterhousing until it bottoms out, it will block the fluid return passage and result in damage.
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Stall Speed
Test
CAUTION:
. To prevent transmission damage, do not te3t stall speed for mors than 10 s€€onds at a time'
. Do not shift the lever while raising th€ engine spsed.
. Be sure to remove tho pressuro gauge bofore testing stall speed,
1. Before testing, check the transmission fluid level, s€e page 14-160.
2. Engage the parking brake and block all four wheels
3. Connect the tachometer, and start the engane.
4. Make sure the Ay'C switch is OFF
5. After the engine haswarmed upto normal operating temperature (the radiator fan comes on),shiftinto@ position.
6. Fully press the brake pedal and accelerator for 6 to 8 seconds, and note engine speed '
j. A|ow 2 minutes for cooling, then repeat the test in E, E ('97 - 98). E {'99 - 00}, and E positions. Stall speed should
be the same in E, E, E, tr. and E positions
Stall Speed rpm:
Specitication: 2,550 rpm
S€rvice Limit: ?,400 - 2.700 rpm
TROUBLEPROBAELE CAUSE
Stall rpm high in El, E, E, E and E
positions
ATF pump output is low
Clogged ATF strainer
Pressure regulator valve stuck closed
Slipping clutch
Stall rpm high in E positionSlippage of 1st clutch, 1st-hold clutch, or 1st gear one-way clutch
Stall rpm high in E positionSlippage of 2nd clutch
stall rpm high in E! or E positionSlippage of 1st clutch or 1st gear one-way clutch
Stall rpm high in E positionSlippage of 4th clutch
Stall rpm low in [dd, E. E, E, ana E
positions
. Engine output low
. Torque converter one-way clutch slipping
14-159
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Pressure Testing
(cont'd)
Line Proslure, lst Clutch, lst.hold Clutch prsssuro Measuromont
1. Start the engine, and shift to E or @ position.
2. Run the engine at 2,000 rpm, then measure line pressure. Higher pressure may be indicated if measurements aremade in shift lever positions other than E or @ position.
shift to E ('97 - 98) or E ('99 - oo) position and hold the engine at 2.ooo rpm, then measure 1st clutch pressure.
Shift to E position and hold the engine at 2,000 rpm, then measure lst-hotd ctutch Dressure.
LOCK.UP CONTROLSOLENOID VALVEA/B ASSEMBLY
4.
PRESSURESHIFT LEVER
POSmONSYMPTOMPROBABLE CAUSEFLUID PRESSURE
StandaldService Limit
LineEor@No (or low)
line pressure
Torque converter.
ATF pump, pres-
sure regulator,
torque converter
check valve
830 - 880 kPa(8.5 * 9.0 kgflcm,,
120 - '130 psi)
780 kPa
{8.0 kgf/cm,, 'l10 psi)
1st ClutchE (97 - 98)
E ('se - oo)
No or low 1st
pressurelst Clurch
lst-hold
ClutchtrNo or low lst-
hold pressure1st-hold Clutch
14-162
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ATF FEED PIPE,8 x 145 mmATF STRAINERSERVO BODYSERVO SEPARATOR PLATESECONDARY VALVE EODYDOWEL PINSECONDARY SEPARATOR PLATESERVO DETENT BASE ('97 - 98 model3 onlylATF FEED PIP€, 8 x 145 mmATF FEED PIPE,8 x 40 mmATF FEED PIPE. 8 x 62 mmATF FEED PIPE.8 x 112 mmATF FEED PIPE, 8 x 192.5 mmATF FEEO PIPE. I x 105.8 mmSTOP SHAFT BRACKETATF LUBRICATION PLATEATF FEEO PIPEDOWEL PINLOCK-UP VALVE EODYLOCK-UP SEPARATOR PLATEREGULATOR VALVE BODYDOWEL PINCOOLER RELIEF VALVE SPRINGCOOLER RELIEF VALVETOROUE CONVERTER CHECK VALVE SPRINGTOROUE CONVERTER CHECK VALVECONTROL SHAFTOETENT ARM SPRINGOETENT ARMDETENT ARM SHAFTFILTER Replace.CHECK BALLSlST ACCUMULATOR CHOKEO"RING Replace.STATOR SHAFTSTOP SHAFTATF FEED PIPE, I x 112 mmMAIN VALVE BOOYATF PUMP DRIVEN GEAR SHAFTATF PUMP DRIVEN GEAR
TOROUE SPECIFICATIONS
MAIN SEPARATOR PLATEDOWEL PINATF PUMP DRIVE GEARSUCTION PIPE COLLARCOUNTERSHAFT TOROUE CONVERTER HOUSINGBEARINGATF GUIDE PLATELOCK WASHER Replace.CONTROL LEVER ASSEMBLYTOROUE CONVERTER HOUSINGCHANGE SHAFTOIL SEAL Reolace.MAINSHAFT OIL SEAL Reolace.MAINSHAFT TOROUE CONVERT€R HOUSINGBEARINGLOCK.UP CONTROL SOLENOID VALVE A/BFILTER/GASKET Replace.LOCK.UP CONTROL SOLENOID VALVE A/BASSEMBLY
@@@@@
@@@@@@@@
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Bolt/Nut No.Torque ValugSizeRomarks
64
6B
12 N'm (1.2 kgf.m,8.7 lbf.ft)
14 N.m (1.4 kgf.m, 10 lbf.ft)
6x1.0mm
6x1.0mm
14-179
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(41/4.:4.
\7)
1.0)tl
(3]
t9.1q
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69
aa.21
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04
6!)ent00t.@
ATF FEED PIPE, I x 145 mm
ATF STRAINERSERVO BODYSERVO SEPARATOB PLATESECONDABY VALVE BOOYDOWEL PINSECONDARY SEPARATOR PLATE
SERVO DETENT BASE ('98 model onlvl
ATF FEED PIPE, 8 x 145 mmATF FEED PIPE.8 x 40 mmATF FEED PIPE,8 x 62 mmATF FEED PIPE, I x 112 mm
ATF FEED PIPE, 8 x 192.5 mm
ATF FEED PIPE, 8 x 105.8 mm
STOP SHAFT BRACKETATF LUERICATION PLATEATF FEED PIPEDOWEL PINLOCK-UP VALVE BODYLOCK-UP SEPARATOR PLATE
REGULATOR VALVE BOOYDOWEL PINCOOLER RELIEF VALVE SPRINGCOOLER BELIEF VALVETOROUE CONVERTER CHECK VALVE SPRING
TOROUE CONVERTER CHECK VALVECONTNOL SHAFTDETENT ARM SPRINGDETENT ARMDETENT ARM SHAFTFILTER Replace.CHECK BALLS1ST ACCUMULATOR CHOKEO-RING Replace.STATOR SHAFTSTOP SHAFTATF FEED PIPE. 8 x 112 mmMAIN VALVE BODYATF PUMP DRIVEN GEAR SHAFTATF PUMP DRIVEN GEAR
MAIN SEPARATOR PLATE
DOWEL PINATF PUMP DRIVE GEARSUCTION PIPE COLLARCOUNTEBSHAFT TOROUE CONVERTER HOUSING
BEARINGATF GUIDE PLATEATF MAGNETTOBOUE CONVERTER HOUSINGOIL SEAL Beplace.MAINSHAFT OIL SEAL Replace.MAINSHAFT TOROUE CONVERTER HOUSING
BEARINGLOCK.UP CONTROL SOLENOID VALVE A/B
FILTER/GASKET Replace.LOCK-UP CONTROL SOLENOID VALVE A/B
ASSEMELY
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TOROUE SPECIFICATIONS
Bolt/Nut No.Torque ValueSizeRemarks
12 N.m (1.2 kgim,8.7 lbf'tt)6x1.0mm
14-185
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Torque Converter Housing/Valve Body
Removal
NOTE:
. The illustration shows the 4WD automatic transmission; the 2WD is similar.' cleanall parts thoroughry in sorvent or carburetor creaner, and drythem with compressed air.. Blow out all passages.
. When removing the valve bodies, replace the following:- Lock washer- O-ringATF FEED PIPESERVO DETENTBASE137 - 98 models only)
DOWEL PIN
LOCK.UP VALVEBOOY
6x1.0mm'97 - 98 models:2 Bolts'99 - 00 modeb: 1 Bolt
LOCK.UP SEPARAPLATE
REGULAIOR VALVEBOOY
ATFSTRAINER
DOWEL PIN
COOLER RELIEF VALVE
6x1.0mm37 - 98 models:7 Bolts'gg - 0O models:8 Bolts
SERVO BODY137 - 98 modelsl
SERVOSEPARATORPLATE
TOROUE CONVERTERCHECK VALVE
STATOR SHAFT
O.RING
5x1.0mfi3 Bolts
SECONDARYVALVE BODY
MAIN VALVE BODY
6x 1.05 Bolts
ATF PUMP ORIVENGEAR SHAFT
DOWEL PIN
ATF PUMP DRIVENGEAR
\
CONTROL LEVERMOUNTING BOLT{awD)
SECONDARYSEPARATORPLATE
14-190
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1.Remove the control lever mounting bolt trom the
torque converter side of the torque converter hous-
ing. (4WD)
Remove the ATF feed pipes from the servo body,
secondary valve body, lock-up valve body, and main
valve body.
For '97 - 98 models:
Remove the two bolts securing the ATF strainer and
servo detent base, then remove the strainer and the
base.
For'99 - 00 models;
Remove the ATF strainer {one bolt).
4. For'97 - 98 models:
Remove the seven bolts securing the servo body,
then remove the servo body and separator plate'
For'99 - 00 models:
Remove the eight bolts securing the servo body,
then remove the servo body and separator plate'
5. Bemove the three bolts securing the secondary
valve body, then remove the secondary valve body'
stop shaft bracket, and separator plate.
6. Remove the eight bolts securing the ATF lubrication
plate and lock-up valve body, then remove the ATF
lubrication plate, lock-up valve body' and separator
plate.
7. Remove the one bolt securing the regulator valve
body, then remove the regulator valve body'
8. Remove the stator shaft and stop shaft.
9. Remove the detent spring from the detent arm, then
remove the control shaft from the torque converter
houslng.
10. Remove the detent arm and detent arm shaft from
the main valve body.
11. Remove the five bolts securing the main valve
body, then remove the main valve body.
When removing the main valve body, do not let the
eight check balls fall out.
12. Remove the ATF pump driven gear shaft, then
remove the ATF PumP gears.
13. Remove the main separator plate with two dowel
prns.
14, Clean the inlet opening of the ATF strainer thor-
oughly with compressed air, then check that it is in
good condition, and the inlet opening is not clogged
or damaged.
15.
INLET OPENING
Test the ATF strainer by pouring clean ATF through
the inlet opening, and replace it if it is clogged or
damaged.
14-191
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ATF Pump
Inspection
1. Install the ATF pump gears and ATF pump driven
gear shaft in the main valve body Lubricate all
parts with ATF, and install the ATF pump driven
gear with its grooved and chamfered side facing up
MAIN VALVE AOOY
ATF PUMP ORIVE
2. Measure the side clearance of the ATF pump drive
and driven gears.
ATF Pump Gears Side {Radial} Cloarance:
Standard (Newl:
ATF Pump Drive Gear
0.105 - 0.1325 mm {0.004 - 0.005 in}
ATF Pumo Driven Gear
0.035 - 0.0625 mm {0.0014 - 0.0025 in)
MAIN VAI-VE BOOY
fl
L/
ATF PUMPDRIVE GEAR
ATF PUMPDRIVEN GEARInspecl teeth {or wear and damage
Inspect teeth for wear and damage,
3. Remove the ATF pump driven gear shaft Measure
the thrust clearance of the ATF pump driven gear-
to-valve body.
ATF Pumo Drive/Driven Gear Thrust (Axiall Clearance:
Standard (N€w): 0.03 - 0.05 mm {0'001 - 0 002 inl
Service Limit: 0.07 mm 10.003 in)
ATF PUMPORIVEN GEAR
14-195
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