Chevrolet Tracker 1998 User Manual

3 shift control valve, acting against the spring and governor oil

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183581&evc=urm&pubid=76

Document ID# 183581

Print

Detent Downshift, Valves in Second Gear

With the selector lever in the Drive position, detent downshifts are possible by fully depressing the
accelerator pedal. This causes the mechanical linkage to the detent valve to move the detent valve,
cutting off modulator oil to the 3-2 control valve, the 1-2 shift control valve, the 1-2 accumulator valve
and the 2-3 shift control valve.

The mechanical linkage holding the detent valve open allows the detent regulated oil to pass into the
detent oil passage and is directed to the 2­pressure. It is also directed to the 3-2 control valve, acting against the spring, allowing detent oil to pass
through the valve and act on the end of the 2-3 shift control valve to keep the valve bottomed in its bore
against governor oil pressure. Second clutch oil at the 2-3 shift valve is closed off from passing into the
third clutch passages by the detent oil pressure holding the 2-3 shift valve bottomed in its bore.

Summary

The second is clutch on, the low band is on. The valves are in Second Gear position under detent
conditions.

FIGURE Detent Downshift, Valves in Second Gear Position(c)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183581&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183581

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183550&evc=urm&pubid=76

Document ID# 183550

Print

Drive Range, First Gear

When the selector lever is moved to the Drive position on the quadrant, the manual valve is positioned
to allow line oil to enter the drive circuit and is directed to the 1-2 shift valve, the governor, the 1-2
ccumulator valve and the high speed downshift timing valve.

The drive oil directed to the 1-2 accumulator valve is regulated and directed to fill the bottom portion of
the accumulator. The drive oil also passes through an orifice at the high speed downshift timing valve
and passes through the valve to apply the low band servo. Drive oil at the governor is regulated to a
variable pressure which increases with vehicle speed and acts on the ends of the 1-2, 2-3 shift valves,
high speed downshift timing valve, and the vacuum modulator valve.

Summary

The clutches are off, the low band is applied, the transmission is in Drive Range - First Gear.

FIGURE Drive Range, First Gear(c)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183550&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183550

Print

accumulator. As the upper portion of the accumulator fills with second clutch oil, it overcomes the lesser

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183556&evc=urm&pubid=76

Document ID# 183556

Print

Drive Range, Second Gear

As the vehicle increases speed, the governor allows more drive oil to pass through, and this increased
pressure, acting on the end of the 1-2 shift valve, overcomes the 1-2 shift valve spring pressure and
allows drive oil to pass through the valve to feed the second clutch oil passages.

Second clutch oil passes through the second clutch orifice control valve, and is metered to the second
clutch piston to begin to apply the second clutch, while a portion of the oil is directed to the

pressure of 1-2 accumulator oil and spring at the bottom of the accumulator piston, forcing the piston
downward. The upper portion of the accumulator is now filled, allowing full oil pressure to the second
clutch piston for the final apply. The accumulator, therefore, acts as a reservoir to produce a damping
effect for a smooth second clutch apply and the 1-2 shift.

Second clutch oil from the 1-2 shift valve is simultaneously directed to the 2-3 shift valve to be used as
the oil source for the 2-3 shift.

Summary

The second clutch is on, the band is on, the transmission is in Drive Range - Second Gear.

FIGURE Drive Range, Second Gear(c)

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183556&evc=urm&pubid=76

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183556&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183556

Print

3 shift valve. This allows the second clutch oil at the 23 shift valve to be released and pass through the

pressure. The oil passes through the valve and is directed to the top of the low band servo, to act with the

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183558&evc=urm&pubid=76

Document ID# 183558

Print

Drive Range, Third Gear

As vehicle speed increases, the governor allows more oil to pass through, to act against the spring at the
2­valve as third clutch oil, directed to the third clutch piston to apply third clutch. At the same time, third
clutch oil is directed to the 3-2 control valve, acting against the spring and modulator oil, cutting off
modulator oil pressure to the 2-3 shift control valve. Third control oil also is directed to the Reverse and
Low control valve and passes through the valve as servo release oil to the low speed downshift timing
valve. The low speed downshift timing valve is held open against the spring by increased modulator oil

servo piston spring and force the servo piston downward, releasing the low band.

Servo release oil is also directed from near the low reverse control valve through an orifice to the
converter clutch control valve and the solenoid area. Oil will bleed out through the solenoid until the
governor pressure (and vehicle speed) closes the governor switch. The solenoid is then energized to
close the bleed and oil pressure can now move the converter clutch valve to apply the TCC.

Summary

The second clutch is on, the third clutch is on, the band is released. The transmission is in Drive Range ­Third Gear, and as speed increases the TCC is applied.

FIGURE Drive Range, Third Gear(c)

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183558&evc=urm&pubid=76

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183558&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183558

Print

2 shift

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183568&evc=urm&pubid=76

Document ID# 183568

Print

Manual First Gear

When the selector lever is moved to the Low position on the quadrant, the manual valve is positioned to
allow drive oil, intermediate oil and low oil to pass through the valve. Low oil is directed to the 1­valve train which acts with the 1-2 valve spring against governor oil pressure to close off drive oil from
passing into the second clutch passage. At the same time, low oil is directed to the reverse and low
control valve and acts against the spring to allow detent regulated oil at the reverse and low control
valve to flow to the 2-3 shift valve, which is bottomed in its bore by intermediate oil pressure and the
valve spring. The detent oil passes through the 2-3 shift valve and into the third clutch passages to apply
the third clutch and to close off modulator oil pressure from the 3-2 control valve to the 2-3 shift control
valve. Third control oil is also directed to the reverse and low control valve, which is held open against
its spring by low oil pressure, and closes off the source of supply to the servo release passage, to allow
the servo to apply the low band. Intermediate oil seats the check ball at the reverse passage at the
pressure regulator boost valve cavity and continues to the pressure regulator valve to increase oil
pressure in the circuit.

Summary

The third clutch is on, the band is on. The transmission is in Manual First.

FIGURE Manual First Gear(c)

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183568&evc=urm&pubid=76

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183568&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183568

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183562&evc=urm&pubid=76

Document ID# 183562

Print

Manual Second Gear

The selector lever is moved to the Intermediate position on the quadrant, the manual valve is positioned
to allow drive oil and intermediate oil to pass through the valve. Intermediate oil is directed to the
pressure regulator boost control cavity, seating the check ball at the reverse passage. Intermediate oil is
then directed to the pressure regulator valve downward to increase the oil pressure in the circuit. At the
same time, the intermediate oil from the manual valve is directed to the 2-3 shift valve train closing off
the supply of third clutch oil in the circuit, which is exhausted through the reverse and low control valve.

Summary

With third clutch oil exhausted, the third clutch is off, the second clutch is on, the low band servo is
applied. The transmission is in Manual Second.

FIGURE Manual Second Gear(c)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183562&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183562

Print

2 accumulator valve, and the

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=247691&evc=urm&pubid=76

Document ID# 247691

Print

Park or Neutral - Engine Running

Whenever the engine is running with the selector in Neutral, oil is pulled from the sump into the oil
pump and is dispensed from the pump under pressure. Line oil is directed to the vacuum modulator
valve, to the pressure regulator valve and to the manual valve. The converter is fed through the pressure
regulator valve, the return oil from the converter being directed through the cooler and back into the
transmissions lubricating system.

Line oil directed to the vacuum modulator valve becomes regulated to modulator oil and acts on the
pressure regulator boost valve, the low speed downshift timing valve, the 1­detent valve. The modulator oil passes through the detent valve to act on the 1-2 shift control valve, the
3-2 control valve and the 2-3 shift control valve. Line oil passes through the manual valve, and is
regulated at the detent pressure regulator valve before being directed to the Reverse and Low control
valve.

Summary

The converter is filled, the clutches and low band are released. The transmission is in Park or Neutral.

FIGURE Park or Neutral - Engine Running(c)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=247691&evc=urm&pubid=76

<- Back Forward ->

Document ID# 247691

Print

When the selector lever is moved to the Reverse position on the quadrant, the manual valve is positioned

to allow reverse oil to pass through the manual valve into the reverse oil passage. The reverse oil applies

3 shift valve. The detent regulated oil passes

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183575&evc=urm&pubid=76

Document ID# 183575

Print

Reverse

the reverse clutch. At the same time, reverse oil is directed to the pressure regulator boost control valve
cavity to seat the check ball and prevent reverse oil passing into the intermediate oil passage. It is then
directed to the pressure regulator boost valve forcing the pressure regulator valve downward to increase
oil pressure in the circuit.

Reverse oil is also directed to act on the end of the reverse and low control valve against the spring to
allow detent regulated oil to pass through the valve to the 2­through the 2-3 shift valve and into the third clutch oil passages to apply the third clutch. The third
clutch oil also acts on the end of the 3-2 control valve against the spring and modulator oil pressure,
closing off the supply of modulator oil to the 2-3 shift control valve. Third clutch oil at the reverse and
low control valve is closed off from passing through the valve, and into the servo release passage.

Summary

The reverse clutch is on and the third clutch is on. The transmission is in Reverse Range.

FIGURE Reverse(c)

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183575&evc=urm&pubid=76

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=183575&evc=urm&pubid=76

<- Back Forward ->

Document ID# 183575

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184181&pubid=76&evc=urm

FIGURE Component Locator View(c)

Document ID# 184181

Print

(1) Torque Converter Housing
(2) Converter Clutch Torque Converter
(3) Oil Pump
(4) Case
(5) Second Clutch
(6) Third Clutch
(7) Planetary Gear Set
(8) Reaction Sun Gear Assembly
(9) Low Band

(10) Governor Assembly

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184181&pubid=76&evc=urm

(11) Extension Housing
(12) Speedometer Drive Gear
(13) Governor Hub
(14) Parking Pawl
(15) Parking Lock Actuator
(16) Oil Pan
(17) Servo Cover
(18) Reaction Sun Gear
(19) Input Sun Gear
(20) Sprag Assembly
(21) Control Valve Assembly
(22) Detent Lever and Actuator Rod
(23) Manual Valve and Link
(24) Reverse Clutch Piston

<- Back Forward ->

Document ID# 184181

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184185&pubid=76&evc=urm

Document ID# 184185

FIGURE Case and Associated Parts (1 of 2)(c)

Print

(201) Converter Assembly
(202) Bolt, Converter Housing to Oil Pump
(203) Bolt, Converter Housing to Case
(204) Seal, Converter Housing
(205) Housing, Converter
(207) Gasket, Oil Pump
(208) Plate, Oil Pump Wear
(209) Gear Pump Driven
(210) Gear Pump Drive

(211) Pin, Oil Pump Boost Sleeve Retainer

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184185&pubid=76&evc=urm

(212) Sleeve, Oil Pump Boost
(213) Valve, Oil Pump Boost
(214) Seat, Pressure Regulator Valve Spring
(214) Seat, Pressure Regulator Valve Spring
(215) Spring, Pressure Regulator Valve
(216) Valve, Pressure Regulator
(217) Valve, Clutch Control
(218) Spring, Clutch Control Valve
(219) Plug, Clutch Control Valve
(220) Pin, Clutch Control Valve
(222) Body, Oil Pump
(223) Seal, Oil Pump (Outer)
(224) Washer, Selective Thrust
(225) Ring, 2nd Clutch Oil Seal
(226) Seal, Reverse Clutch Piston (Inner)
(227) Seal, Reverse Clutch Piston (Outer)
(228) Piston, Reverse Clutch
(229) Spring, Clutch Piston Return
(230) Seat, Reverse Clutch Piston Return Spring
(231) Ring, Clutch Piston Ring Seat Retainer
(232) Plate, Reverse Clutch Cushion
(233) Plate, Reverse Clutch (Flat Steel)
(234) Plate, Reverse Clutch (Lined)
(236) Plate, Reverse Clutch Pressure

<- Back Forward ->

Document ID# 184185

Print

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184189&pubid=76&evc=urm

Document ID# 184189

FIGURE Case and Associated Parts (2 of 2)(c)

Print

(101) Case, Transmission
(105) Connector, Electrical Assembly
(108) Spring, Detent Valve
(109) Seat, Spring Detent Valve
(110) Valve, Detent
(111) Sleeve, Detent Valve
(112) Pin, Detent Valve
(113) Seal, Detent Valve Sleeve
(114) Sleeve, Modulator Valve

(115) Valve, Modulator

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184189&pubid=76&evc=urm

(116) Plunger, Modulator
(117) Seal, Modulator
(118) Modulator, Vacuum Assembly
(119) Case Extension Housing
(121) Spring, Parking Lock Pawl
(122) Pawl, Parking Lock
(123) Actuator, Parking Lock Pawl
(125) Seal Assembly, Case Extension Oil
(126) Gasket, Case Extension to Case
(127) Bolt, Case Extension to Case
(128) Control Valve Body Assembly
(129) Gasket, Spacer Plate
(130) Plate, Spacer
(132) Gasket, Spacer Plate to Case
(137) Switch, Governor Pressure
(138) Valve, Manual
(139) Link, Manual Valve
(140) Lever, Detent
(141) Shaft, Manual
(142) Seal, Manual Shaft
(143) Pin, Manual Shaft
(144) Nut, Manual Shaft
(145) Roller, Detent
(146) Plate, Reinforcement
(147) Solenoid and Bracket Assembly
(148) Wiring Harness
(149) Pipe, Solenoid to Valve Body
(150) Pipe, Solenoid to Oil Pump
(151) Seal, Solenoid Pipe
(152) Bolt, Servo Cover and Reinf. Plate
(152) Bolt, Servo Cover and Reinf. Plate
(152) Bolt, Servo Cover and Reinf. Plate
(153) Gasket, Transmission Oil Filter
(154) Filter, Transmission Oil
(155) Bolt, Control Valve Body Assembly to Case
(155) Bolt, Control Valve Body Assembly to Case
(155) Bolt, Control Valve Body Assembly to Case
(156) Spring, Servo Piston Return
(157) Rod, Servo Piston Apply
(158) Sleeve, Servo Piston Adjusting

(159) Retainer, Servo Piston Cushion Spring

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184189&pubid=76&evc=urm

(160) Seat, Servo Piston Cushion Spring
(161) Spring, Servo Piston Cushion
(162) Piston, Servo
(163) Ring, Servo Piston Seal
(164) Screw, Servo Piston Adjusting
(165) Nut, Servo Piston Adjusting Screw
(166) Piston Assembly, Servo
(167) Ring, Servo Piston Retainer
(168) Gasket, Servo Piston Cover
(169) Cover, Servo Piston
(170) Gasket, Transmission Oil Pan
(171) Magnet, Transmission Oil Pan
(172) Pan, Transmission Oil
(173) Bolt, Transmission Oil Pan to Case
(176) Switch, Oil Pressure
(183) Washer
(184) Clips
(185) Vent, Rear
(193) Ball, Check
(601) Seal, Speedometer Driven Gear Guide
(602) Gear, Speedometer Driven
(603) Guide, Speedometer Driven Gear
(604) Bushing, Speedometer Driven Gear Guide
(605) Bolt, Speedometer Driven Gear Bracket
(606) Washer, Speedometer Driven Gear Bracket
(607) Bracket, Speedometer Driven Gear Guide
(608) Clip, Retaining

<- Back Forward ->

Document ID# 184189

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184193&pubid=76&evc=urm

Document ID# 184193

FIGURE Control Valve Body Assembly(c)

Print

(138) Valve, Manual
(139) Link, Manual Valve
(500) Body, Control Valve
(501) 1-2 Accumulator Piston Assembly
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(502) Pin, Retaining
(503) Plug, 1-2 Accumulator Valve
(504) Valve, 1-2 Accumulator
(505) Spring, 1-2 Accumulator Valve

(506) Spring, Downshift timing valve (High Speed)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184193&pubid=76&evc=urm

(507) Valve, Downshift timing (High Speed)
(509) Valve, Downshift timing (Low Speed)
(510) Spring, Downshift timing Valve (Low Speed)
(511) Spring, Manual Low Control Valve
(512) Valve, Manual Low Control
(513) Valve, Reverse Control
(514) Valve, 1-2 Shift
(515) Spring, 1-2 Shift Control Valve
(516) Valve, 1-2 Shift Control
(517) Spring, 1-2 Shift Control Valve
(518) Sleeve, 1-2 Shift Control Valve
(519) Valve, 2-3 Shift
(520) Seat, 2-3 Shift Control Valve Spring
(521) Spring, 2-3 Shift Control Valve
(522) Valve, 2-3 Shift Control
(523) Sleeve, 2-3 Shift Control Valve
(524) Valve, 3-2 Control
(525) Spring, 3-2 Control Valve
(526) Plug, 3-2 Control Valve
(527) Valve, Detent Pressure Regulator
(528) Spring, Detent Pressure Regulator Valve
(530) Valve, Intermediate

<- Back Forward ->

Document ID# 184193

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184199&pubid=76&evc=urm

FIGURE Second Clutch Assembly(c)

Document ID# 184199

Print

(229) Spring, Clutch Piston Return
(303) Drum, 2nd Clutch
(304) Seal, 2nd Clutch Piston (Inner)
(305) Seal, 2nd Clutch Piston (Outer)
(306) Piston, 2nd Clutch
(308) Seat, 2nd Clutch Piston Spring Retainer
(309) Ring, Clutch Piston Spring Seat Retainer
(311) Plate, 2nd Clutch (Waved)
(312) Plate, 2nd Clutch (Lined)
(313) Plate, 2nd Clutch (Steel)
(314) Spacer, 2nd Clutch
(315) Ring, Ring Gear Retainer
(315) Ring, Ring Gear Retainer
(316) Gear, Ring

<- Back Forward ->

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184199&pubid=76&evc=urm

Document ID# 184199

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184207&pubid=76&evc=urm

Document ID# 184207

FIGURE Third Clutch and Planetary Carrier Assembly(c)

Print

(229) Spring, Clutch Piston Return
(310) Washer, 2nd to 3rd Clutch Thrust
(317) Washer, 2nd to 3rd Clutch Thrust
(318) Seal, Input Shaft
(319) Shaft, Input
(320) Seal, 3rd Clutch Piston (Outer)
(321) Seal, 3rd Clutch Piston (Inner)
(322) Piston, 3rd Clutch
(324) Seat, 3rd Clutch Piston Spring Retainer

(325) Ring, Clutch Piston Spring Seat Retainer

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184207&pubid=76&evc=urm

(326) Plate, 3rd Clutch (Steel)
(327) Plate, 3rd Clutch (Lined)
(328) Plate, 3rd Clutch (Waved)
(329) Washer, Input Shaft to Sun Gear
(330) Bearing, Input Sun Gear
(330) Bearing, Input Sun Gear
(331) Gear, Input Sun
(332) Washer, Input Shaft to Sun Gear
(333) Sprag Assembly, Complete
(335) Ring, Race Retainer
(336) Race, 3rd Clutch Input Sprag
(337) Washer, Input Gear to Carrier
(338) Planetary Carrier Assembly
(339) Clip, Speedometer Drive Gear Retaining
(340) Gear, Speedometer Drive
(341) Ring, Retainer

<- Back Forward ->

Document ID# 184207

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184212&pubid=76&evc=urm

Document ID# 184212

FIGURE Reaction Sun Gear and Governor(c)

Print

(401) Bearing, Reaction Sun Gear
(401) Bearing, Reaction Sun Gear
(403) Drum and Gear Reaction Sun Assembly
(404) Band, Low
(406) Ring, Governor Hub Seal
(407) Governor Assembly
(408) Hub, Governor
(409) Screen, Governor Oil
(410) Gasket, Governor
(411) Retainer, Secondary Valve
(412) Body, Governor
(413) Valve, Secondary
(414) Spring, Secondary
(415) Valve, Primary
(416) Bolt, Governor

(417) Ring, Governor Hub Retainer

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184212&pubid=76&evc=urm

<- Back Forward ->

Document ID# 184212

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184215&pubid=76&evc=urm

FIGURE Bushing Locations(c)

Document ID# 184215

Print

(106) Sleeve, Reaction Sun
(107) Bushing, Case
(124) Bushing, Case Extension
(206) Bushing, Converter Housing
(238) Bushing, Oil Pump Hub (Front)
(239) Bushing, Oil Pump Body (Rear)

<- Back Forward ->

Document ID# 184215

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184217&pubid=76&evc=urm

FIGURE Seal Locations(c)

Document ID# 184217

Print

(125) Seal Assembly, Case Extension Oil
(204) Seal, Converter Housing
(223) Seal, Oil Pump (Outer)
(225) Seal, 2nd Clutch Oil
(226) Seal, Reverse Clutch Piston (Inner)
(227) Seal, Reverse Clutch Piston (Outer)
(304) Seal, 2nd Clutch Piston (Inner)
(305) Seal, 2nd Clutch Piston (Outer)
(318) Seal, Input Shaft O-Ring
(320) Seal, 3rd Clutch Piston (Outer)
(321) Seal, 3rd Clutch Piston (Inner)
(406) Seal, Governor Hub

<- Back Forward ->

Document ID# 184217

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184218&pubid=76&evc=urm

Document ID# 184218

FIGURE Washer and Bearing Locations(c)

Print

(224) Washer, Selective Thrust
(310) Washer, 2nd to 3rd Clutch Thrust
(317) Washer, 2nd to 3rd Clutch Thrust
(329) Washer, Input Shaft to Sun Gear
(330) Bearing, Input Sun Gear
(330) Bearing, Input Sun Gear
(337) Washer, Input Gear to Carrier
(401) Bearing, Reaction Sun Gear
(401) Bearing, Reaction Sun Gear

<- Back Forward ->

Document ID# 184218

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184220&pubid=76&evc=urm

Document ID# 184220

FIGURE Converter Housing Fluid Passages(c)

Print

(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust
(1) Exhaust

(1) Exhaust

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184220&pubid=76&evc=urm

(2) Converter Out
(2) Converter Out
(3) 2nd Clutch
(3) 2nd Clutch
(4) 3rd Clutch
(4) 3rd Clutch
(5) Modulator
(6) Boost
(7) Suction
(7) Suction
(7) Suction
(8) Line
(8) Line
(8) Line
(8) Line

(9) Reverse Clutch
(10) Converter In
(10) Converter In
(10) Converter In
(10) Converter In
(11) Converter In/Out
(11) Converter In/Out
(11) Converter In/Out
(11) Converter In/Out

<- Back Forward ->

Document ID# 184220

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184222&pubid=76&evc=urm

FIGURE Wear Plate Fluid Passages(c)

Document ID# 184222

Print

(1) Converter In

(1) Converter In

(1) Converter In

(1) Converter In

(2) Converter In/Out

(2) Converter In/Out

(2) Converter In/Out

(2) Converter In/Out

(3) Line

(3) Line

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184222&pubid=76&evc=urm

(3) Line

(3) Line

(4) Exhaust

(4) Exhaust

(4) Exhaust

(4) Exhaust

(4) Exhaust

(5) Reverse Clutch

(5) Reverse Clutch

(6) Suction

(6) Suction

(7) Boost

(8) Modulator

(8) Modulator

(9) 3rd Clutch

(9) 3rd Clutch
(10) 2nd Clutch
(10) 2nd Clutch
(11) Intermediate
(12) Converter Out
(13) Vent

<- Back Forward ->

Document ID# 184222

Print

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184225&pubid=76&evc=urm

FIGURE Pump Passages(c)

Document ID# 184225

Print

(1) Converter Out

(1) Converter Out

(1) Converter Out

(1) Converter Out

(1) Converter Out

(1) Converter Out

(2) Converter In/Out

(2) Converter In/Out

(2) Converter In/Out

(2) Converter In/Out

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184225&pubid=76&evc=urm

(3) Converter In

(3) Converter In

(3) Converter In

(4) Converter Clutch Control

(4) Converter Clutch Control

(4) Converter Clutch Control

(5) Reverse Clutch

(5) Reverse Clutch

(6) Line

(6) Line

(6) Line

(6) Line

(6) Line

(7) Suction

(7) Suction

(7) Suction

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(8) Exhaust

(9) Boost
(10) Modulator
(10) Modulator
(11) 3rd Clutch
(11) 3rd Clutch
(12) 2nd Clutch
(12) 2nd Clutch
(13) Intermediate
(14) Vent

<- Back Forward ->

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184225&pubid=76&evc=urm

Document ID# 184225

Print

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184228&pubid=76&evc=urm

FIGURE Valve Body Passages(c)

Document ID# 184228

Print

(1) Regulator

(1) Regulator

(1) Regulator

(1) Regulator

(1) Regulator

(2) 1-2 Accumulator

(3) Governor

(3) Governor

(3) Governor

(3) Governor

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184228&pubid=76&evc=urm

(3) Governor

(4) Intermediate

(4) Intermediate

(4) Intermediate

(5) Drive

(5) Drive

(5) Drive

(5) Drive

(5) Drive

(6) WOF

(7) 3rd Clutch

(7) 3rd Clutch

(7) 3rd Clutch

(8) Servo Apply

(9) Low

(9) Low

(9) Low

(9) Low

(9) Low
(10) Exhaust
(10) Exhaust
(10) Exhaust
(10) Exhaust
(10) Exhaust
(10) Exhaust
(11) Servo Release
(11) Servo Release
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(12) Modulator
(13) Line
(13) Line
(13) Line

(14) Reverse

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184228&pubid=76&evc=urm

(14) Reverse
(14) Reverse
(15) Suction
(16) Detent
(16) Detent
(16) Detent
(17) 2nd Clutch
(17) 2nd Clutch
(17) 2nd Clutch
(19) 2-3 Exhaust

<- Back Forward ->

Document ID# 184228

Print

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184231&pubid=76&evc=urm

Document ID# 184231

FIGURE Valve Body Transfer Plate Passages(c)

Print

(1) Low

(1) Low

(1) Low

(1) Low

(2) Servo Apply

(2) Servo Apply

(3) Exhaust

(3) Exhaust

(3) Exhaust

(3) Exhaust

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184231&pubid=76&evc=urm

(3) Exhaust

(3) Exhaust

(4) Drive

(4) Drive

(4) Drive

(5) Modulator

(5) Modulator

(5) Modulator

(5) Modulator

(6) Governor

(6) Governor

(6) Governor

(6) Governor

(6) Governor

(7) Regulator

(7) Regulator

(7) Regulator

(7) Regulator

(7) Regulator

(8) Intermediate

(8) Intermediate

(9) 1-2 Accumulator

(9) 1-2 Accumulator
(10) 2nd Clutch
(10) 2nd Clutch
(10) 2nd Clutch
(10) 2nd Clutch
(10) 2nd Clutch
(10) 2nd Clutch
(11) Detent
(11) Detent
(12) Modulator Detent
(12) Modulator Detent
(12) Modulator Detent
(13) Modulator Reverse
(13) Modulator Reverse
(14) Reverse
(14) Reverse
(14) Reverse
(14) Reverse

(15) Suction

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184231&pubid=76&evc=urm

(16) Line
(16) Line
(16) Line
(17) Servo Release
(17) Servo Release
(17) Servo Release
(17) Servo Release
(17) Servo Release
(17) Servo Release
(18) 2-3 Exhaust
(18) 2-3 Exhaust
(18) 2-3 Exhaust
(19) 3rd Clutch

<- Back Forward ->

Document ID# 184231

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184232&pubid=76&evc=urm

FIGURE Case Passages(c)

Document ID# 184232

Print

(1) Low
(1) Low
(1) Low
(2) Servo Release
(2) Servo Release
(2) Servo Release
(3) Servo Apply
(3) Servo Apply
(4) Exhaust

(4) Exhaust

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184232&pubid=76&evc=urm

(4) Exhaust
(5) Drive
(5) Drive
(5) Drive
(6) Governor
(6) Governor
(6) Governor
(6) Governor
(7) Modulator
(7) Modulator
(7) Modulator
(7) Modulator
(8) Line
(8) Line
(8) Line
(8) Line
(9) Modulator Detent
(9) Modulator Detent

(9) Modulator Detent
(10) Detent
(10) Detent
(10) Detent
(11) Regulator
(11) Regulator
(12) 1-2 Accumulator
(13) 2nd Clutch
(13) 2nd Clutch
(13) 2nd Clutch
(13) 2nd Clutch
(14) Intermediate
(15) 3rd Clutch
(16) 2-3 Exhaust
(17) Suction
(18) Reverse
(18) Reverse

(193) Ball Check Valve

<- Back Forward ->

Document ID# 184232

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=204187&pubid=52&cellId=5542

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 204187

Holding Fixture Installation

Print

Tools Required

J 8763-02 Holding Fixture
J 3289-20 Holding Fixture Base

Notice

Excessive tightening of the holding fixture onto the transmission assembly could cause damage
and inhibit disassembly.

1. Install J 8763-02 onto the transmission assembly.

2. Install the transmission assembly and J 8763-02 into J 3289-20 and use the fixture pin to lock the
holding fixture in place.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 204187

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184336&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184336

Torque Converter Assembly Removal

Print

Remove the Transmission Torque Converter (201).

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184336

Print

5.

Place the drain pan (3) or a suitable container under the transmission fluid pan (2).

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197009&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 197009

Transmission Oil Pan Removal

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

Print

2. If the vehicle is equipped with four-wheel drive, place reference marks (1) on the propeller shaft
pinion flange and the front differential pinion flange (3) of the transfer case to the front
differential propeller shaft. Refer to Propeller Shaft Replacement in Propeller Shaft.

3. Remove the following components in order to separate the pinion flange yoke (2) from the front
differential pinion flange (3) (four-wheel drive models):

A. The 4 pinion flange bolts

B. The 4 pinion flange nuts

4. Position and support the transfer case to the front differential propeller shaft away from the
transmission fluid pan.

Important

Removing the propeller shaft from the transfer case will cause fluid loss with four-wheel drive
models.

Notice

This transmission is not equipped with a fluid pan drain plug. Be sure to place a drain pan, or
other suitable container, under the transmission fluid pan before loosening the fluid pan seal.
Transmission fluid will begin to drain out immediately after the fluid pan seal is loosened.

6. Remove the 9 transmission fluid pan bolts around the forward perimeter of the transmission fluid

Loosen the 3 transmission fluid pan bolts in the rear of the transmission fluid pan (2), allowing the

Important

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197009&pubid=52&evc=urm&cellId

...

pan (2).

7.
transmission fluid pan to partially drain.

8. Remove the 3 remaining transmission fluid pan bolts.

9. Remove the transmission fluid pan (2).

10. Remove the transmission fluid pan gasket.

11. Drain the remaining fluid from the transmission fluid pan (2) into the drain pan (3).

12. Remove the three fluid filter screen bolts (2) from the valve body.

13. Remove the fluid filter screen (1) and the fluid filter screen gasket.

A small amount of clutch material in the bottom of the transmission fluid pan (1) is a normal

condition and is consistent with normal transmission wear. The bottom of the transmission pan (1)

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197009&pubid=52&evc=urm&cellId

...

is equipped with a magnet (2) that will collect minute metal filings. However, transmission
disassembly and inspection are indicated if large amounts of clutch material, metal shavings or
other foreign matter are present.

14. Clean the following components:
The fluid filter screen Use solvent in order to clean the fluid filter screen and air dry.
The transmission fluid pan (1)
The transmission fluid pan magnet (2)
The fluid filter screen gasket mating surfaces

15. Inspect the fluid filter screen for any tears or other damage. Replace the fluid filter screen if

necessary.

<- Back Forward ->

Document ID# 197009

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184351&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184351

Transmission Oil Filter Assembly Removal

Print

1. Remove the oil filter bolts (155).

2. Remove the oil filter (154).

3. Remove the oil filter gasket(153).

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184351

Print

10.

Remove the TCC solenoid (4) from the reinforcement plate.

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197007&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 197007

Control Valve Body Assembly Removal

Caution

Before servicing any electrical component, the ignition key must be in the OFF or LOCK
position and all electrical loads must be OFF, unless instructed otherwise in these
procedures. If a tool or equipment could easily come in contact with a live exposed electrical
terminal, also disconnect the negative battery cable. Failure to follow these precautions may
cause personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.

2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General
Information.

3. Remove the transmission fluid pan and gasket from the transmission. Refer to Transmission Oil

Pan Removal in this section.

4. Remove the 3 valve body bolts.

Print

5. Remove the fluid filter screen (1) and gasket.

6. Remove the torque converter clutch (TCC) solenoid pipes (2) from the following components:

The TCC solenoid (4)
The transmission fluid pump
The valve body

7. Disconnect the electrical connector (3) from the TCC solenoid (4).

8. Disconnect the electrical connectors (3) from the fluid pressure switch.

9. Remove the 2 TCC solenoid bolts.

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197007&pubid=52&evc=urm&cellId

...

11. Remove the 6 reinforcement plate bolts.

12. Remove the reinforcement plate (1) from the transmission case.

13. Remove the 4 piston servo cover bolts.

14. Remove the piston servo cover (3) and the piston servo cover gasket.

Notice

When lowering the control valve body assembly, disconnect the manual valve link from the
parking lock and range selector lever. Use caution to avoid losing the check ball in the
transmission case passage. When the valve body is removed, the check ball should drop out of the
case passage onto the top of the valve body.

15. Remove the following components from the transmission case:
The 9 valve body bolts (2)
The manual detent roller
The valve body
The transfer plate
The transfer plate gaskets
One check ball

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 197007

Print

3.

Remove the servo piston retainer ring (167).

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184361&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184361

Forward Band Servo Piston Removal

Print

Tools Required

J 23075 Third Clutch Servo Piston Spring Compressor

1. Install J 23075 onto the servo piston with the tool offset facing the rear of the transmission case.

2. Compress the servo piston spring (166).

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184361&pubid=52&evc=urm&cellId

...

4. Slowly release the pressure on the servo piston assembly (166).

5. Remove J 23075 .

6. Remove the servo piston assembly (166).

7. Remove the return spring (156).

8. The servo apply rod (157).

9. Inspect the servo apply rod for:
nicks
burrs
scoring

<- Back Forward ->

Document ID# 184361

1998 Chevrolet/Geo Tracker - 4WD

Print

2.

Disconnect the vacuum hose and pipe (1) from the vacuum modulator (2).

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197002&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 197002

Vacuum Modulator Valve Assembly Removal

Removal Procedure

Print

Tools Required

J 23100 Vacuum Modulator Wrench

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General

Information.

A.

Remove the vacuum modulator plunger (3) from the vacuum modulator (1).

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197002&pubid=52&evc=urm&cellId

...

3. Use the J 23100 in order to remove the vacuum modulator (1) and the plunger (3) from the

transmission.

Inspection Procedure

Tools Required

J 23738-A Hand Operated Vacuum Pump

1. Perform the following procedure in order to inspect the vacuum modulator (1) for leakage:

B. Inspect for fluid that drains out of the vacuum modulator (1).

Replace the vacuum modulator (1) if transmission fluid is present in the vacuum modulator.

ring (2) for cuts or other damage. Replace the vacuum modulator

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=197002&pubid=52&evc=urm&cellId

...

C.

2. Perform the following procedure in order to use the J 23738-A when inspecting the vacuum

modulator for leakage:

A. Attach the J 23738-A to the vacuum fitting on the rear of the vacuum modulator (1).

B. Apply 67 kPa (20 in Hg) of vacuum to the vacuum modulator.
C. Observe the gauge at the top of the J 23738-A .

D. Replace the vacuum modulator (1) if the J 23738-A indicates a vacuum loss.

3. Inspect the vacuum modulator O-

O-ring as necessary.

<- Back Forward ->

Document ID# 197002

1998 Chevrolet/Geo Tracker - 4WD

Print

2.

Remove the detent valve sleeve (111) and seal (113).

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184365&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184365

Detent Valve Assembly Removal

Print

1. Remove the detent valve retaining pin (112) using diagonal pliers. Insert a wire into the center of

the spring pin to prevent collapsing.

3. Remove the detent valve (110).

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184365&pubid=52&evc=urm&cellId

...

4. Remove the detent valve spring (108).

5. Inspect the detent valve sleeve for:
nicks
scratches
scoring

6. Inspect the detent valve and the valve spring for:
nicks
scratches
scoring

<- Back Forward ->

Document ID# 184365

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196996&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 196996

Speedometer Driven Gear Removal

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General

Information.

Print

2. Remove the speedometer cable (2) from the speedometer driven gear case.

3. Remove the speedometer guide bracket bolt (1) and the speedometer guide bracket from the

extension housing.

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196996&pubid=52&evc=urm&cellId

...

4. Remove the speedometer driven gear case (2) from the extension housing.

5. Remove the speedometer driven gear (1) from the speedometer driven gear case (2).

6. Remove the lip seal from the speedometer driven gear case (2).

7. Inspect the speedometer driven gear (1) for excessive wear. Replace the gear, if necessary.

<- Back Forward ->

Document ID# 196996

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196994&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 196994

Extension Housing Removal

Print

Tools Required

J 23062-14 Extension Housing Bushing Remover and Installer
J 8092 Driver Handle

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General

Information.

2. Place a reference mark on the pinion flange yoke of the rear propeller shaft and the differential

pinion flange to ensure correct rear propeller shaft installation. Refer Propeller Shaft Replacement
in Propeller Shaft.

3. Remove the following components from the vehicle:
Four bolts
Four nuts
The propeller shaft

4. Drain the transmission fluid. Refer to Transmission Oil Pan Removal in this section.

5. Remove the transmission fluid pan and the transmission fluid pan gasket.

6. Drain the transmission fluid. Refer to Transmission Oil Pan Removal in this section.

Notice

Use the correct fastener in the correct location. Replacement fasteners must be the correct part
number for that application. Fasteners requiring replacement or fasteners requiring the use of
thread locking compound or sealant are identified in the service procedure. Do not use paints,
lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These
coatings affect fastener torque and joint clamping force and may damage the fastener. Use the
correct tightening sequence and specifications when installing fasteners in order to avoid damage
to parts and systems.

7. Install the transmission fluid pan and a new gasket onto the transmission in order to provide

support for the transmission assembly. Use 12 transmission fluid pan bolts in order to secure the
transmission fluid pan.

Tighten

Tighten the transmission fluid pan bolts to 13 N·m (115 lb in).

16.

Remove the following components from the transmission case:

Page

2

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196994&pubid=52&evc=urm&cellId

...

8. Disconnect the speedometer cable (2) from the speedometer driven gear case.

9. Remove the following components from the transmission:
The speedometer guide bracket bolt (1)
The speedometer guide bracket

10. Remove the speedometer driven gear case from the transmission extension housing. Remove the
two exhaust pipe bracket bolts and nuts.

11. Remove the exhaust pipe bracket from the extension housing and the catalytic converter.

12. Support the transmission with a suitable hydraulic jack.

13. Remove the 2 rear transmission mount bolts.

14. Remove the 4 rear transmission crossmember bolts.

15. Remove the rear transmission crossmember from the vehicle.

housing (1).

Page

3

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196994&pubid=52&evc=urm&cellId

...

The 7 extension housing bolts (2)
The extension housing (1)
The extension housing gasket

17. Remove the following items from the extension housing (1):

The parking lock pawl (2)
The parking lock pawl shaft (3)
The parking lock pawl return spring (4)

18. Use the J 23129 and the J 6125-B in order to remove the extension housing seal from the
extension housing.

19. Use the J 23062-14 and a J 8092 in order to remove the extension bearing from the extension

20. Clean the extension housing and the transmission case mating surfaces.

Page

4

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196994&pubid=52&evc=urm&cellId

...

21. Inspect the extension housing for cracks or other damage. Replace the extension housing, if
necessary.

<- Back Forward ->

Document ID# 196994

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184387&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184387

Extension Housing Disassemble

Print

1. Remove the parking lock pawl (122).

2. Remove the parking lock pawl spring (121) from the extension housing.

3. Inspect the parking lock pawl and pawl spring for damage.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184387

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=196978&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 196978

Speedometer Drive Gear Removal

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General
Information.

2. Remove the extension housing from the transmission case. Refer to Extension Housing Removal
in this section.

Print

3. Remove the 2 speedometer drive gear retaining rings (1) from the transmission output shaft (3).

4. Remove the speedometer drive gear (2).

5. Inspect the speedometer drive gear (2) for abnormal wear or damage. Replace the drive gear, if
necessary.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 196978

Print

<- Back Forward ->

Page

1

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=214921&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 214921

Governor Body Removal

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle Lifting and
Jacking in General Information.

2. Remove the extension housing from the transmission case (two-wheel drive models). Refer to

Extension Housing Removal in this section.

3. Remove the transfer adapter case from the transmission case (four-wheel drive models). Refer to

Transfer Case Mount Replacement in Driveline/Axle.

Print

4. Remove the following items from the transmission output shaft (3):

The two speedometer drive gear retaining rings (1)
The speedometer drive gear (2)

8.

Remove the governor assembly (1) and the governor assembly gasket.

Page

2

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=214921&pubid=52&evc=urm&cellId

...

5. Install the governing ring (417) onto the transmission output shaft.

6. Install the governor hub (408).

7. Remove the governor assembly bolts (2) from the governor hub (3).

11.

Clean all of the governor components with solvent. Allow the components to air dry.

Page

3

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=214921&pubid=52&evc=urm&cellId

...

9. Remove the governor fluid screen (2).

10. Remove the following from the governor body (412):
The secondary valve retainer (411)
The secondary spring (414)
The secondary valve (413)
The primary valve (415)

12.

Inspect the governor hub seal rings (406) for cuts or other damage. Replace the rings as necessary.

Inspect the primary (415) and the secondary (413) valves for nicks and burs. Replace the governor

Page

4

of 4Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=214921&pubid=52&evc=urm&cellId

...

13.

assembly as necessary

14. Inspect the fluid passages and valve bores in the governor body for nicks, burrs or varnish.

Replace the governor assembly as necessary.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 214921

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184391&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184391

Governor Hub Removal

Print

1. Remove the governor hub snap ring (417).

2. Remove the governor hub (408).

3. Remove the governor hub oil screen (409).

4. Inspect the governor hub seal rings for:
nicks
burrs
damage

5. Inspect the governor hub splines for cracks and chipped teeth.

6. Inspect the governor hub oil screen for damage.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184391

Print

1.

Remove the converter housing oil seal (204) using

J 6125

-1B and

J 23129

.

<- Back Forward ->

Page

1

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184393&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184393

Converter Housing/Oil Pump/Rev Clutch
Removal

Print

Tools Required

J 23129 Converter Housing Seal Remover
J 6125-1B Slide Hammer

Caution

4.

Loosen the five inner diameter converter housing bolts (202).

Page

2

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184393&pubid=52&evc=urm&cellId

...

If the O-ring is not removed, the second clutch assembly and the third clutch assembly will
come out with the converter housing. The O-ring seal may shear while the parts are being
held, allowing the second and the third clutch assemblies to fall, causing personal injury.

2. Remove the O-ring seal (318) from the input shaft.

3. Remove the seven outer diameter converter housing bolts (203).

Page

3

of 3Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184393&pubid=52&evc=urm&cellId

...

5. Remove the converter housing (205) with the pump assembly (222) and the reverse clutch

assembly (228).

6. Remove the selective washer (224).

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184393

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184395&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184395

Second Clutch and Third Clutch Assembly
Removal

Print

1. Remove the second clutch and third clutch assembly.

2. Separate the second clutch assembly (303) from the third clutch assembly (319).

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184395&pubid=52&evc=urm&cellId

...

<- Back Forward ->

Document ID# 184395

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184398&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184398

Reverse Clutch Parts Removal

Print

1. Remove the wave plate (232).

Important

If the clutch plates are not being replaced, they must be installed in their original position.

2. Remove the reverse clutch plates (233) and (234).

3. Remove the reverse clutch pressure plate (236).

4. Inspect the reverse clutch Composition plates (234) for damaged tangs, delamination and

excessive wear.

5. Inspect the steel plates (233) for worn lugs and heat damage.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184398

Print

5.

Inspect the planetary pinions for damage and chipped teeth.

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184400&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184400

Planetary Carrier and Output Assembly
Removal

Print

1. Remove the input sun gear bearing (330).

2. Remove the input sun gear to the planetary carrier thrust washer (337).

3. Remove the planetary carrier assembly (338).

4. Inspect the planetary carrier (338) and output shaft for damage and distortion.

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184400&pubid=52&evc=urm&cellId

...

6. Remove the reaction sun gear and drum (403).

7. Remove the reaction sun gear bearing and thrust washer (401).

8. Inspect the reaction sun gear and drum for chipped teeth, worn bushing and scored drum.

9. Remove the reaction sun gear bearing and thrust washer assembly (401) located in the case or on

the bottom of the planetary carrier assembly.

10. Remove the brake band (404) from the transmission case. Note the location.

11. Inspect the brake band (404) for cracks, flaking and heat damage.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184400

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184402&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184402

Case Vent Removal

Print

Remove the case vent (185), if necessary. A new case vent must be installed if the case vent is removed.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184402

Print

3.

Remove the manual shaft spring pin (143) using diagonal pliers. Insert a wire in the center of the

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184403&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184403

Detent Lever and Manual Shaft Removal

Print

1. Remove the manual shaft nut (144).

2. Remove the detent lever and parking lock actuator rod (123) assembly (140).

pin to prevent collapsing the pin during removal.

Inspect the manual shaft for burrs before removing the shaft to prevent damage to the transmission

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184403&pubid=52&evc=urm&cellId

...

4.

case.

5. Remove the manual shaft (141).

6. Remove the manual shaft seal (142), if necessary.

7. Remove the detent lever (140) and parking pawl actuator (123) assembly.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184403

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184404&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184404

Transmission Case Electrical Connector
Removal

Print

Remove the electrical connector (105) and O-ring, if necessary.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184404

Print

Lubricants other than the recommended assembly lube changes the transmission fluid characteristics and

Ring grooves for damage

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184405&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184405

Transmission Case Inspection

Print

Notice

Use J 36850 or equivalent during assembly in order to retain checkballs or to lubricate components.

causes undesirable shift conditions or filter clogging.

Important:

When assembling the transmission, do not use any O-ring, gaskets or seals that have been removed.

Inspect the case (101) for the following:

Cracks or porosity
Case to control valve body face for damage
Interconnected fluid passages for damage
The servo bore for:

Sharp edges
Porosity

All bolt holes for thread damage, use a Heli-coil® to repair
Cooler connectors for proper torque, 38 N·m (28 lb ft)

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184405&pubid=52&evc=urm&cellId

...

Clutch plate lug for wear or damage
Band retaining pins for good retention
Detent valve bore for scoring or scratches
Modulator valve bore for scoring or scratches

<- Back Forward ->

Document ID# 184405

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184406&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184406

Detent Lever and Manual Shaft Installation

Print

1. Install the manual shaft seal (142), if necessary.

2. Install the manual shaft. The Identification groove must be on the outside.

3. Install the manual shaft spring pin (143).

4. Check the manual shaft (141) for free movement.

Page

2

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184406&pubid=52&evc=urm&cellId

...

5. Install the detent lever (140) and parking pawl actuator (123) assembly.

6. Install the manual shaft nut (144).

Tighten

Tighten the nut to 12 N·m (9 lb ft).

7. Refer to Fastener Notice .

<- Back Forward ->

Document ID# 184406

1998 Chevrolet/Geo Tracker - 4WD

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184409&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184409

Transmission Case Electrical Connector
Installation

Print

Install the electrical connector (105) with a new O-ring seal if necessary.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184409

Print

<- Back Forward ->

Page

1

of 1Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184411&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184411

Case Vent Installation

Print

Install the case vent(185), if necessary. A new case vent must be installed if the case vent is removed.

<- Back Forward ->

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184411

Print

1.

Install the brake band (404).

<- Back Forward ->

Page

1

of 2Service Information

3/11/2015

http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=184414&pubid=52&evc=urm&cellId

...

1998 Chevrolet/Geo Tracker - 4WD

Document ID# 184414

Brake Band/Reaction Sun Gear/Drum Asm
Installation

Tools Required

J 36850 Transjel®

Print