Transmission Assembly Disassembly
CAUTION:
Do not disassemble parts behind Drum Support. Refer to
[CROSS-SECTIONAL VIEW ].
- Drain A/T fluid through drain plug.
- Remove torque converter by holding it firmly and turning while pulling straight out.
- Check torque converter one-way clutch using a check tool as shown.
- Insert a check tool into the groove of bearing support built into one-way clutch outer race.
- While holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
- Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
- Remove bolts and converter housing from transmission case.
CAUTION: Do not scratch converter housing.
- Self-sealing bolt (A)
- Remove O-ring from input clutch assembly.
- Remove oil pump assembly to transmission case bolts.
- Remove the oil pump assembly evenly from the transmission case using Tools.
Tool number: ST25850000 (J-25721-A)
CAUTION:- Fully tighten the sliding hammer screws.
- Make sure that bearing race is installed to the oil pump assembly edge surface.
- Remove O-ring from oil pump assembly.
- Remove bearing race from oil pump assembly.
- Remove needle bearing from front sun gear.
- Remove front sun gear assembly from front carrier assembly.
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NOTE: Remove front sun gear by rotating it left and right. - Remove seal rings from input clutch assembly.
- Remove front carrier assembly (with input clutch assembly and rear internal gear) from rear carrier assembly.
CAUTION: Do not remove it with needle bearing.
- Loosen lock nut and remove band servo anchor end pin from transmission case.
- Remove brake band from transmission case.
- Remove mid carrier assembly and rear carrier assembly as a unit.
- Remove mid carrier assembly from rear carrier assembly.
- Remove needle bearing (front side) from mid carrier assembly.
- Remove needle bearing (rear side) from mid carrier assembly.
- Remove bearing race from rear carrier assembly.
- Remove needle bearing from rear carrier assembly.
- Remove mid sun gear assembly, rear sun gear assembly and high and low reverse clutch hub as a unit.
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CAUTION: Remove them with bearing race and needle bearing. - Remove high and low reverse clutch assembly from direct clutch assembly.
CAUTION: Make sure that needle bearing is installed to the high and low reverse clutch assembly edge surface.
- Remove needle bearing from drum support.
- Remove direct clutch assembly from reverse brake.
- Remove snap ring from A/T assembly harness connector.
- Push A/T assembly harness connector.
CAUTION: Do not damage connector.
- Remove oil pan and oil pan gasket. Refer to [OIL PAN: REMOVAL AND INSTALLATION ].
- Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
- If frictional material is detected, perform A/T fluid cooler cleaning. Refer to [A/T FLUID COOLER CLEANING ].
- Remove magnets from oil pan.
- Straighten terminal clips (<==) to free terminal cord assembly and A/T fluid temperature sensor 2 harness.
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- <==: Terminal clip (4)
- Disconnect A/T fluid temperature sensor 2 connector (A).CAUTION: Do not damage connector.
- Straighten terminal clip to free revolution sensor harness.
- Disconnect revolution sensor connector.CAUTION: Do not damage connector.
- Remove bolts (A), (B) and (C) from control valve with TCM.BOLT LENGTH SPECIFICATION
Bolt symbol Length mm (in) Number of bolts A 42 (1.65) 5 B 55 (2.17) 6 C 40 (1.57) 1 - Remove control valve with TCM from transmission case.
CAUTION: When removing, be careful with the manual valve notch and manual plate height. Remove it vertically.
- Remove A/T fluid temperature sensor 2 with bracket from control valve with TCM.
- Remove bracket from A/T fluid temperature sensor 2.
- Remove O-ring from A/T assembly harness connector.
- Disconnect TCM connectors.
CAUTION: Do not damage connectors.
- Remove A/T assembly harness connector from control valve with TCM using suitable tool.
- Disconnect TCM connector and park/neutral position switch connector.
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CAUTION: Do not damage connectors. - Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
- 2WD models
- Remove tightening bolts for rear extension assembly and transmission case.
- Bracket (1)
- Bracket (2)
- Self-sealing bolts (3)
- Bolt (A)
- Tap rear extension assembly with soft hammer.
- Remove rear extension assembly (with needle bearing) from transmission case.
- Remove tightening bolts for rear extension assembly and transmission case.
- 4WD models
- Remove adapter case to transmission case bolts and terminal bracket (2).
- <== Front (1)
- Self-sealing bolt (3)
- Tap adapter case assembly using suitable tool.
- Remove adapter case assembly (with needle bearing) from transmission case.
- Remove gasket from transmission case.
- Remove adapter case to transmission case bolts and terminal bracket (2).
- 2WD models
- Remove bearing race from output shaft.
- Remove output shaft from transmission case by rotating left and right.
- Remove parking gear from output shaft.
- Remove seal rings from output shaft.
- Remove needle bearing from transmission case.
- Remove revolution sensor from transmission case.
CAUTION:
- Do not subject it to impact by dropping or hitting it.
- Do not disassemble.
- Do not allow metal filings or any foreign material to get on the sensor's front edge magnetic area.
- Do not place in an area affected by magnetism.
- Remove reverse brake snap ring using two flat-bladed screwdrivers.
NOTE: Press out snap ring from the transmission case oil pan side gap using a flat-bladed screwdriver, and remove it using a another screwdriver.
- Remove reverse brake retaining plate from transmission case.
- Check facing for burns, cracks or damage. If necessary, replace the plate.
- Remove N-spring from transmission case.
- Remove reverse brake drive plates, driven plates and dish plate from transmission case.
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- Check facing for burns, cracks or damage. If necessary, replace the plate.
- Remove snap ring using suitable tool.
- Remove spring retainer and return spring from transmission case.
- Remove seal rings from drum support.
- Remove needle bearing from drum support edge surface.
- Remove reverse brake piston from transmission case using compressed air. Refer to
[TRANSMISSION ASSEMBLY DISASSEMBLY ].
CAUTION: Care should be taken not to abruptly blow air. It makes the piston incline, and as a result, it becomes hard to disassemble the pistons.
- Remove D-rings from reverse brake piston.
- Knock out retaining pin using suitable tool.
- Remove manual shaft retaining pin using suitable tool.
- Remove manual plate (with parking rod) from manual shaft.
- Remove parking rod from manual plate.
- Remove manual shaft from transmission case.
- Remove manual shaft oil seals using suitable tool.
CAUTION: Do not scratch transmission case.
- Remove detent spring and spacer from transmission case.
- Remove snap ring from transmission case using suitable tool.
- Remove servo assembly (with return spring) from transmission case.
- Remove return spring from servo assembly.
- Remove O-rings from servo assembly.
- Remove needle bearing (1) from rear extension (2WD models) or adapter case (4WD models).
- Remove parking actuator support from rear extension (2WD models) or adapter case (4WD models).
- Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD models) or adapter case (4WD models).
- Remove return spring (1) from parking pawl (2).
- Remove rear oil seal from rear extension (2WD models) or adapter case (4WD models) using suitable tool.
CAUTION: Do not scratch rear extension (2WD models) or adapter case (4WD models).