Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2002LEGACY GT WAGON AWD F4-2.5L SOHCREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIRUNIT REPAIRREDUCTION DRIVE GEAR
2002 Subaru Legacy GT Wagon AWD F4-2.5L SOHC
Reduction Drive Gear
2002 Subaru Legacy GT Wagon AWD F4-2.5L SOHCSECTION Reduction Drive Gear
A: REMOVAL
1. Remove rear vehicle speed sensor, and separate the transmission case and extension case.
2. Remove the reduction driven gear.
3. Using ST, extract the reduction drive gear.
ST1 499737100 PULLER
ST2 899524100 PULLER SET
B: INSTALLATION
1. Install the reduction drive gear assembly.
NOTE: Insert it fully into position until the bearing shoulder bottoms.
2. Install the reduction driven gear.
3. Combine the transmission case with the extension case, and install rear vehicle speed sensor.
C: DISASSEMBLY
1. Take out the seal rings.
NOTE: Be careful not to damage the seal rings.
2. Using ST, remove the ball bearing.
ST 498077600 REMOVER
3. Using a press, remove the reduction drive gear.
D: REASSEMBLY
1. Press-fit the reduction drive gear to the shaft.
2. Press-fit the ball bearing to the reduction drive gear.
3. Attach new seal rings.
NOTE: To make subsequent assembly easier, apply Vaseline to the grooves of the shaft and to the exterior of the seal ring.
E: INSPECTION
^ Rotate bearing by hand, make sure it rotates smoothly.
^ Make sure that each component is free of harmful gouges, cuts, or dust.
^ Measure the extension end play and adjust it to within specifications.
1. Remove rear vehicle speed sensor, and separate the transmission case and extension case.
2. Remove the reduction driven gear.
3. Using ST, extract the reduction drive gear.
ST1 499737100 PULLER
ST2 899524100 PULLER SET
B: INSTALLATION
1. Install the reduction drive gear assembly.
NOTE: Insert it fully into position until the bearing shoulder bottoms.
2. Install the reduction driven gear.
3. Combine the transmission case with the extension case, and install rear vehicle speed sensor.
C: DISASSEMBLY
1. Take out the seal rings.
NOTE: Be careful not to damage the seal rings.
2. Using ST, remove the ball bearing.
ST 498077600 REMOVER
3. Using a press, remove the reduction drive gear.
D: REASSEMBLY
1. Press-fit the reduction drive gear to the shaft.
2. Press-fit the ball bearing to the reduction drive gear.
3. Attach new seal rings.
NOTE: To make subsequent assembly easier, apply Vaseline to the grooves of the shaft and to the exterior of the seal ring.
E: INSPECTION
^ Rotate bearing by hand, make sure it rotates smoothly.
^ Make sure that each component is free of harmful gouges, cuts, or dust.
^ Measure the extension end play and adjust it to within specifications.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.