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 MANUALSSUBARU1998LEGACY BRIGHTON WAGON AWD F4-2.2L SOHCREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIRSERVICE PROCEDUREDIFFERENTIAL CASE ASSEMBLY
1998 Subaru Legacy Brighton Wagon AWD F4-2.2L SOHC
Differential Case Assembly
1998 Subaru Legacy Brighton Wagon AWD F4-2.2L SOHCSECTION Differential Case Assembly
A: DISASSEMBLY

1. Using a press and Special Service Tool(SST), remove the taper roller bearing.
(SST) 498077000 REMOVER
CAUTION: Be careful not to damage the speedometer drive gear.

2. Secure the case in a vise and remove the crown gear tightening bolts, then separate the crown gear, case (right hand) and case (left hand).

3. Pull out the straight pin and shaft, and remove the differential bevel gear, washer, and differential bevel pinion.
B: INSPECTION
Check each component for harmful cuts, damage and other faults.
C: ASSEMBLY

1. Install the washer, differential bevel gear and differential bevel pinion in the differential case (right hand). Insert the pinion shaft, and fit the straight pin.
NOTE: Install straight pin from reverse direction.

2. Install the washer and differential bevel gear to the differential case (left hand). Then put the case over the differential case (right hand), and connect both cases.
3. Install the crown gear and secure by tightening the bolt.
Standard tightening torque:
62 ± 5 Nm (6.3 ± 0.5 kg-m, 45.6 ± 3.6 ft. lbs.)

4. Measurement of backlash (Selection of washer)
Measure the gear backlash with SST1 and SST2, and insert SST2 through the access window of the case.
SST1 498247001 MAGNET BASE
SST2 498247100 DIAL GAUGE
Standard value:
0.13 - 0.18 mm (0.0051 - 0.0071 inch)
NOTE: Measure the backlash by applying a pinion tooth between two bevel gear teeth.

5. Install the speedometer drive gear. Then force-fit the taper roller bearing with a press and SST.
SST 398487700 DRIFT
1. Using a press and Special Service Tool(SST), remove the taper roller bearing.
(SST) 498077000 REMOVER
CAUTION: Be careful not to damage the speedometer drive gear.
2. Secure the case in a vise and remove the crown gear tightening bolts, then separate the crown gear, case (right hand) and case (left hand).
3. Pull out the straight pin and shaft, and remove the differential bevel gear, washer, and differential bevel pinion.
B: INSPECTION
Check each component for harmful cuts, damage and other faults.
C: ASSEMBLY
1. Install the washer, differential bevel gear and differential bevel pinion in the differential case (right hand). Insert the pinion shaft, and fit the straight pin.
NOTE: Install straight pin from reverse direction.
2. Install the washer and differential bevel gear to the differential case (left hand). Then put the case over the differential case (right hand), and connect both cases.
3. Install the crown gear and secure by tightening the bolt.
Standard tightening torque:
62 ± 5 Nm (6.3 ± 0.5 kg-m, 45.6 ± 3.6 ft. lbs.)
4. Measurement of backlash (Selection of washer)
Measure the gear backlash with SST1 and SST2, and insert SST2 through the access window of the case.
SST1 498247001 MAGNET BASE
SST2 498247100 DIAL GAUGE
Standard value:
0.13 - 0.18 mm (0.0051 - 0.0071 inch)
NOTE: Measure the backlash by applying a pinion tooth between two bevel gear teeth.
5. Install the speedometer drive gear. Then force-fit the taper roller bearing with a press and SST.
SST 398487700 DRIFT
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.