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HOMESERVICE MANUALSSUBARU2014LEGACY 2.5I, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)DRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESA/T & M/T DIFFERENTIALSREAR DIFFERENTIAL FRONT OIL SEALREPLACEMENT
2014 Subaru Legacy 2.5i, Automatic CVT Trans

Rear Differential Front Oil Seal: Replacement

2014 Subaru Legacy 2.5i, Automatic CVT TransSECTION Replacement
  1. Shift the select lever or gear shift lever to neutral.
  2. Release the parking brake.
  3. Disconnect the ground cable from battery.
  4. Lift up the vehicle.
  5. Drain differential gear oil. Refer to REPLACEMENT .
  6. Remove the rear exhaust pipe.
  7. Remove the heat shield cover.
    Fig 1: Identifying Heat Shield Cover
    G08583065Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the propeller shaft. Refer to REMOVAL .
  9. Check the initial torque and write it down.
  10. Remove the self-locking nut while holding the companion flange with ST.

    ST 498427200 FLANGE WRENCH

    Fig 2: Removing Self-Locking Nut
    G05032555Courtesy of SUBARU OF AMERICA, INC.
  11. Extract the companion flange using the ST.

    ST 399703600 PULLER ASSY

    Fig 3: Removing Companion Flange Using ST
    G05032556Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the oil seal using ST or screwdriver.

    ST 398527700 PULLER ASSY

    Fig 4: Removing Oil Seal Using ST
    G05032557Courtesy of SUBARU OF AMERICA, INC.
  13. Using the ST, install the oil seal.
    NOTE:
    • Use a new oil seal.
    • Apply differential gear oil to the oil seal lips.

    ST 498447120 INSTALLER

    Fig 5: Installing Oil Seal Using ST
    G05032558Courtesy of SUBARU OF AMERICA, INC.
  14. Install the companion flange.
    NOTE: Use a plastic hammer to install companion flange.
  15. Tighten the self-locking nut to the specified torque so that the initial torque of companion flange becomes the same as that of before oil seal replacement.
    NOTE:
    • Use a new self-locking nut.
    • Before installing the self-locking nut, apply the seal material to the threads of the drive pinion shaft and to the seating surface of the self-locking nut.

    Seal material: 

    THREE BOND 1324 (Part No. 004403042) or equivalent 

    Tightening torque: 

    T-type 

    167 - 196 N.m (17.0 - 20.0 kgf-m, 123.2 - 144.6 ft-lb) 

    VA-type 

    162 - 220 N.m (16.5 - 22.5 kgf-m, 119.5 - 162.3 ft-lb) 

    ST 498427200 FLANGE WRENCH

    Fig 6: Tightening Self-Locking Nut
    G05032555Courtesy of SUBARU OF AMERICA, INC.
  16. Hereafter, perform assembly in the reverse order of disassembly.
  17. Fill differential gear oil. Refer to REPLACEMENT .
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.