2024 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Front Differential Gear

Fig 1: Front Differential Gear Components Location
G16389307Courtesy of SUBARU OF AMERICA, INC.
(1) Release pressure pipe
(2) O-ring
(3) Lock nut
(4) Oil seal
(5) Drive pinion retainer
(6) Drive pinion collar
(7) O-ring
(8) Drive pinion shim
(9) Taper roller bearing
(10) Taper roller bearing outer race
(11) Taper roller bearing inner race
(12) Side bearing*
(13) Side bearing outer race
(14) Side bearing inner race
(15) Drive pinion
(16) Differential case
(17) Spring pin
(18) Hypoid gear set
(19) Pinion shaft
(20) Thrust washer
(21) Differential bevel gear
(22) Differential bevel pinion
(23) Oil baffle
(24) Lock plate
(25) Differential side retainer oil seal LH
(26) Differential side retainer
(27) O-ring
(28) Differential side retainer oil seal RH

Tightening torque: N.m (kgf-m, ft-lb)Β 

T1: 25 (2.5, 18.4)Β 

T2: 43 (4.4, 31.7)Β 

T3: 70 (7.1, 51.6)Β 

T4: 116 (11.8, 85.6)Β 

*: If the side bearing outer race is removed from the differential side retainer or the side bearing inner race is removed from the differential case, replace the side bearing with a new part.

Factory Service Tools

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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.