Axle Seal - Rear

Replace the rear axle seal on a FWD 2012-2017 Toyota Camry to stop differential fluid leaks from the CV axle interface.

Warnings

Tools required

Parts

• Rear axle seal × 1 — Use OEM specification
• Axle nut cotter pin or stake-type nut × 1 — Verify staked vs cotter pin type for specific year
• Differential gasket or RTV sealant × 1 — Use OEM specification if draining differential

Fluids

• Toyota WS ATF — 2 qt

Preparation

1. Verify vehicle is actually AWD-equipped (rare configuration) as standard Camry is FWD and has no rear axle seals
2. Park vehicle on level surface and engage parking brake
3. Loosen rear wheel lug nuts while vehicle is on ground
4. Raise rear of vehicle and support securely on jack stands rated for vehicle weight
5. Remove rear wheel on side requiring seal replacement
6. Place drain pan under differential area to catch fluid

Procedure

1. 1

   Remove axle nut
   Remove cotter pin from axle nut using pliers. If nut is staked type, use chisel to unstake. Using 30mm socket and breaker bar, remove the rear axle nut. This nut is torqued to 250 Nm and will require significant force to break loose.
2. 2

   Disconnect CV axle from differential
   Locate the inner CV joint where it connects to the differential. Remove the CV bolts securing the inner joint to the differential flange using 10mm socket. There are typically 6 bolts. Support the axle to prevent it from falling.
3. 3

   Remove CV axle assembly
   Pull the outer CV joint from the rear hub assembly. May require light tapping with rubber mallet on the end of the axle shaft. Once outer joint is free, carefully remove entire axle assembly from vehicle. Differential fluid will drain from the axle opening - ensure drain pan is positioned correctly.
   ⚠Expect 1-2 quarts of ATF to drain when axle is removed. Do not allow fluid to spill on brake components.
4. 4

   Remove old axle seal
   Using seal puller or pick tool, carefully extract the old axle seal from the differential housing. Work around the perimeter of the seal to avoid damaging the housing bore. Note the installed depth and orientation of the old seal before removal.
5. 5

   Clean seal bore
   Thoroughly clean the seal bore in the differential housing using wire brush and shop towels. Remove all old seal material, debris, and buildup. Inspect bore for damage, scoring, or corrosion that could prevent proper seal seating.
6. 6

   Install new axle seal
   Lightly coat the outer diameter of the new seal with ATF. Position seal squarely in the bore with the seal lip facing inward toward the differential. Using seal driver or appropriately sized socket that contacts only the outer edge of the seal, drive seal into bore until it seats flush with the housing face. Tap evenly around perimeter to ensure square installation.
   ⚠Do not strike the seal face directly - only contact the outer metal ring to avoid damaging the sealing lip.
7. 7

   Reinstall CV axle assembly
   Lightly coat the axle splines and seal contact surface with fresh ATF. Insert outer CV joint into rear hub assembly first, ensuring splines engage properly. Then align inner CV joint with differential flange. Install CV bolts finger-tight initially.
8. 8

   Torque CV bolts
   Torque the six CV bolts to specification in a star pattern to ensure even clamping force on the joint. This prevents distortion and ensures proper sealing of the inner CV boot.
   Torque spec

   CV Bolts61 Nm (45 lb-ft)
9. 9

   Install and torque axle nut
   Install new axle nut onto the axle shaft. Torque to specification. If using cotter pin type, install new cotter pin and bend ends to secure. If using staked type nut, use punch and hammer to stake nut collar into axle shaft groove at one point.
   ⚠Never reuse old axle nut. Always use new cotter pin or re-stake the nut to prevent loosening.
   Torque spec

   Axle Nut250 Nm (184 lb-ft)
10. 10

    Refill differential fluid
    Locate differential fill plug (typically on side or top of differential housing). Remove fill plug and add Toyota WS ATF until fluid reaches the bottom of the fill hole and begins to drip out. Reinstall fill plug. Approximately 1-2 quarts will be needed to replace what was lost.
11. 11

    Reinstall wheel and lower vehicle
    Install rear wheel and hand-tighten lug nuts in star pattern. Lower vehicle until tire just contacts ground to prevent rotation. Torque lug nuts to specification in star pattern. Fully lower vehicle and remove jack stands.
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)

Reassembly

1. Ensure all fasteners are torqued to specification and cotter pin or staking is properly installed on axle nut
2. Verify differential is filled to proper level
3. Check that CV boots are not damaged or twisted

Verification

• Test drive vehicle and verify no unusual noises from rear differential area
• After test drive, inspect seal area for any signs of leaking ATF
• Recheck differential fluid level after 50-100 miles of driving
• Verify axle nut is still properly secured and shows no signs of loosening

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