Rear Differential
Differential Draining and FillingService Repair No - 51.25.02
CAUTION: Do not fill the differential with lubricant up to the filler plug. The filler plug is only used to fill the differential with lubricant, and not to act as a level indicator.
NOTE: The only way to check the fluid level in the differential is to drain all the fluid out and refill with the correct quantity, shown in the specifications.
1. WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
Raise and support the vehicle.
2. CAUTION: Do not undo or remove the large protruding hexagon on the differential casing.
Remove the differential case lubricant filler plug.
^ Clean the area around the lubricant filler plug.
^ Position container to collect fluid loss.
3. Drain the differential lubricant.
^ Clean the area around the drain plug.
^ Remove the fluid drain plug.
4. CAUTION: There has been 2 different types of fixings used for the drain plug. Note the type and make sure the correct torque is applied, see below.
Install the lubricant drain plug.
^ Clean the drain plug.
^ Up to differential serial number 254325: Tighten the hexagonal drive drain plug to 54 Nm (40 lb.ft).
^ From differential serial number 254326: Tighten the 3/8 inch square drive drain plug to 28 Nm (21 lb.ft).
5. CAUTION: There have been 2 different types of fixings used for the drain plug. Note the type and differential serial number, and make sure the correct torque is applied, see below.
CAUTION: Make sure the correct specification and quantity of oil is used.
Fill the differential with the correct amount of lubricant.
6. Install the differential filler plug.
^ Clean the filler plug.
^ Tighten the filler plug to 34 Nm (25 lb.ft).