Service procedures

Lubricant change

(1) Raise and support the vehicle.

(2) Remove the lubricant fill hole plug from the differential housing cover.

(3) Remove the differential housing cover and drain the lubricant from the housing.

(4) Clean the housing cavity with a flushing oil, light engine oil, or lint free cloth. Do not use water, steam, kerosene, or gasoline for cleaning.

(5) Remove the original sealant from the housing and cover surfaces.

(6) Apply a bead of Mopart Silicone Rubber Sealant, or equivalent, to the housing cover (Fig. 9).

Install the housing cover within 5 minutes after applying the sealant.

Fig. 9 Apply Sealant

1 - SEALANT

2 - AXLE HOUSING COVER

(7) Install the cover and any identification tag.

Tighten the cover bolts to 41 N*m (30 ft. lbs.) torque.

(8) For Trac-loky differentials, a quantity of Mopart Trac-loky lubricant (friction modifier), or equivalent, must be added after repair service or a lubricant change. Refer to the Lubricant Specifications section of this group for the quantity necessary.

(9) Fill differential with Mopart Hypoid Gear Lubricant, or equivalent, to bottom of the fill plug hole. Refer to the Lubricant Specifications section of this group for the quantity necessary.

CAUTION: Overfilling the differential can result in lubricant foaming and overheating.

(10) Install the fill hole plug and lower the vehicle.

(11) Trac-loky differential equipped vehicles should be road tested by making 10 to 12 slow figureeight turns. This maneuver will pump the lubricant through the clutch discs to eliminate a possible chatter noise complaint.