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How to Change the Pinion Seal on a 1982 Chevrolet Camaro

The 1982 Chevrolet Camaro was equipped with a rear differential that routed the power received by the transmission from the engine to the rear wheels. The differential consisted primarily of two components: a pinion gear and a ring gear. Between the pinion gear's mounting plate and the body of the differential is a seal. When that seal fails, the axle fluid within the differential will leak. The seal cannot be repaired, but replacing the seal requires no major disassembly.

Tools Used: Jack, Jack stands, Socket wrench, Drain pan, Silicon compound, Differential fluid

Change the Pinion Seal

Lift the back of the Camaro with a jack to increase the working space underneath the car, then lower it onto jack stands.

Remove the four nuts that secure the driveshaft to the differential with a socket wrench, then push the driveshaft into the back of the transmission and lower the back of the driveshaft away from the differential to expose the pinion gear's mounting plate.

Remove the bolts that secure the pinion gear's mounting plate to the front of the differential with a wrench.

Position a drain pan underneath the pinion gear's mounting plate. The pan will catch any fluid that drains out of the differential when the mounting plate is removed.

Pull the pinion gear's mounting plate out of the differential to access the pinion gear.

Remove the single nut at the back of the pinion gear with a socket wrench and slide the pinion gear out of the mounting plate to access the pinion seal.

Pull the pinion seal off of the mounting plate.

Apply silicon compound to each side of the new seal and position the seal onto the mounting plate.

Insert the pinion gear into the mounting plate and install the gear's securing nut with a socket wrench.

Slide the pinion gear into the differential until its mounting plate rests flush against the differential, then install and tighten the plate's retaining bolts.

Position the driveshaft against the differential and install and tighten the driveshaft's four nuts.

Remove the drain fitting from the back of the differential with a socket wrench and pour new differential fluid through the drain fitting opening until the fluid reaches the bottom of the opening.

Tighten the drain fitting into the back of the differential.

Lower the Camaro to the ground.

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