Reassembly (Complete Gear Assembly)
WARNING: This page does not describe the selected car, but rather 124 other vehicles, including the 1991 Chevrolet Pickup, 1991 Chevrolet Cab & Chassis, 1988 GMC Vandura Special, 1988 GMC Vandura, and 1988 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
- Install thrust bearing-to-sun gear race, thrust bearing, and thrust bearing-to-rear internal gear race on grooved end of mainshaft. Install mainshaft into rear internal gear. Install thrust bearing-to-sun gear race, bearing, and thrust bearing-to-output shaft on mainshaft.
- Install snap ring on mainshaft. Install mainshaft assembly to output shaft. Install snap ring and "O" ring seal. Install gear ring over output carrier. Install thrust washer into output carrier. Ensure tabs are in pockets. Lubricate pinion gears with transmission fluid and install reaction carrier into output carrier.
- Install sun gear, chamfered inside diameter first, into reaction carrier assembly. Install sun gear shaft with long splined end first. Install thrust bearing-to-center support race on sun gear shaft. Ensure flange is up against sun gear. Install needle thrust bearing. Install thrust bearing-to-center support races.
- Install thrust washer in recess of center support. Install reaction drum spacer and roller clutch assembly into reaction carrier. Install center support-to-reaction carrier thrust washer into recess in center support. Install center support into roller clutch in reaction carrier.NOTE: With reaction carrier held stationary, center support should rotate counterclockwise only.
- Install Holding Tool (J-21795-02) so tangs engage groove in mainshaft. Tighten set screw to prevent movement of roller clutch during installation of gear unit assembly. Remove gear unit from holding tool. Place unit on side and install output shaft-to-case metal thrust washer (bent tabs in pockets).