Component Disassembly & Reassembly: Governor: Disassembly

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.

Governor, except driven gear, is serviced as a complete assembly. Driven gear may be serviced separately and requires disassembly of governor for gear replacement.

Fig 1: Exploded View of Governor Assembly
Courtesy of GENERAL MOTORS CORP.

Fig 2: Exploded View of THM 400 Case & External Parts
Courtesy of GENERAL MOTORS CORP.

Fig 3: Exploded View of THM 400 Case & External Parts Legend
Courtesy of GENERAL MOTORS CORP.

Fig 4: Exploded View of THM 400 Internal Parts
Courtesy of GENERAL MOTORS CORP.

Fig 5: Exploded View of THM 400 Internal Parts Legend
Courtesy of GENERAL MOTORS CORP.
Governor weights are interchangeable from side to side. Cut off one end of each governor weight pin and remove pins, governor thrust cap, governor weights and springs. Remove governor valve from governor sleeve. See Fig 1.