Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1987GRAND PRIX BROUGHAM, 5.0 HREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - 200-4RTRANSMISSION DISASSEMBLYOVERDRIVE UNIT PARTSCOMPONENT REMOVAL
1987 Pontiac Grand Prix Brougham, 5.0 H
Component Removal
1987 Pontiac Grand Prix Brougham, 5.0 HSECTION Component Removal
- If necessary, pry oil pump seal from pump. Remove pump-to-case bolts and washers. Install Oil Pump Remover (J-24773-5) on turbine shaft. See Figure . Remove oil pump assembly from case. Remove pump-to-case gasket and tanged oil deflector plate located under pump.
- Remove 4th clutch plate-to-case snap ring. Grasp turbine shaft and lift overdrive assembly and 4th clutch plates from case. Remove clutch plates from overdrive assembly and remaining steel plate from case.
- Remove overdrive internal gear-to-carrier thrust washer from inside internal gear. Remove internal gear and internal gear-to-support thrust washer from case.
- Using a spring compressor, compress 4th clutch spring and retainer assembly. Remove support-to-clutch snap ring, spring and retainer. Remove compressor from retainer assembly. Lift 4th clutch piston from case.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.