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 MANUALSPONTIAC1987FIERO BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL & TESTING - 125C/3T40COMPONENT DISASSEMBLY & REASSEMBLYCONTROL VALVE BODY & OIL PUMP ASSEMBLIESINSPECTION
1987 Pontiac Fiero Base, Automatic
Control Valve Body & Oil Pump Assemblies: Inspection
1987 Pontiac Fiero Base, AutomaticSECTION Inspection
- Clean all components. DO NOTΒ clean pump seals in solvent. Check all parts for wear or damage.
- Replace pump shaft bearing assembly using Bearing Remover/Installers (J-28698 and J-7092-2). Drive bearing out toward case cover side. Using bearing installers, press bearing and seal assembly flush to .012" (.3 mm) below pump pocket.
- Measure the pump rotor and/or slide thickness. Measure on flat, undamaged surface. Use original measurement when obtaining replacement parts. Pump rotor thicknesses range from .7052-.7071" (17.912-17.962 mm) in .0005" (.013 mm) increments. Hone both sides of replacement rotor and/or slide to remove burrs.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.