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 MANUALSCHEVROLET1987CHEVY VAN G30, 5.7 K, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONMANUAL TRANSOVERHAUL - NEW PROCESS A833 4-SPEED ODCOMPONENT DISASSEMBLY & REASSEMBLYGEARSHIFT HOUSING & MECHANISMREASSEMBLY
1987 Chevrolet Chevy Van G30, 5.7 K, 400/M40
Gearshift Housing & Mechanism: Reassembly
1987 Chevrolet Chevy Van G30, 5.7 K, 400/M40SECTION Reassembly
- Install interlock levers on pivot pin and fasten with "E" clip. Use pliers to install spring on interlock lever hangers. Coat new oil seal "O" rings and "O" ring retainers with multipurpose grease.
- Lubricate shift shaft bores in cover and install each shift lever shaft, followed by "O" ring and "O" ring retainer. Install operating levers and retaining nuts. Make sure 3rd-overdrive operating lever points downward.
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.