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 MANUALSCHEVROLET1985FORWARD CONTROL 6.2 J, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - THM 400COMPONENT DISASSEMBLY & REASSEMBLYCONTROL VALVE ASSEMBLYDISASSEMBLY
1985 Chevrolet Forward Control 6.2 J, Standard
Control Valve Assembly: Disassembly
1985 Chevrolet Forward Control 6.2 J, StandardSECTION Disassembly
- Position control valve assembly with gasket surface up and accumulator pocket at bottom. Remove manual valve from upper bore. Install Compressor (J-21885) on accumulator piston. Compress piston and remove "E" retaining ring. Remove piston and spring.
- Remove retaining pins (except grooved pin in lower left bore) from bores with pin punch. Drive pins from outer side of valve body. When removing pins, hold hand over bore end in case spring forces components out of bore. See Fig 1 and Fig 2 . Remove grooved pin from lower left bore with long nose pliers. Remove valve trains beginning with upper left corner.
RENDER: 1.0x
NO RELATED
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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.