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 MANUALSBUICK1985ELECTRA BASE, 4D SEDAN, 4.3 TREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - 440-T4/4T60 & 4T60-ECOMPONENT DISASSEMBLY & REASSEMBLYINPUT CLUTCH ASSEMBLYREASSEMBLY
1985 Buick Electra Base, 4D Sedan, 4.3 T
Input Clutch Assembly: Reassembly
1985 Buick Electra Base, 4D Sedan, 4.3 TSECTION Reassembly
- Lubricate input clutch piston inner seal with ATF, and install seal using Seal Driver (J-34093) and Protector (J-34092). Assemble input piston into input housing. Assemble "O" ring seal onto input shaft.
- Install spring retainer and guide into piston. See Fig 1. Install 3rd clutch piston housing into input housing. Using spring compressor, compress 3rd clutch housing, and install snap ring.
- Install 3rd clutch inner seal. Install 3rd clutch piston into housing. Compress 3rd clutch spring retainer, and install snap ring.
- Install wave plate. Assemble 3rd clutch plates; start with steel plate, and then alternate between composition and steel plates. Install 3rd clutch backing plate with stepped side facing up. Install snap ring.
- Assemble input clutch plates; start with composition plate, and then alternate between steel and composition plates. Install input clutch backing plate with identification mark facing up.
- Install snap ring. Apply air pressure to oil passages in input shaft, and check for proper operation of clutch. Air pressure must not exceed 90 psi (6.2 kg/cm2 ).
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.