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 MANUALSCHEVROLET1993SPORTVAN G20, 5.7 KREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - 4L60/4L60-ECOMPONENT DISASSEMBLY & REASSEMBLYREVERSE INPUT CLUTCHREASSEMBLY
1993 Chevrolet Sportvan G20, 5.7 K
Reverse Input Clutch: Reassembly
1993 Chevrolet Sportvan G20, 5.7 KSECTION Reassembly
- Apply ATF to piston seals. Install seals on piston with seal lips facing away from plates. Install piston in clutch housing. Install spring assembly with large opening toward piston. Compress spring assembly. Install retaining ring.CAUTION: Ensure correct retaining ring is used. Ensure reverse input clutch retaining ring is not interchanged with low-reverse retaining ring.
- Install Belleville plate. Install clutch plates. Install backing plate with chamfered side upward. Install retaining ring. Apply even pressure to backing plate using fingers.
- DO NOT apply too much pressure or Belleville plate will be distorted. Using feeler gauge, measure clearance between retaining ring and backing plate. Clearance should be .040-.076" (1.02-1.94 mm). Select backing plate. See BACKING PLATE SPECIFICATIONS table.
BACKING PLATE SPECIFICATIONS
| Identification Number | Thickness In. (mm) |
|---|---|
| 5 | .293-.299 (7.44-7.59) |
| 6 | .267-.273 (6.78-6.93) |
| 7 | .241-.247 (6.12-6.27) |
| 8 | .215-.221 (5.46-5.61) |
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.