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 MANUALSCHEVROLET1986CAPRICE WAGON V8-307 5.0LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAUL200-R4 AUTOMATIC TRANSMISSIONSUBASSEMBLY SERVICE & TRANSAXLE ASSEMBLEOIL PUMP ROTOR & SLIDE END CLEARANCE CHECK
1986 Chevrolet Caprice Wagon V8-307 5.0L
Oil Pump Rotor & Slide End Clearance Check
1986 Chevrolet Caprice Wagon V8-307 5.0LSECTION Oil Pump Rotor & Slide End Clearance Check
Note: Do not service oil pump rotor and slide if either pump body or pump cover surfaces are damaged. Only service the rotor and slide if parts show signs of wear.
1. Using a suitable vernier micrometer, measure thickness of pump rotor and slide. Take measurements on flat undamaged surfaces.
2. Using measurements obtained in step 1, refer to Figure for service replacement parts. Replacement parts will provide the same clearance as the original oil pump assembly. Proper en clearance should be 0.0008-0.002 inch. This clearance cannot be measured with a feeler gauge.
3. Using a fine oil stone, remove any burrs on the replacement rotor and slide, then measure parts with a vernier micrometer to assure proper thickness. Incorrect rotor thickness could result in a damaged oil pump assembly and/or low oil pressure. Incorrect slide thickness could result in incorrect transmission line pressure.
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.