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.
1987 Chevrolet G 30 Van V8-305 5.0LFACTORY OEM SERVICE PROCEDURE
Pump Body Assembly
1. Install O-ring seal and oil seal ring into groove on back side of slide, as shown. Apply suitable locking compound to the pump body oil seal to help aid in retaining seal in body.
2. Install pivot pin spring and pivot pin into the pump body.
3. Install slide while aligning notch in slide with pivot pin, then the slide seal and support. Oil seal ring should face downward into the pump pocket.
4. Install pump vanes and vane guide ring, and rotor assembly.
5. Install pump slide spring. If removed, install the oil seal assembly using pump oil seal installer tool No. J-25016, or equivalent.
Factory Service Tools
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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.
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