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 MANUALSMERCURY1989COUGAR/XR7 V6-232 3.8LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINEENGINE LUBRICATIONOIL PUMPSERVICE AND REPAIR
1989 Mercury Cougar/XR7 V6-232 3.8L
Oil Pump: Service and Repair
1989 Mercury Cougar/XR7 V6-232 3.8LSECTION Service and Repair
Oil Pump Replacement:
REPLACE
On these engines, the oil pump is contained within the front cover, Fig. 12. To replace oil pump, remove front cover as described under FRONT COVER.
REPAIR
Referring to Fig. 12, disassemble pump. To remove oil pressure relief valve, insert a self-threading sheet metal screw of the proper diameter into oil pressure relief valve chamber cap and pull cap out of chamber. Remove spring and plunger.
The inner rotor, shaft and outer race are serviced as an assembly. One part should not be replaced without replacing the other.
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.