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 MANUALSBUICK1987REGAL GRAND NATIONALREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - 200CTRANSMISSION DISASSEMBLYEXTERNAL PARTSTHIRD ACCUMULATOR CHECK VALVE REPLACEMENT
1987 Buick Regal Grand National
Third Accumulator Check Valve Replacement
1987 Buick Regal Grand NationalSECTION Third Accumulator Check Valve Replacement
- Using a No. 4 screw extractor, remove check valve assembly from case by turning and pulling straight out. See Fig 1 .
- Install new check valve assembly, small end first, into case. Position oil feed slot in tube so it faces servo cover. Using a 3/8" diameter metal rod and hammer, drive assembly in until it is flush or below surface of third accumulator case hole.
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.