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 MANUALSBMW1992M5REPAIR AND DIAGNOSISSTEERINGMANUAL STEERINGPOWER RECIRCULATING BALLTESTINGSTEERING PUMP PRESSURE TEST
1992 BMW M5
Steering Pump Pressure Test
1992 BMW M5SECTION Steering Pump Pressure Test
- Discharge accumulator by operating brake pedal 20 times. Disconnect pressure line from pump. Connect Pressure Tester (32-4-000).
- Disconnect pressure line from control regulator. Connect Pressure Gauge. Shut pressure cut-off valve on gauge. Open cut-off valve on pressure line.
- Bleed system with engine running at idle. Close valve in pressure line for 10 seconds maximum while reading pressure. On all models except 735i, 735iL and 750iL, pressure should be 1422-1564 psi (100-110 kg/cm2 ).
- On 735i, 735iL and 750iL, pressure should be 1849-1991 psi (130-140 kg/cm2 ). If pressure is not within limits, check belt tightness. Repair or replace pump if belt adjustment does not remedy problem.
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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.