Steering Pump Pressure
- On 733i, discharge accumulator by operating brake pedal 20 times. On all models, disconnect pressure line from pump. Connect pump pressure line to gauge. Disconnect pressure line from control regulator and connect it to pressure gauge.
- Shut cut-off valve on gauge. Open shut-off valve on pressure line (See Figure )
, and bleed system with engine running at idle. After bleeding, close valve in pressure line for 10 seconds maximum and read pressure. On 528i and 633CSi, pressure should be 1400±140 psi (98.5±9.8 kg/cm2
). On 733i, pressure should be 1560±156 psi (109.5±11 kg/cm2
). If pressure is not within limits, check belt tightness. Repair or replace pump if belt adjustment does not remedy problem.
Courtesy of BMW OF NORTH AMERICA, INC.
Courtesy of BMW OF NORTH AMERICA, INC.