Steering Pump Pressure
- Disconnect pressure line from pump. Install pressure line from pressure gauge 32-4-000 (or equivalent) in its place. 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.