Checking Function Of Power Steering Vane Pump
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 BMW 530i, 2003 BMW 525i, 2002 BMW 530i, 2002 BMW 525i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Ensure utmost cleanliness. No dirt is allowed to enter the system.
- Check all hose connections, pump and steering gear for leaks.
- Unscrew and remove splash guard. See 13 32 051 REPLACING FUEL FILTER (M54)
- Detach pressure line from pump and connect special tool (32 4 000). See USING SPECIAL TOOL (32 4 000) .
- Close valve (A) and open valve (B). See Fig 1.
- Start engine. Ensure correct hydraulic fluid level in tank.
- Heat hydraulic fluid to approximately 122° F (50° C) by moving steering wheel at increased engine speed.
- Close valve (B) for a maximum 10 seconds and read off pressure. If pressure exceeds 1595 psi (110-120 bar) by more than 10 percent replace vane pump. If pressure is 10 percent less than 1595 psi 1595 psi (110-120 bar), replace vane pump.
- Connect pressure line after removing special tool. Tighten to specification. See TORQUE SPECIFICATIONS .
- Bleed hydraulic system. See BLEEDING POWER STEERING SYSTEM under LUBRICATION.
- Install splash guard.