LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2000 >> 750iL >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Electronic Suspension (E38) >> Diagnosis & Testing >> Level Control Pump

Level Control Pump

  1. Check oil level for power steering unit. It should be approximately 25 mm below the edge.
  2. Remove splash guard.
  3. Unfasten line (3) to control valve on the power steering pump. See Fig 1 .
  4. Prepare special tool (32 4 000) or (54 3 100). See Fig 2 .
    5. CAUTION: Non-return valve (A) must be closed for high pressure measurements. If not there could be damage to pressure gauge. Non-return valve (A) is low pressure, 0-218 psi (0-15 bar) closed. Non-return valve (B) is high pressure, 0-2176 psi (0-150 bar) open. See Fig 3 .
  5. Attach special tool (37 2 021/022) and install between pump and line. See Fig 4 .
  6. Unfasten control rod joint from lever on control valve.
  7. Start engine.
  8. Move lever on control valve in forwards direction. Tail of vehicle lifts. Read off pressure. The maximum pressure is 1668-1886 psi (115-130) bar.
  9. Move lever into center position.
  10. Move lever into reverse direction and read off pressure in each case. Nominal value is minimum pressure of 392-479 psi (27-33 bar).
  11. Remove pressure gauge, replace gaskets and tighten line connections to specification. See TORQUE SPECIFICATIONS  .
  12. Check steering pump oil level again.
Fig 1: Identifying Power Steering Pump Components
G00165401Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Preparing Special Tool (32 4 000)
G00165402Courtesy of BMW OF NORTH AMERICA, INC.
Fig 3: Identifying High & Low Pressure Valves
G00165404Courtesy of BMW OF NORTH AMERICA, INC.
Fig 4: Attaching Special Tool (37 2 021)
G00165403Courtesy of BMW OF NORTH AMERICA, INC.
scientia non olet · About LEMON Manuals