Possible cause

POSSIBLE CAUSE

POSSIBLE FAULT

ACTION

Steering gearbox

Note: When fluid leaks from one side of rack, balance tube transfers fluid to opposite side. This gives appearance of both sides leaking. Remove both boots and clean the rack to positively identify leak.

• Cylinder LH end seal leaking into tie-rod boot
  • Remove 4-way valve inspect O-ring and port housing bore for damage, repair as necessary.
  • Inspect steering rack sealing surface. Inspect sel retainer bore in gearbox housing.
• Cylinder RH end seal leaking into tie-rod boot
  • Inspect rack sealing surface between rack piston and rack end
• Leak from valve body unit mating surfaces
  • Tighten bolts. If still leaking, replace valve body or port housing.
• Leak from either side of valve body
  • Replace all valve body unit seals and O rings.
• Leak from drilled passage plug
  • Replace valve body.

Steering pump

• Leak from front seal
  • Replace seal.
• Leak from either end of housing
  • Replace housing O rings. If still leaking, replace pump.