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Hydraulic System Bleeding

  1. Fill pump reservoir. Operate engine until power steering fluid reaches operating temperature. Stop engine. Recheck fluid level. Add fluid as necessary. Repeat procedure until fluid level stabilizes.
  2. Raise and support vehicle so front wheels are off ground. Start engine. Turn steering wheel from side to side several times. Avoid hitting stops or holding wheel in full left or right position. Fluid level should remain visible.
  3. Return wheels to center position. Operate engine for 2-3 minutes. Road test vehicle. Recheck fluid level. Fluid containing air will have a milky appearance. All air should be eliminated to obtain normal steering.
    NOTE: Abnormal noise originating from the power steering system may be caused by air trapped in the system. Rotunda Vacuum Tester (021-00014) and following procedure will eliminate this condition.
  4. Carefully remove pump filler adapter and dipstick. Check and fill reservoir to COLD mark. Disconnect and ground ignition coil lead. Raise front wheels off ground.
  5. Crank engine while turning steering wheel. DO NOT  hold wheel on stops. Add fluid if necessary. Attach coil lead. Install vacuum tester onto reservoir.
    NOTE: DO NOT  use engine as vacuum source to purge air from power steering system.
  6. Start engine. With engine idling, apply 15 in. Hg vacuum to reservoir. As air is purged from system, vacuum and fluid level will decrease.
  7. Maintain specified vacuum for about 3 minutes. Release vacuum. Check fluid level. Fill as necessary. Install filler adapter assembly and dipstick. Start engine.
  8. Turn steering wheel from stop to stop while checking for leaks. If air is still present in system, repeat procedure until all air is removed. Lower vehicle. Road test vehicle.
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