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Power Booster Check Valve Test

  1. Disconnect vacuum hose from check valve.
  2. Remove check valve and valve seal from booster.
  3. Use a hand operated vacuum pump for test.
  4. Apply 15-20 inches vacuum at large end of check valve. See Fig 1.
  5. Vacuum should hold steady. If gauge on pump indicates vacuum loss, check valve is faulty and should be replaced.
Fig 1: Typical - Vacuum Check Valve & Seal
GC0025496Courtesy of CHRYSLER LLC
1 - BOOSTER CHECK VALVE
2 - APPLY TEST VACUUM HERE
3 - VALVE SEAL
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