2014 Jeep Wrangler JK Factory Service Manual 09 - Engine, 2.8L Diesel

PUMP, Internal Vacuum

DESCRIPTION

The diesel engine uses a internal vacuum pump (7). This vacuum pump (7) is mounted in the engine front cover (2). The vacuum pump is driven by a sprocket (6) on the crankshaft.

DIAGNOSIS AND TESTING - VACUUM PUMP

  1. Connect a vacuum gauge to the booster check valve with a short length of hose and T-fitting.

    2.  
  2. Start the engine allowing the engine to run for 30 seconds. Vacuum should be 18 inches HG (609 millibars). Verify the vacuum line is not leaking. If no leak is present replace vacuum pump (Refer to 09 - Engine/Engine Block/PUMP, Internal Vacuum - Removal) .

    3.  

REMOVAL

NOTE:

The vacuum pump is not a serviceable item as it is part of the front cover. If diagnosis has directed you to replace the vacuum pump, then the front cover needs to be replaced.

  1. Remove the front cover (Refer to 09 - Engine/Engine Block/COVER, Engine - Removal) .

    2.  

INSTALLATION

  1. Install the front cover (Refer to 09 - Engine/Engine Block/COVER, Engine - Installation) .

    2.