How to Change an Oil Pump on a Jeep Wrangler

Rate: (6 Ratings)

THIS MOTOR IS FAMOUS FOR GETTING A PLUGGED INLET TUBE. THE ONLY WAY TO TO CHECK THE TUBE IS TO REMOVE THE OIL PAN, EXPOSING THE OIL PUMP AND INLET TUBE. CHECK THE SCREEN AT THE BOTTOM OF TUBE INLET TO SEE IF IT IS PLUGGED WITH CONTAMIANTS.THIS MAY BE YOUR ONLY PROBLEM, ESPECIALLY IF THE OIL WASN'T KEPT CLEAN. BETTER TO REPLACE THE PUMP AND START WITH FRESH OIL.

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Instructions

Difficulty: Moderately Challenging

Things You’ll Need:

DRAIN PAN
RACHET W/10" EXTENSION
SET SMALL METRIC SOCKETS
(10 TO 15 MM)
NEW OIL & A FILTER
OIL PAN GASKET

Step1

1.DISCONNECT THE NEGATIVE BATTERY CABLE. RAISE AND SAFELY SUPPORT THE VEHICLE. 2. DRAIN THE ENGINE OIL AND REMOVE THE OIL PAN. 3. UNBOLT AND REMOVE THE PUMP ASSEMBLY FROM THE BLOCK. DISCARD THE GASKET.

Step2

4.TO INSTALL: IF A NEW PUMP IS BEING INSTALLED, PRIME THE PUMP BY SUBMERGING THE STRAINER IN CLEAN ENGINE OIL AND TURNING THE PUMP GEARS UNTIL OIL EMERGES FROM THE PUMP FEED HOLE.5.USING A NEW GASKET, INSTALL THE PUMP ON THE CYLINDER BLOCK. TIGHTEN THE SHORT BOLT TO 10 FT. LBS.(14NM)AND THE LONG BOLT TO 17 FT. LBS. (23NM).

Step3

6.INSTALL THE OIL PAN AND LOWER THE VEHICLE. 7.FILL THE ENGINE WITH THE PROPER TYPE AND QUANTITY OF OIL. 8.CONNECT THE NEGATIVE BATTERY CABLE. START THE ENGINE AND CHECK FOR PROPER OIL PRESSURE.

Tips & Warnings

FOR THE DO-IT-YOUR-SELFER, THIS JOB SHOULD TAKE AROUND 4 HOURS, GIVE OR TAKE. MAKE SURE YOU HAVE ALL THE PARTS AND OIL YOU NEED PRIOR TO STARTING.
IF THE OIL PUMP IS NOT SERVICED, DO NOT DISTURB THE POSITION OF THE OIL INLET TUBE AND STRAINER ASSEMBLY IN THE PUMP BODY. IF THE TUBE IS MOVED WITHIN THE PUMP BODY, A REPLACEMENT TUBE AND STRAINER ASSEMBLY MUST BE INSTALLED TO ASSURE AN AIRTIGHT SEAL.