1500 4x4 Pickup V8-318 5.2L Magnum (1994)
Oil Pump: All Technical Service Bulletins
Oil Pump Drive Gear - Driveability Concerns
NO.: 18-08-93 Rev. A
GROUP: Driveability
DATE: Nov. 26, 1993
SUBJECT:
Engine Buck, Surge Or Noise - Oil Pump Drive Gear Wear
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-08-93, ISSUED ON 6/18/93, WHICH SHOULD BE REMOVED FROM
YOUR FILES. THIS BULLETIN ADDS CAUTIONS TO THE PROCEDURE, WHICH ARE HIGHLIGHTED WITH **ASTERISKS**.
MODELS:
1992 - 1993
(AB) Ram Van/Wagon
(AD) Ram Pickup/Ramcharger
(AN) Dakota
1993
(ZJ) Grand Cherokee/Grand Wagoneer
1994
(AB) Ram Van/Wagon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH 3.9L/5.2L MPI (MULTI-POINT FUEL INJECTED) ENGINES.
SYMPTOM/CONDITION:
Vehicle exhibits warm engine surging, light bucking, or cold engine lack of power or burst spark knock. Engine noises (light knock or tapping sound at
rear of engine) may also be experienced with no driveability complaint. These conditions may be caused by excessive oil pump drive gear wear.
DIAGNOSIS:
Remove the distributor cap and grasp the rotor and using a rotational motion, check the total clockwise/counter-clockwise movement at the rotor tip. If
the rotor tip movement is 5.0 mm (3/16") or more, proceed with the following repair procedure.
PARTS REQUIRED:
1
53020546
Oil Pump Drive Gear
1
01737725
Block Bushing
REPAIR PROCEDURE:
This bulletin involves replacing the oil pump drive gear with a revised part and the drive gear block bushing.
1.
Remove distributor and distributor/oil pump drive gear block bushing as outlined in the appropriate service manual.
**NOTE:
TOOL NUMBER C-3052 (DISTRIBUTOR DRIVE SHAFT BUSHING PULLER) MUST BE USED TO REMOVE DISTRIBUTOR/OIL PUMP
DRIVE GEAR AND TOOL NUMBER C-3053
(DISTRIBUTOR DRIVE SHAFT BUSHING DRIVER/BURNISHER) MUST BE USED TO INSTALL THE NEW DISTRIBUTOR/OIL PUMP
DRIVE GEAR BUSHING.**
2.
Install new drive gear block bushing P/N 01737725 and revised oil pump drive gear P/N 53020546 as outlined in the appropriate service manual.
