Engine - Oil Leaks: Overview

Bulletin No. 001/95
Issued 6/30/95
Revised 11/23/95

Category
D

Applicable Model/s
1991-94 Navajo
1994-95 B-Series

Subject
4.0L ENGINE OIL LEAKS

The "Warranty Information" portion of this bulletin is revised. Changes are highlighted by asterisks and shown in illustrations. Replace the original bulletin with this revised copy.

APPLICABLE MODELS/VINS

All 1991-94 Navajo Vehicles
All 1994-95 B-Series Vehicles with 4.0L engines

DESCRIPTION

The pamphlet contains oil leak sealing techniques, associated parts numbers and proper warranty claim information for the following areas:

^ Rocker Arm Covers
^ Intake Manifold
^ Oil Pan
^ Rear Main Seal

Oil leaks in these areas have led to misdiagnosis, improper repair and customer dissatisfaction.

To decrease oil leaks around the oil pan, the configuration of the oil pan sealing surface and the oil pan gasket have changed. * Due to this change, the old and new style parts are not interchangeable. *

SERVICE MANAGERS:

Please place a copy of the pamphlet into the applicable workshop manual You will receive 2 pamphlets with the delivery of this bulletin. Make an in-house copy if additional pamphlets are needed.





PARTS INFORMATION

NOTE:
1. To decrease oil leaks around the oil pan, the configuration of the oil pan sealing surface and the oil pan gasket have changed. It is important to note that the new style pan and gasket are not interchangeable with the old parts.

2. The part numbers listed are current at the time of printing. Check your parts microfiche or EPC for updated information

3. The vehicle you are servicing may not require all of the above parts. Confirm the appropriate repair PRIOR to placing a stock order.





SUPPLY and TOOL INFORMATION








WARRANTY INFORMATION

(Applies To Verified Customer Complaints On Vehicles Covered Under Normal Vehicle Warranty. Refer To The SRT Microfiche For Current Warranty Term Information).

Warranty Type: A
Symptom Code: 76
Damage Code: 91





OIL LEAK DIAGNOSTIC and REPAIR PROCEDURE

Place the following pages at the beginning of section B in the applicable workshop manual.

REPAIR PROCEDURE

Refer to the Parts Section of these procedures to see how a visual inspection for oil leaks should be performed. After determining the location, perform procedure A, B, C or D.

NOTE:
These procedures do not include the air test procedure outlined in this bulletin. This procedure should only be used if the leak location can not be positively identified.





After locating the leak area, refer to the index to determine which page contains the appropriate repair.





VISUAL INSPECTION AND REPAIR PROCEDURES - 4.0L OIL LEAK LOCATION








PROCEDURE "A" - LEAKS OIL AT THE ROCKER ARM COVER(S)





PROCEDURE "B" - LEAKS OIL AT INTAKE MANIFOLD





PROCEDURE "C" - OIL LEAKS AT FRONT END














PROCEDURE "D" - OIL LEAKS AT REAR OF ENGINE