Wrangler L6-4.0L VIN S (2000)
Crankshaft Main Bearing Seal: Customer Interest
Engine - Apparent Rear Main Seal Oil Leaks
NUMBER: 09-010-04 REV. A
GROUP: Engine
DATE: October 01, 2004
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 09-010-04, DATED MARCH 16, 2004, WHICH SHOULD BE REMOVED
FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE THE ADDITION OF THE 2005 MODEL
YEAR.
SUBJECT:
4.0L Engine - Dirt And Debris Accumulation At Rear Main Seal
OVERVIEW:
This bulletin involves the application of a small amount of sealer where the top of the transmission bellhousing mates to the engine.
MODELS:
**1997 - 2005** (TJ)
Wrangler
NOTE:
**This bulletin applies to vehicles equipped with a 4.0L engine (sales code ERH) and a manual transmission (sales code DDQ, DDD, or DEH) that
were built prior to September 02, 2004 (MDH 0902XX).**
SYMPTOM/CONDITION:
The customer may experience engine oil seepage from the area of the rear main bearing seal. Closer inspection may reveal that the cause of the engine
oil seepage past the rear main bearing seal is due to the accumulation of dirt and debris around the outside of the rear main seal. This condition may
occur more frequently if the vehicle is used in off road conditions.
A spacer plate is used to mate the transmission bellhousing to the back of the engine. The spacer plate has a slot machined into it at the 12 o'clock
position. A small opening may occur as a result of the spacer slot when the spacer is mated between the engine and transmission bellhousing. The narrow
spacer opening at the top of the transmission bellhousing may allow small size debris to enter the bellhousing and accumulate around the outside of the
rear main engine seal. If debris accumulation becomes significant, damage to the rear main seal may occur.
DIAGNOSIS:
If a vehicle is in for service perform the Repair Procedure if the repair has not previously performed.
If engine oil seepage from the engine rear main oil seal is present, then diagnosis and repair not addressed by this Bulletin may be required.
PARTS REQUIRED:
REPAIR PROCEDURE:
