DeVille V8-4.6L VIN 9 (1995)
Oil Pan: Customer Interest
Oil Pan - Leaks at Lower Crankcase Attaching Bolts
File In Section: 6 - Engine
Bulletin No.: 67-61-07
Date: February, 1996
Subject:
Oil Leaks from Oil Pan to Lower Crankcase Attaching Bolts (Clean Bolt/Apply Sealant)
Models:
1993 Cadillac Allante
1994-96 Cadillac Concours, DeVille, Eldorado, Seville
1995-96 Oldsmobile Aurora
with 4.0L, 4.6L Engine (VINs 9, Y, C - RPOs L37, LD8, L47)
Condition
Some engines may exhibit engine oil leaks sourced at oil pan to lower crankcase attaching bolts and bolts attaching the brace between the transaxle and
engine oil pan.
Cause
This condition may be caused by porosity in the lower crankcase area near the oil pan bolt threads. This type of leak would show oil leaking at or near
the head of the fastener affected.
Correction
To correct porosity leaks in these areas, use the following procedure:
1.
Remove the bolt which is leaking.
2.
Thoroughly clean the bolt hole with brake clean or suitable equivalent cleaner.
3.
Thoroughly blow out bolt hole with shop air (20 psig maximum pressure).
4.
Thoroughly clean the bolt with brake cleaner or suitable equivalent cleaner.
5.
Apply a moderate amount of Loctite(R), P/N 12345382 (Blue Service removable) threadlocker/sealant to bolt.
6.
Install bolt and torque to 9.5 Nm (85 lb in.).
Engines previously returned through the engine exchange program for this type of leak should instead be repaired using this procedure.
Warranty Information
For vehicles repaired under warranty, use as shown.
