Main Bearing Cap Bolts - Reuse Twice During Repair

12-63

MODEL
1988-94 MY Sedan (3.6L & 4.0L)
1993-96 XJS (4.0L)

12-63

DATE 11/97

Main Bearing Cap Bolts - Reuse Twice - Conditions

ISSUE:

It is now Jaguar Cars policy that the crankshaft main bearing cap bolts AJ16 and AJ6 engines should be reused twice in service, during repair operations involving removal of the main bearing cap bolts.

To be able to identify the number of times a bolt has been reinstalled, it is mandatory that bolts are marked as detailed below.

ACTION:

After reinstalling and fully tightening any main bearing cap bolt (EXCEPT where a NEW bolt has been installed), mark the bolt head with ONE punch mark, using an AUTOMATIC center-punch.

A second removal and reinstallation is permissible. A bolt showing one punch mark may be reinstalled, and marked with a second punch mark.

When removing a bolt already marked with two punch marks, it MUST be discarded.

Any bolt showing obvious signs of damage must be replaced.

PARTS INFORMATION:

DESCRIPTION PART NUMBER QTY

Bolt, main bearing cap EAC 4119 A/R

WARRANTY POLICY:

Claims for bolt replacement will not be honored unless the bolts have already been re-used twice.

WARRANTY INFORMATION:

The above has no effect on Repair Operation Times.