Jaguar XK 2004 Misc. Document Oil Weep PDF

Date of issue 5/98 Bulletin Number 303-26 Page 1 of 2
DATE
303-26
5/98V8 XJ Series/XK8
SERVICE
TECHNICAL BULLETIN
1997 MY-ON XK8 Range
1998 MY-ON V8 XJ Series
001001-ON
812256-ON
MODEL
VIN
Oil Weep – Rear Face of Cylinder Heads
Issue:
Some vehicles equipped with the AJ-V8 engine may experience oil weeps on the rear faces of
cylinder heads. The cause may be oil weeping past a plug which is expanded, during engine
manufacture, inside the inner (ie. the hole closest to the center-line of the engine) of the two
threaded holes on the back of each cylinder head. These holes (Illustration 1) are also used to
install the rear engine lifting brackets.
Action:
In case of a customer complaint of oil weepage that is found to come from the rear of the
cylinder head, install a “Dowty” oil-sealing washer and bolt in the inner hole as described below.
Clean the rear face of the cylinder head before installing the bolt and washer.
Torque: 15 Nm (11 lb ft)
JSI-3442
POSSIBLE SOURCE OF OIL WEEPAGE
ILUSTRATION 1

Summary of Content

Date of issue 5/98 Bulletin Number 303-26 Page 1 of 2DATE303-265/98V8 XJ Series/XK8SERVICETECHNICAL BULLETIN1997 MY-ON XK8 Range1998 MY-ON V8 XJ Series001001-ON812256-ONMODELVINOil Weep Rear Face of Cylinder HeadsIssue:Some vehicles equipped with the AJ-V8 engine may experience oil weeps on the rear faces ofcylinder heads. The cause may be oil weeping past a plug which is expanded, during enginemanufacture, inside the inner (ie. the hole closest to the center-line of the engine) of the twothreaded holes on the back of each cylinder head. These holes (Illustration 1) are also used toinstall the rear engine lifting brackets.Action:In case of a customer complaint of oil weepage that is found to come from the rear of thecylinder head, install a Dowty oil-sealing washer and bolt in the inner hole as described below.Clean the rear face of the cylinder head before installing the bolt and washer.Torque: 15 Nm (11 lb ft)JSI-3442POSSIBLE SOURCE OF OIL WEEPAGEILUSTRATION 1