5.0 Oil Rear Of Engine PDI (SSM51477)

5.0 OIL REAR OF ENGINE PDI

TECHNICAL SERVICE BULLETIN

SERVICE INFORMATION

(Symptom 401000 Oil System Concerns)

ISSUE

Land Rover have been receiving reports of alleged rear engine oil leaks on 5.0 gasoline engines found at PDI.

CAUSE

The oil found is very unlikely to be from a porous engine block as per Technical Bulletin LTB00283 , this concern was closed in May 2010. All engines returned post May 2010 build, that have been replaced for alleged oil leaks as per Bulletin LTB00283 have been tested and found not to be leaking.

Root cause is likely to be -

1. Too much anti corrosion oil applied to the flex plate during manufacture of the engine which is then collecting around the bell housing giving the impression that an engine oil leak exists. The supplier of the engine has been informed of this concern and they are now checking all engines prior to dispatch.
2. The oil could be coming from the threaded plug on the back upper corner of the cylinder block as described in SSM 49817 . If this leaks, the oil can run down and gather in and around the bottom of the bell housing.

ACTION

If an oil substance is found in the vicinity of the rear of the engine at PDI then the first step is to thoroughly clean the area and run the vehicle and re-check. If no further oil is evident after the clean and re-check, then the root cause will have been too much anti corrosion oil as described in the cause section of this SSM. At this stage no further action is necessary and the rest of the PDI inspection can be carried out as normal.

In the unlikely event of the oil returning after the clean and re-check then only at this stage should the transmission be removed for access to the rear of the engine block. To aid diagnosis a locally sourced engine oil fluorescent tracer dye should be added to the engine oil and the engine run (the engine can be run with the transmission removed for test purposes). Then using an ultraviolet inspection lamp even the smallest leak should be quickly identified.

Please raise a completed repair EQPR when root cause has been diagnosed.