Jaguar XJ (X350). Manual — part 299

bearing's 0.07

•

Other bearing to outer
bearing's 0.05

Camshaft journal diameter standard out of round (mm) 0.005

Maximum permitted cylinder head warp (mm)

0.125

Lubrication system - Vehicles with 3.0L engine

Capacity

Liters

Engine oil with filter 6.5

Lubrication system - Vehicles with 3.5L engine

Capacity

Liters

Engine oil with filter 6.8

Lubrication system - Vehicles with 4.2L engine without supercharger

Capacity

Liters

Engine oil with filter 6.8

Lubrication system - Vehicles with 4.2L engine with supercharger

Capacity

Liters

Engine oil with filter 7.6

General procedures

Bearing Inspection

1. Inspect bearings for the following defects.
1. Cratering - fatigue failure

2. Spot polishing - incorrect seating.

3. Imbedded dirt engine oil.

4. Scratching - dirty engine oil.

5. Base exposed - poor lubrication.

6. Both edges worn - journal damaged.

7. One edge worn - journal tapered or bearing not seated.

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Camshaft Bearing Journal Clearance

1. NOTE:

Make sure that the following stages are followed exactly. The tappets or followers must
be removed to carry out this measurement.

NOTE:

Make sure that the camshaft is to specification.

NOTE:

The bearing caps and journals should be free from engine oil and dirt.

Position on a length of plastigage on the bearing cap.

•

Insert the camshaft, without lubrication, into the cylinder head.

•

Position a plastigage strip, which should be equal to the width of the bearing cap, on the

bearing journal.

2. Install the camshaft bearing caps.

•

Follow the relevant tightening sequence.

3. NOTE:

Do not strike the bearing caps.

Remove the camshaft bearing caps.

•

Follow the relevant loosening sequence.

4. Using the special tool, read off the measurement.

•

Compare the width of plastigage with the plastigage scale.

•

The value that is read off is the bearing clearance.

•

If the values are not to specification install a new camshaft.

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