Jaguar XJ (X350). Manual — part 300

Camshaft Bearing Journal Diameter

1. Determine the diameter of the camshaft journals.

•

Using a micrometer measure the diameter at 90 degrees intervals to determine if the

journals are out-of-round.

•

Measure at two different points on the journal to determine if there is any tapering.

•

If the measurements are out of the specified range, install a new camshaft.

Camshaft End Play

1. NOTE:

Make sure that the camshaft is to specification.

Using the special tool, measure the end play.

•

Slide the camshaft in both directions. Read and note the maximum and minimum values

on the dial indicator gauge.
End play = maximum value minus minimum value.

•

If the measurement is out of specification, install new components.

www.

Camshaft Lobe Lift

1. Measure the diameter (1) and diameter (2) with a vernier caliper. The difference in
measurements is the lobe lift.

Camshaft Surface Inspection

1. Inspect camshaft lobes for pitting or damage in the active area. Minor pitting is acceptable
outside the active area.

www.