Tool Required
J 7872 Magnetic Base
Dial Indicator
- Clean the camshaft in solvent.
Caution: Wear safety glasses in order to avoid eye damage.
- Dry the camshaft with compressed air.
- Inspect the camshaft for the following conditions:
• | Worn, scored, or damaged bearing journals |
- Measure the camshaft journals
with a micrometer.
Refer to
Engine Mechanical Specifications
.
- Measure for a bent camshaft or excessive camshaft runout using J 7872
.
5.1. | Mount the camshaft in V-blocks between centers. |
5.2. | Use the J 7872
in
order to measure for a bent camshaft. |
Refer to
Engine Mechanical Specifications
.
- Replace the camshaft if runout exceeds specifications.
- Inspect the camshaft bearings and bearing cap surfaces for the
following:
• | Overheating from lack of lubrication |
- Inspect the bearing clearances with gauging plastic.
Refer to
Engine Mechanical Specifications
.
- Inspect the camshaft for excessive end play.
Refer to
Engine Mechanical Specifications
.
- The camshaft bearing surfaces are machined into the cylinder head
and are not serviceable.