TM 10-3950-672-24-2
Inspect the gear teeth for wear and damage. Look for
cracks at the root of the teeth.
Measure the bearing journals and valve lobes.
Limits
Journal
Minimum Diameter: 53.962mm (2.1245 inches]
Valve Lobes: (Minimum Diameter at Peak of Lobe)
Intake Minimum Height: 47.040mm (1.852 inches]
Exhaust Minimum Height: 46.770mm [1.841 inches]
Lift Pump Lobe Diameter Minimum: 35.5mm [1.398
inches]
Camshaft Bushing inspection
Caution: If the bushing is worn beyond the limit,
install a new service bushing.
Inspect the camshaft bore for damage or excessive
wear.
The limit for the bushing in the No. 1 bore is the same
as for the other bores without bushings.
Limit
Inside Diameter: 54.133mm [2.1312 inches]
Note: If the bores without a bushing are worn beyond
the limit, the engine must be removed for machining
and installation of service bushings or replacement of
the cylinder block.
Remove the bushing from the Number 1 bore.
5-201