ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
CAMSHAFT.
a. Removal.
(1)
Shut down generator set.
(2)
Remove crankcase cover, refer to paragraph 5.16.a.
(3)
Remove cylinder head assembly, refer to paragraph 5.13.a.
(4)
Remove fuel injection pump, refer to paragraph 5.15.a.
CAUTION
Be careful when removing cam shaft to keep exhaust and intake valve tappets
separate.
(5)
Pull camshaft (Figure 5-17), valve tappets, and fuel injection pump tappet from cylinder block.
(6)
If necessary, remove large bearing from crankcase cover.
(7)
If necessary, remove small bearing from cylinder block.
b. Inspection.
(1)
Inspect camshaft for cracks, corrosion, worn gears, and other damage.
(2)
Measure diameter of camshaft at bearing surfaces:
(a)
Crankcase cover side - 0.9803 - 0.9840 in. (24.90 - 24.99 mm).
(b)
Cylinder block side - 0.5874 - 0.5906 in. (14.92 - 15.00 mm).
(3)
Inspect bearings for excessive play, signs of overheating, scoring, and other damage.
(4)
Measure inside diameter of camshaft bearings:
(a)
Crankcase cover - 0.9839 - 0.9850 in. (24.990 - 25.02 mm).
(b)
Cylinder block - 0.5912 - 0.5919 in. (15.016 - 15.034 mm).
(5)
Measure inside diameter of crankcase cover bearing housing, only if bearing has to be removed,
[2.0451 - 2.0455 in. (51.945 - 51.965 mm)].
(6)
Measure inside diameter of cylinder block bearing housing, only if bearing has to be removed,
[0.8251 - 0.8259 in. (20.957 - 20.978 mm)].
(7)
Inspect tappet contact points for excessive or uneven wear and outer surfaces for wear and
damage.
