TM 10-4320-315-24
4-14. MAINTENANCE OF CAMSHAFT AND TAPPETS - (Cont)
b. INSPECT. (Figure 4-19)
(1)
Inspect camshaft gear for cracked, chipped, and broken teeth. Replace if damaged.
(2
Measure journal at drive end of camshaft. Record measurement. Correct tolerance is 1.890-1.893 In.
(48.01-48.08 mm).
Figure 4-19. Camshaft Bearings
(3)
Measure camshaft bearing bushing at points 1 and 2 in the planes A and B. If measurement does not meet
specified tolerance, install new bearing bushing. Correct tolerance is 0.015-0.027 in. (0.4-0.7 mm).
(4)
Subtract recorded camshaft journal measurement from bearing bushing measurement. If measurement does
not meet specified tolerance, replace camshaft.
c. DISASSEMBLY. (Figure 4-20)
(1)
Install removal/replacing tool (1) through front of bearing bushing (2).
(2)
Insert end support of tool behind next camshaft bore (3).
(3)
Pull bearing bushing (2) out in direction of flywheel.
(4)
Remove bearing bushing (2) and tool (1).
d. ASSEMBLY.
(1)
Install bearing bushing (2) in bore. Check that oil holes in bushing align with oil holes of crankcase.
(2)
Using removing/replacing tool (1), press bearing bushing (2) in from front of crankcase.
(3)
Keep bearing bushing straight, and press in until bushing is flush with front of crankcase bore.
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