TM 9-2320-272-24-4
5-9. CAMSHAFT AND GEAR MAINTENANCE (Contd)
c. Disassembly
NOTE
Before disassembling camshaft gear from camshaft, perform task
d of this procedure. If, as a result of inspection, camshaft gear
must be disassembled from camshaft, perform stops 1 through 4.
Place camshaft (2) between V-blocks. V-blocks should support camshaft (2).
1.
Remove pipe plug (5) from camshaft (2).
2.
Remove camshaft gear (1) from camshaft (2) with puller.
3.
Remove woodruff key (4) and thrust ring (3) from camshaft (2).
4.
NOTE
Before removing camshaft bushings from engine block, perform
task d of this procedure. If, as a result of inspection, bushings
must be replaced, perform step 5.
Remove seven camshaft bushings (6) from cylinder block (7) with cam bushing replacer.
5.
d. Cleaning and Inspection
WARNING
Drycleaning solvent is flammable and toxic. Do not use near open
flame and always have a fire extinguisher nearby when solvents
are used. Use only in well-ventilated places, wear protective
clothing, and dispose of cleaning rags in approved container.
Failure to do this may result in injury or death to personnel and/or
damage to equipment.
Clean camshaft (2), camshaft gear (1), and thrust washer (3) with drycleaning solvent and inspect
1.
for cracks, breaks, or pits. If cracked, pitted, or broken, discard.
Measure outside diameter of camshaft journals (8) using micrometer. If outside diameter is less
2.
than 1.996 in. (50.70 mm), replace camshaft (2).
Measure thickness of thrust ring (3). If thickness is less than 0.083 in. (2.11 mm), discard thrust
3.
ring (3).
Clean seven camshaft bushings (6) with drycleaning solvent and inspect for breaks, cracks, or pits.
4.
If broken, cracked, or pitted, discard.
Measure inner diameter of seven camshaft bushings (6) with telescoping gauge. If inner diameter
5.
exceeds 2.001 in. (50.83 mm), discard.
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