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TM 5-2420-222-34
Table 2-1. Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 6.
Remove valves and check valve stem seals for wear or damage (see paragraph 3-12).
Replace valves if valve stem seals are worn or damaged (see paragraph 3-12).
Step 7.
Check inside diameter of valve guides In three places (see paragraph 3-12).
Replace valve guide if inside diameter is worn or damaged (see paragraph 3-12).
Step 8.
Measure exhaust and intake valves stem diameter (see paragraph 3-12).
Replace valves if measurements are not as specified (see paragraph 3-12).
Step 9.
Check connecting rod sleeve bearings for wear (see paragraph 3-11).
Replace connecting rod sleeve bearings if worn (see paragraph 3-11).
CLUTCH ASSEMBLY
10.
CLUTCH SLIPS.
Step 1.
Check for worn or broken shifter levers.
Replace shifter levers (see paragraph 8-14).
Step 2.
Remove transmission top cover (see paragraph 8-12 or 8-13). Check to see if gears rotate with
clutch pedal depressed.
Replace worn or damaged friction plugs (see paragraph 8-4).
Step 3.
Remove transmission top cover (see paragraph 8-12 or 8-13). Check to see if transmission oil
pump is working properly.
Repair or replace transmission oil pump (see paragraph 8-19).
11.
CLUTCH PEDAL VIBRATES.
Step 1.
Check for bent or damaged engine crankshaft.
Replace engine crankshaft (see paragraph 3-8).
Step 2.
Check for loose or damaged engine flywheel and ring gear.
Repair or replace engine flywheel and ring gear (see paragraph 3-9).
12.
CLUTCH NOISY.
Step 1.
Check for loose clutch disk at hub rivets (see paragraph 4-1 or 4-2).
Replace clutch disk (see paragraph 4-1 or 4-2).
2-7
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