Quantcast Table 2-1. Troubleshooting - Continued - TM-10-3930-630-340013

 

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CHAPTER 2 DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-10-3930-630-340012
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TM-10-3930-630-34 Truck Lift Fork GED Solid Rubber Tired Wheels 4000 lbs Capacity 100 and 180 Inch Lift Manual
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Table 2-1. Troubleshooting - Continued - TM-10-3930-630-340014
TM 10-3930-630-34
Table 2-1. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. EXPLOSION IN EXHAUST.
Step 1.  Check for partially open exhaust valve.
Replace broken or defective spring (para 11-4).
Step 2.
Check for improper timing.
Check distributor, spark plugs and engine timing (TM 10-3930-630-12).
5. ENGINE RUNS IRREGULARLY.
Step 1.
Check for warped or burned valves.
Replace valves (para 11-4).
Step 2.  Check for leaking valves.
Adjust, grind or replace as necessary (para 11-4).
6. ENGINE OIL PRESSURE LOW.
Step 1.  Check relief valve for dirt or broken spring.
Clean relief valve or replace spring (para 11-14).
Step 2.  Check oil pump for clogged screen.
Clean screen (para 11-11).
Step 3.  Check oil pump for wear and damage.
Repair or replace oil pump (para 11-11).
Step 4.  Check for worn main or connecting rod bearings.
Replace worn bearings (para 11-18).
Step 5.  Check for worn camshaft bearings.
Replace worn bearings (para 11-25).
7. ENGINE OIL CONSUMPTION HIGH.
Step 1.  Check compression of engine.
Adjust or replace valves or pistons (para 11-4 and 11-18).
Step 2.  Check for stuck or damaged relief valve.
Clean or repair relief valve (para 11-14).
Step 3.  Check for worn or damaged piston rings and pistons.
Replace pistons and/or piston rings (para 11-18).
Step 4.  Check for worn bearings.
Replace bearings (para 11-18).
Step 5.
Check for worn valve guides.
Replace valve guides (para 11-4).
8. TRANSMISSION DOES NOT OPERATE PROPERLY.
Step 1.
Check for dirty or defective control valve.
Repair or replace control valve (para 12-7).
Step 2.
Check for defective transmission pump.
Repair or replace transmission pump (para 12-12).
Step 3.
Check clutch pressures.
Repair or replace clutches (para 12-13).
9. DRIVE AXLE DOES NOT OPERATE PROPERLY.
Step 1.
Check for damaged or defective differential.
Repair or replace differential (para 10-15).
Step 2.
Check for correct axle clearances.
Adjust clearances or repair axle (para 10-11).
10. ALTERNATOR NOT OPERATING PROPERLY.
Step 1.
Check for worn brushes and damaged springs.
Replace springs and/or brushes (para 4-3).
Step 2.
Check for dirty or worn commutator.
Repair commutator or replace armature (para 4-3).
Step 3.
Check for grounded or open rotor.
Replace rotor (para 4-3).
2-2

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