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Chapter 2. DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-10-3930-243-340031
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TM-10-3930-243-34 Truck Lift Fork Diesel Engine Pneumatic Tired Wheels Rough Terrain 10 000 lb. Capacity 24 Inch Load Center Manual
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Section III. GENERAL MAINTENANCE - TM-10-3930-243-340033
Table 2-1. Troubleshooting-Continued
Corrective Action
Probable Cause
Malfunction
c. Replace or repair valves (para 3-
c. Valves defective.
20).
d. Repair or replace pump (para 3-
d. Water pump defective.
8).
a. Replace or repair injector (para 3-
a. Fuel injector defective.
5. Engine Exhaust Smokey.
13).
b. Replace rings (para 3-26).
b. Piston rings defective.
c. Replace piston (para 3-26).
c. Piston cracked or broken.
a. Replace piston or connecting rod
a. Piston or connecting rod broken.
6. Engine Stops Suddenly.
b. Replace camshaft or camshaft
b. Camshaft or camshaft gear
defective.
c. Replace crankshaft (para 3-33).
c. Crankshaft defective.
a. Tighten
or replace flywheel (para
a. Flywheel loose or defective.
7. Engine Noisy.
3-21).
b. Replace
bearings (para 3-26).
b. Connecting rod bearings defective.
c. Replace
bearings (para 3-32).
c. Main bearings defective.
d. Replace
d. Piston pins loose or broken.
a. Replace
a. Oil pump defective.
8. Engine  Has
Low
or
No
Oil
b. Replace
bearings (para 3-32).
b. Main bearings defective.
Pressure.
c. Replace
bearings (para 3-26).
c. Connecting rod bearings defective.
d. Replace
units.
d. Sending units defective.
a. Replace armature (para 3-9).
a. Starter armature defective.
9. Starter Fails to Crank Engine.
b. Replace flywheel ring gear (para
b. Flywheel ring gear defective.
c. Charge or replace (TM 10-3930-
c. Batteries low.
243-12).
a. Replace ring (para 3-26).
a. Piston rings defective.
10. Engine Oil Consumption High.
b. Replace piston (para 3-26).
b. Piston defective.
c. Replace sleeves (para 3-26).
c. C ylinder sleeves defective.
d. Replace guides (para 3-19).
d. Valve guides worn.
e. Repair leaks.
e. Check for leaks.
a. Replace brush holders (para 3-9).
a. Generator brush holders defective.
11. Engine  Generator  Ammeter
b. Adjust or replace.
b. Regulator faulty.
Shows Low or No Charging Rate
When Batteries Are Low.
Replace generator (para 3-9).
Engine generator field winding.
12. Engine Generator Ammeter
grounded
Shows Charge When Batteries
Are Fully Charged.
a. Replace armature (para 3-9).
a. Armature shorted or grounded.
13. Generator Overheats.
b. Replace bearings (para 3-9).
b. Bearing defective.
a. Replace or repair torque convertor
a. Torque convertor defective.
14. Truck Will Not Move.
b. Replace or  repair transmission
b. Transmission defective.
c. Replace or  repair  differential
c. Differential defective.
a. Repair pump (para 3-71).
a. Hydraulic pump defective.
15. Forks Will Not Lift.
b. Repair cylinder (para 3-73).
b. Lift cylinder defective.
c. Replace valve (para 3-72).
c. Control valve defective.
a. Repair cylinder (para 3-73).
a. Tilt cylinder defective.
16. Forks Will Not Tilt.
b. Replace valve (para 3-72).
b. Control valve defective.
c. Repair pump (para 3-71).
c. Hydraulic pump defective.
a. Repair cylinder (para 3-64).
a. Steering cylinder defective.
17. Excessive Looseness in Steering.
b. Repair valve (para 3-59).
b. Steering valve defective.
2-2

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