TM 9-4940-549-14&P
Table 3-2. Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Engine Lacks Power.
Air cleaner dirty.
Step 1.
Service air cleaner (para
Fuel filters dirty.
Step 2.
Service or replace fuel filters (paras. 39, 8-4, and 8-5).
Step 3.
Crankcase oil level too high.
Drain oil to proper level
Step 4.
Engine too cold to ignite fuel properly.
Perform cold weather starting procedures. Close radiator shutters
until the engine is operating at normal temperature.
DYNAMOTOR-WELDER
Dynamotor-Welder will Not Start when External Power Source Is Used.
Step 1.
Power selector switch in wrong position.
Set selector switch to CITY position.
Dynamotor switch defective or not properly actuated.
Step 2.
Notify your supervisor if trouble still
Actuate switch properly.
exists.
Dynamotor-Welder Overheats.
Ventilating air filters clogged.
Clean air filters (para. 3-16).
Dynamotor-Welder Rotates In Wrong Direction When External Power Source
Is used.
External power lines connected wrong.
Remove power and interchange any two incoming power leads.
3-8
