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 TM 55-1905-223-24-3
Table 3-1. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
19.
Piston noise.
STEP 1.
Check to see if pin or bushing is loose, worn, or not installed correctly.
Replace piston and ring assembly (para. 3-24).
STEP 2.
Check for cracked or broken piston.
Replace piston and ring assembly (para. 3-24).
STEP 3.
Check to see if connecting rod(s) are bent or out of alignment.
Replace connecting rods(s) (para. 3-24).
STEP 4.
Check to see if piston rings are worn or are out of alignment.
Replace connecting rod and piston assembly (para. 3-24).
STEP 5.
Check for worn or broken piston rings.
Replace piston and ring assembly (para. 3-24).
STEP 6.
Check to see if liners are worn or out-of-round.
Replace cylinder block (para. 3-27).
20.
Generator voltage unsatisfactory (voltage regulator operating properly).
STEP 1.
Check for defective generator or exciter.
Test generator (para. 3-13).
21.
No voltage output from generator.
STEP 1.
Check for open or shorted exciter leads or windings.
Test generator (para. 3-13).
22.
Generator voltage fluctuates, even though voltage regulator and accessories
are operating properly.
STEP 1.
Check for intermittent fault within the generator windings.
Test generator (para. 3-13).
23.
Engine surges under load at rated speed, throttle wide open.
STEP 1.
Check fuel pump for incorrect assembly or adjustment.
Replace fuel pump (para. 2-37).
24.
Engine surges at high idle.
STEP 1.
Check fuel pump for incorrect assembly or adjustment.
Replace fuel pump (para. 2-37).
3-7
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