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Page Title:
Table 8. Engine System (Unit) Troubleshooting Procedures - Continued. |
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 TM 10-3930-660-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 8. Engine System (Unit) Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Check for contaminated fuel.
Verify by operating the engine
5.
Engine Starts But Will Not Keep Running -
with clean fuel from a temporary
Continued.
supply tank. Drain and flush the
fuel/hydraulic tank (WP 0032
1. Check for idle speeds too
Adjust idle speed by adjusting
6.
Rough Idle (Irregularly Firing or Engine
low for the accessories.
Shaking).
accelerator cable as required
2. Check for high pressure fuel
Check for leaks in the high
leak.
pressure lines, fittings, injection
sealing washers or delivery
valve seals. Replace defective
parts as required (WP 0034 00 or
3. Check for air in the fuel
Bleed the fuel system (WP 0034
system.
repair the leak.
1. Fuel injection lines leaking.
Inspect high pressure lines,
7.
Engine Runs Rough or Misfiring.
fittings, injector sealing washers
or delivery valves for leaks.
Replace components as
necessary (WP 0034 00 or WP
2. Check for air in the fuel or
Check for flow through the filter
inadequate fuel supply.
and bleed the system (WP 0034
correct the air leak.
3. Check for contaminated fuel.
Verify by operating the engine
with clean fuel from a temporary
tank. Drain and fill fuel/
hydraulic tank if necessary (WP
1. Check for overloaded
Verify high idle speed without
8.
Engine RPM Will Not Reach Rated Speed.
engine.
load. Investigate operation to be
sure correct gear range is being
used (TM 10-3930-660-10).
2. Check for accelerator
Adjust accelerator cable linkage
linkage wear or incorrect
adjustment.
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