TM 5-3805-261-34
ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES. (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
e.
NOT ENOUGH POWER. (cont)
Step 3.
Check the governor linkage.
If the governor linkage is not getting full travel--adjust. Refer to paragraph 3-25.
Step 4.
Check the valve clearance.
If the valve clearance is not correct--service or replace. Refer to paragraph 3-13.
WARNING
FUEL UNDER PRESSURE
When opening fuel system, do not look directly at fitting. Fuel is under pressure.
SEVERE INJURY may result if you fail to follow this procedure.
Step 5.
Check the fuel injection valves and pumps. Run the engine at an RPM that causes roughness. Loosen
a fuel line nut on the injection valve of each cylinder one at a time, then tighten.
If loosening a fuel line nut does not make a difference—replace injection valve. Refer to paragraph 3-25.
Step 6.
Check the fuel injection timing.
If the timing is not correct--adjust. Refer to paragraph 3-27.
Step 7.
Check the turbocharger for carbon deposits or other causes of friction.
If you suspect a problem with the turbocharger--contact General Support.
f.
TOO MUCH VIBRATION.
Step 1.
Check pulley and vibration damper mounting.
If the bolt or nut holding the vibration damper pulley is loose--tighten.
Step 2.
Check pulley and vibration damper.
If the pulley or vibration damper are damaged or defective--replace. Refer to paragraph 3-10.
3-6
