TROUBLESHOOTING
TM 5-3805-263-14&P-2
TESTING AND ADJUSTING
Cause
Defect In Core of Oil Cooler
Defect in Head Gasket
10. OIL IN COOLING SYSTEM
Connection
Install a new core in the oil cooler.
Install a new head gasket.
11. MECHANICAL NOISE (KNOCK) IN ENGINE
Cause
Failure of Bearing For Connecting
Rod
Damage to Timing Gears
Damage to Crankshaft
Connection
Inspect the bearing for the connecting rod and the bearing surface on
the crankshaft. Install new parts when necessary.
Install new parts where necessary.
Make replacement of the crankshaft.
12. FUEL CONSUMPTION TOO HIGH
Cause
Fuel System Leaks
Fuel and Combustion Noise (Knock)
Correction
Large changes in fuel consumption may be the result. Inspect the fuel
system for leaks and make repairs as necessary.
Small increases in fuel consumption may be the result of fuel nozzles
with defects, rough running, or factors causing loss of power. See
Item 3 and Item 6.
Wrong Fuel Injection Timing
Make an adjustment to fuel injection timing.
13. LOUD NOISE FROM VALVES OR VALVE DRIVE COMPONENTS
Cause
Correction
Damage to Valve Spring(s)
Damage to Camshaft
Damage to Valve Lifter
Make replacement of parts with damage.
Make replacement of parts with damage. Clean engine thoroughly.
Clean engine thoroughly. Make a replacement of the camshaft and
valve lifters. Look for valves that do not move freely. Make an
adjustment to valve clearance, See the Subject VALVE CLEAR-
ANCE in Testing and Adjusting.
Damage to Valve(s)
Make a replacement of the valve(s) and make an adjustment as
necessary.
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