TM 5-3805-260-24
8.
LOUD NOISE (CLICKING) FROM VALVE COMPARTMENT
Cause
Correction
Broken Valve Spring(s) or
Install new parts where necessary. Broken locks can cause the
Locks
valve to slide into the cylinder. This will cause much damage.
Loose Bolts Holding Rocker
Tighten to 18 + 5 lb. ft. (24 + 7 N-m).
Arm Assembly
Too Much Valve Clearance
Make adjustment according to Testing and Adjusting.
9. OIL IN COOLING SYSTEM
Cause
Correction
Defect in Core of Oil Cooler
Install a new core in the oil cooler.
Defect in Head Gasket
Install a new head gasket.
10.
MECHANICAL NOISE (KNOCK) IN ENGINE
Cause
Correction
Failure of Bearing For
Inspect the bearing for the connecting rod and the bearing surface
Connecting Rod
on the crankshaft. Install new parts where necessary.
Damage to Crankshaft
Make replacement of the crankshaft.
Defect in Attachment
Repair or install new components.
11. FUEL CONSUMPTION TOO HIGH
Cause
Correction
Fuel System Leaks
Replacement of parts is needed at points of leakage.
Defect in Timing Advance
Replacement of timing advance unit is needed.
Unit
Wrong Fuel Injection Timing
Make adjustment to timing.
12.
LOUD NOISE FROM VALVES OR VALVE DRIVE COMPONENTS
Cause
Correction
Broken Valve Spring(s)
Make replacement of parts with damage.
Broken Camshaft
Make replacement of parts with damage. Clean engine thoroughly.
Broken Timing Advance Gear
Make replacement of timing advance unit.
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