63
Fault Finding
CHART A12—Engine excessive vibration
Cause
Remedy
Engine not running smoothly/missing. Refer to Chart A5.
Oil level over full. Check oil level.
If the condition occurs at idle, the idle speed
is set too low for the accessories.
Check the engine idle rpm setting.
Fan damaged or accessories faulty. Check/replace the vibrating component. Refer to correct
installation procedure and torque figures.
Fan hub faulty. Inspect/replace the fan hub. Refer to correct installation procedure
and torque figures.
Engine mounts loose or broken. Check/replace the engine mounts. Refer to correct installation
procedure and torque figures.
Inlet & exhaust valve clearances set
incorrectly.
Set the valve clearances to the recommended clearances.
Engine compression low in one or more
cylinders.
Check the engine compression.
Alternator bearing worn or damaged. Check/replace the alternator.
Flywheel housing misaligned. Check/replace the flywheel alignment.
Injection pump timing incorrect. If the pump has recently been removed and replaced the timing
could be incorrect if the correct removal procedures were not
followed.
The timing can only be checked by a FIE specialist using the
correct equipment.
Drive line components worn or unbalanced. Check and inspect drive line components, such as prop-shafts.
Refer to Page 23 of this manual.
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