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CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
Engine-mounted Noise Insulators
Depending on the method of attaching noise insulators on engine and
around oil pan (bolts, snap fasteners or straps), check for condition
and security. Tighten loose fasteners and repair or replace any worn or
damaged fasteners.
Check insulators around fasteners and stress points, particularly where
they may be affected by engine vibration. Repair any cracked or damaged
mounting points with suitable reinforcing plates to ensure the insulators
will remain in position.
Air Intake System
All the maintenance procedures listed under Engine Air Intake System and
Air Cleaner in this manual are applicable.
Check the induction tubing, elbow connections, clamps, brackets and
fasteners for deterioration, cracks and security. If an air leak exists
anywhere between the air cleaner and the engine, it should be repaired
immediately. This condition not only causes excessive noise, it can result
in serious damage to the engine.
Engine Fan and Shroud
Do not work on the fan with the engine running. The engine fan can
engage at any time without warning. Anyone near the fan when it
turns ‘ON’ could be seriously injured. Before turning on the ignition,
be sure that no one is near the fan.
Check all fasteners for tightness. Check for stress cracks in the shroud.
Make sure the shroud is adjusted so that it does not touch the blades.
Check the fan assembly mounting bolts for tightness. Inspect the blades
for damage. The blade assembly should be replaced if damaged.
Check clutch operation by starting the engine when it is cold, then idling it
at about 800rpm. Check that the fan remains disengaged while the engine
is warming up. When the fan clutch does engage, note the reading on
the vehicle’s panel-mounted coolant temperature gauge. If the fan clutch
engages at low engine temperatures or cycles ON and OFF more frequently
than it should (i.e. receives ‘false signals’), have the problem repaired at
an authorised Kenworth dealer.
Summary of Contents for T410
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Page 25: ...SECTION ONE OPERATING INSTRUCTIONS ...
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Page 331: ...SECTION THREE MAINTENANCE LUBRICATION SCHEDULES ...
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