2.
Remove the air intake pipe (1). Visually inspect the
piping for the presence of oil. A small amount oil
will be expected, this oil is due to the breather
system design. Clean the interior of the pipe in
order to prevent dirt from entering during
reassembly.
3.
Check for obvious heat discoloration of the
turbocharger. Check for any loose bolts or any
missing bolts. Check for damage to the oil supply
line (3) and the oil drain line (2). Check for cracks
in the housing of the turbocharger. Ensure that the
compressor wheel can rotate freely. Check that
there are no visual signs of damage to the
compressor wheel.
4.
Check for the presence of oil. If oil is leaking from
the back side of the compressor wheel, there is a
possibility of a failed turbocharger oil seal.
The presence of oil may be the result of extended
engine operation at low idle. The presence of oil
may also be the result of a restriction of the line for
the intake air (clogged air filters). A restriction can
cause the turbocharger to slobber.
5.
Install the air intake pipe to the turbocharger
housing. Ensure that all clamps are installed
correctly and that all clamps are tightened
securely. For more information, refer to Systems
Operation, Testing, and Adjusting, “Turbocharger -
Inspect”.
i05859232
Walk-Around
Inspection
Inspect
the
Engine
for
Leaks
and
for
Loose
Connections
A
walk-around
inspection
should
only
take
a
few
minutes.
When
the
time
is
taken
to
perform
these
checks,
costly
repairs
and
accidents
can
be
avoided.
For
maximum
engine
service
life,
make
a
thorough
inspection
of
the
engine
compartment
before
starting
the
engine.
Look
for
items
such
as
oil
leaks
or
coolant
leaks,
loose
bolts,
worn
belts,
loose
connections,
and
trash
buildup.
Make
repairs,
as
needed:
• The guards must be in the correct place. Repair
damaged guards or replace missing guards.
• Wipe all caps and plugs before the engine is
serviced in order to reduce the chance of system
contamination.
NOTICE
For any type of leak (coolant, lube, or fuel) clean up
the fluid. If leaking is observed, find the source and
correct the leak. If leaking is suspected, check the flu-
id levels more often than recommended until the leak
is found or fixed, or until the suspicion of a leak is
proved to be unwarranted.
NOTICE
Accumulated grease and/or oil on an engine is a fire
hazard. Remove the accumulated grease and oil. Re-
fer to this Operation and Maintenance Manual, “En-
gine - Clean” for more information.
• Ensure that the cooling system hoses are correctly
clamped and that the cooling system hoses are
tight. Check for leaks. Check the condition of all
pipes.
• Inspect the water pump for coolant leaks.
Note:
The water pump seal is lubricated by the
coolant in the cooling system. A small amount of
leakage is normal and can occur as the engine cools
down and the parts contract.
Excessive coolant leakage may indicate the need to
replace the water pump. Remove the water pump.
Refer to Disassembly and Assembly , “Water Pump -
Remove and Install”. For more information, consult
your Perkins dealer or your Perkins distributor .
• Inspect the lubrication system for leaks at the front
crankshaft seal, the rear crankshaft seal, the oil
pan, the oil filters, and the rocker cover.
• Inspect the piping for the air intake system and the
elbows for cracks and for loose clamps. Ensure
that hoses and tubes are not contacting other
hoses, tubes, wiring harnesses.
• Ensure that the areas around the rotating parts are
clear.
• Inspect the alternator belts and any accessory
drive belts for cracks, breaks, or other damage.
• Inspect the wiring harness for damage.
112
SEBU9068-03