52 KENR6933
Troubleshooting Section
2. Check for leaks in the oil cooler assembly. Refer
to Testing and A
djusting, “Cooling System” for the
correct procedure. If a leak is found, install a new
oil cooler. Refer to Disassembly and Assembly,
“Engine Oil Co
oler - Remove” and Disassembly
and Assembly, “Engine Oil Cooler - Install” for the
correct procedure.
Cylinder Head Gasket
1. Remove the cy
linder head. Refer to Disassembly
and Assembly, “Cylinder Head - Remove” for the
correct procedure.
2. Inspect the cylinder head gasket for faults and any
signs of leakage.
3. To fit a new cylinder head gasket, refer to
Disassembly and Assembly, “Cylinder Head -
Install” fo
r the correct procedure.
4. If there was no obvious signs of a faulty head
gasket proc
eed to “Cylinder Head”.
Cylinder Head
1. Check the cylinder head for flatness. Refer to
Testing and Adjusting, “Cylinder Head - Inspect”
for the cor
rect procedure.
2. Check the mating face of the cylinder head for
faults and
signsofleakage.Ifafaultisfound,
replace the cylinder head. If signs of leakage are
found, determine the cause of the leakage. Refer
to Testing
and Adjusting, “Cylinder Head - Inspect”
for the correct procedure.
3. If the cyl
inder head is flat and if the cylinder head
does not have any faults, refer to “Cylinder Block”.
Cylinder
Block
Inspect the top face of the cylinder block for faults
and signs
of leakage. If a fault is found, replace
the cylinder block. If signs of leakage are found,
determine the cause of the leakage. Refer to Testing
and Adjus
ting, “Cylinder Block - Inspect” for the
correct procedure.
Assembl
yafterRepair
1. Install the cylinder head. Refer to Disassembly
and Asse
mbly, “Cylinder Head - Install”.
2. Replenish the engine with clean engine oil to
the corr
ect level. Refer to the Operation and
Maintenance Manual, “Engine Oil and Filter -
Change” for more information.
3. Fill the cooling system. Refer to the Operation and
Maintenance Ma
nual, “Cooling System Coolant
(ELC) - Change”.
i02414532
Engine Vibration
Note: This is not an electronic system fault.
Refer to Testing and Adjusting for information on
determining the cause of this condition.
Probable Causes
•
Vibration damper
•
Engine supports
•
Low compression (cylinder pressure)
•
Individual malfunctioning cylinder
•
Electronic unit injectors
Recommended Actions
Vibration Damper
Check the vibration damper for damage. Install a
new vibration damper, if necessary. Inspect the
mounting bolts for damage and/or for wear. Replace
any damaged bolts. Refer to Disassembly and
Assembly, “Vibration Damper and Pulley - Remove”
and Disassembly and Assembly, “Vibration Damper
and Pulley - Install”.
Ensure that the repairs have eliminated the problem.
If the vibration is still present proceed to “Engine
Supports”.
Engine Supports
1. Check for any of the following conditions:
•
Loose engine supports
•
Loose mounting brackets or broken mounting
brackets
•
Loose bolts
•
Omitted bolts
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