KENR9126 41
Troubleshooting Section
•
Cylinder head gasket
•
Cylinder head
•
Cylinder bloc
k
Recommended A
ctions
Engine Oil Cooler
1. Drain the engine lubricating oil from the engine.
2. Check for le
aks in the oil cooler assembly. If a leak
is found, install a new oil cooler.
Cylinder H
ead Gasket
1. Remove the cylinder head.
2. Inspect the cylinder head gasket for faults and any
signs of leakage.
3. If necessary, install a new cylinder head gasket.
4. If there w
as no obvious signs of a faulty head
gasket proceed to “Cylinder Head”.
Cylinde
rHead
1. Check the cylinder head for flatness.
2. Check the mating face of the cylinder head for
faults and signs of leakage. If a fault is found,
replac
e the cylinder head. If signs of leakage are
found, determine the cause of the leakage.
3. Check
the internal core plugs in the cylinder head
for signs of leakage.
4. If the
cylinder head is flat and if the cylinder head
does not have any faults, refer to “Cylinder Block”.
Cyli
nder Block
Inspect the top face of the cylinder block for faults
and s
igns of leakage. If a fault is found, replace
the cylinder block. If signs of leakage are found,
determine the cause of the leakage.
Assembly after Repair
1. Ins
tall the cylinder head.
2. Remove the oil filter element. Install a new engine
oi
l filter element. Fill the engine with clean engine
oil to the correct level.
i04010436
Coolant Temperature Is Too
High
Note: This is
not an electronic system fault.
Probable Cau
ses
•
Coolant level
•
Coolant pressure relief valve
•
Coolant te
mperature gauge
•
Restriction in the coolant system
•
Water temperature regulator
•
Coolant p
ump
•
Cylinder head gasket
Recommended Actions
Sea Water Strainer ( if equipped)
Check th
e sea water strainer(if equipped) for dirt,
debris, and/or damage. Remove any dirt and/or
debris.
Coolant Level
1. Inspe
ct the coolant level. If necessary, add
coolant.
2. Check
the cooling system for leaks. Repair any
leaks immediately.
Pres
sure Relief Valve
1. Check that the seating surfaces of the pressure
reli
ef valve and the radiator cap are clean and
undamaged.
2. Che
ck operation of the pressure relief valve. If
necessary, clean the components and/or replace
the components.
Coolant Temperature Gauge
Co
mpare the reading for the coolant temperature
from the electronic service tool to the reading for the
coolant temperature from a calibrated test gauge.
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