Perkins 4006D-E23TA Operation And Maintenance Manual page 82

82
Maintenance Section
Water Pump - Inspect
Excessive coolant leakage may indicate the need to
replace a water pump. Refer to Operation and
Maintenance Manual, "Water Pump - Inspect" for
more information. If necessary, 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, etc.
• Ensure that the areas around the rotating parts are
clear.
• Inspect the alternator belt and fan drive belts for
cracks, breaks or other damage.
• Inspect the wiring harness for damage.
Belts for multiple groove pulleys must be replaced as
matched sets. If only one belt is replaced, the belt will
carry more load than the belts that are not replaced.
The older belts are stretched. The additional load on
the new belt could cause the belt to break.
Water Pump - Inspect
A failed water pump may cause severe engine
overheating problems that could result in the
following conditions:
• Cracks in the cylinder head
• A piston seizure
• Other potential damage to the engine
Note: The water pump seal is lubricated by the
coolant in the cooling system. A normal condition is
that a small amount of leakage to occur as the engine
cools down and parts contract.
Visually inspect the water pumps for leaks. The water
pumps are not serviceable items. Replace a leaking
water pump. Refer to Disassembly and Assembly for
more information.
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