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TK 61555-2-MM-EN
•
Low oil pressure can usually be traced to the lack of oil, a faulty oil pressure regulating valve,
or worn bearings.
•
Low oil pressure is not normally caused by a faulty oil pump.
•
Use the “Low Oil Pressure Flow Chart” (
) to help diagnose low oil pressure.
Figure 12.
Low Oil Pressure Flow Chart
Engine Cooling System
The engine employs a closed, circulating type, pressurized cooling system. Correct engine
temperatures are controlled and maintained by a radiator, fan, and thermostat. The coolant is
circulated through the system by a belt driven centrifugal pump. The pump draws the coolant
from the side of the radiator, circulates it through the cylinder block and head and returns it to
the radiator. A thermostat mounted in the coolant outlet line from the cylinder head to the
radiator automatically maintains coolant temperature within the specified temperature range.
