
(Table 59, contd)
Troubleshooting Test Steps
Values
Results
11. Engine Oil Pump
A. Inspect the components of the engine oil pump for exces-
sive wear.
Oil pump
Result:
A component in the oil pump is not within
specification.
Repair the oil pump or replace the oil pump, if necessary. Refer
to Disassembly and Assembly, “Engine Oil Pump - Remove”
and Disassembly and Assembly, “Engine Oil Pump - Install”.
The oil pump is OK.
Proceed to Test Step 12.
12. Bearing Clearance
A. Inspect the engine components for excessive bearing clear-
ance or damaged bearings. Inspect the following components
for excessive bearing clearance:
· Crankshaft main bearings
· Connecting rod bearings
· Camshaft front bearing
· Idler gear bearing
Bearing
clearance
Result:
An engine bearing is not within specification.
Install a new bearing. Refer to Disassembly and Assembly.
Result:
All engine bearings are within specification.
If the fault is still present there may be an open circuit condition
in the oil pressure switch circuit. Refer to Troubleshooting,
“Switch Circuits - Test (Engine Oil Pressure Switch)”.
i05955328
Power Is Intermittently Low or
Power
Cutout
Is
Intermittent
Note:
Use this procedure only if the engine does not
shut down completely.
Probable Causes
• Diagnostic codes
• Electrical connectors
• ECM connection
• Fuel system inspection
• Air inlet and exhaust system
Recommended Actions
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
Note:
The procedures have been listed in order of
probability. Complete the procedures in order.
UENR0612
117
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