Crankcase Breather Ejects Oil - Perkins 854F-E34T Troubleshooting Manual

42
Symptom Troubleshooting
(Table 11, contd)
Troubleshooting Test Steps
9. Inspection of the Coolant Pump
A. Inspect the impeller of the coolant pump for damage and/or
erosion.
10. Cylinder Head Gasket
Switch off the engine and allow the engine to cool to below normal
working temperature. Remove the pressure cap for the coolant sys-
tem. Start the engine and inspect the coolant for the presence of
bubbles or discoloration of the coolant.
Note: If bubbles are present in the coolant or the coolant is discol-
ored, combustion gases may be entering the cooling system.

Crankcase Breather Ejects Oil

The crankcase breather includes a pressure relief
valve that prevents a build-up of excessive pressure
in the breather system.
This document has been printed from SPI2. NOT FOR RESALE
Values
Coolant pump Result The coolant pump is damaged or not operating
correctly.
If necessary, replace the coolant pump. Refer to Disas-
sembly and Assembly, "Water Pump - Remove" and Disas-
sembly and Assembly, "Water Pump - Install".
Result The coolant pump is not damaged and the pump is
operating correctly.
Proceed to Test Step 10.
Cylinder Head Result: Bubbles are present in the coolant or the coolant
gasket is discolored.
Check the cylinder head gasket. Refer to the recom-
mended action for the cylinder head gasket within Trouble-
shooting, "Oil Contains Coolant".
Check the cylinder head for flatness. Refer to the recom-
mended action for checking flatness of the cylinder head
within Systems Operation, Testing, and Adjusting, "Cylin-
der Head - Inspect".
Result: There is no evidence of gas leakage into the cool-
ing system.
Contact the Dealer Solution Network (DSN).
i05991949
Illustration 17
(1) Crankcase pressure relief valve
In normal operation of the engine, the pressure relief
valve remains closed. If there is evidence of oil
staining around pressure relief valve (1), perform the
following procedure in order to diagnose the fault.
UENR0612
Results
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