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Figure 141 Removing oil cooler
4. Remove the eight bolts (M8 x 20) securing the oil
cooler to the oil cooler housing. Separate the oil
cooler from the oil cooler housing.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
4 ENGINE SYMPTOMS DIAGNOSTICS
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Figure 142 Checking the oil cooler for internal
leakage
1.
Test plate set
2.
Air pressure regulator
3.
Coolant port (open)
4.
Oil port
5. Pressure test the oil cooler following the
procedure in the Engine Service Manual. If a
leak is noticed, replace the oil cooler.
123
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