SERVICE MANUAL
LUBRICATING OIL PUMP, OIL FILTERS & COOLER
Section 8
2.
Drain and blow out any solvent and foreign
matter inside of the coolers. Be certain that all
passages are clean and clear before Installation.
NOTE: DO NOT use wire brushes or steel scrapers
for removing deposits.
Inspect the Oil Cooler for leaks as follows:
1.
Perform an "Air Pressure" test as follows:
a.
Construct two plates as specified in Fig. 11
and 12.
CAUTION!
Use
adequate
safety
precautions
when
performing
the
following tasks.
Figure 11. - Pressure Plate with Air Coupling
b.
Fasten the plates, using new oil cooler
gaskets, to the cooler.
c. Install an air pressure hose to the cooler as
shown in Fig. 13.
Figure 13. - Air Hose to Cooler
d.
Immerse the assembly in a container of
water, heated to 49°C (120F). This
stabilizes the metal parts of the cooler.
e. Apply 935 kPa (150 psi) air pressure while
immersed.
f. Replace if there are moving or growing
bubbles after one minute.
Figure 12. - Pressure Plate
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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