SERVICE MANUALLUBRICATING OIL PUMP, OIL FILTERS & COOLERSection 82.Drain and blow out any solvent and foreignmatter inside of the coolers. Be certain that allpassages are clean and clear before Installation.NOTE: DO NOT use wire brushes or steel scrapersfor 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. 11and 12.CAUTION! Use adequate safetyprecautions when performing thefollowing tasks.Figure 11. - Pressure Plate with Air Couplingb.Fasten the plates, using new oil coolergaskets, to the cooler.c. Install an air pressure hose to the cooler asshown in Fig. 13.Figure 13. - Air Hose to Coolerd.Immerse the assembly in a container ofwater, heated to 49°C (120F). Thisstabilizes the metal parts of the cooler.e. Apply 935 kPa (150 psi) air pressure whileimmersed.f. Replace if there are moving or growingbubbles after one minute.Figure 12. - Pressure PlateCGES-185-3PRINTED IN UNITED STATES OF AMERICAPage 9
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