T M 5 - 6 1 1 5 - 5 8 4 - 3 4N A V F A C P - 8 - 6 2 2 - 3 4T O - 3 5 C 2 - 3 - 4 5 6 - 2T M - 0 5 6 8 C - 3 4Figure 7-5. Measuring Top Dead Center7-5. FLYWHEELHOUSING.Figure 7-6. Testing Oil Coolerc. Test (see figure 7-6).(1) Plug the oil cooler outlet using suitable plug.a. Remove flywheel per paragraph 7-4. Removeflywheel housing (see figure 7-3). Remove screws (6),(2) Connect the oil cooler in suggested test set-lockwashers (7) and washers (8) while supportingup (see figure 7-6).housing (5). Remove flywheel housing.b. Clean and Inspect. Inspect flywheel housing forcracks or dents. Wipe interior of housing with cleancloth. Check to see that pointer is not bent and se-curely mounted.c. Install. Mount flywheel housing (5) to the engineusing screws (6), lockwashers (7) and washers (8).7-6. OIL COOLER.a. Remove. Refer to Operator/Crew and Organiza-tional Maintenance Manual and remove oil cooler.b. Clean and Inspect. In a suitable area clean oilcooler using a brush and fuel oil. Inspect for leaks,bent fins and/or bad inlet and outlet threads.(3) Apply 25 psi air pressure to the oil cooler.(4) Close the valve and monitor the pressure. Adrop in air pressure indicates a leak in the oil cooler.7-7. BLOWERWHEELASSEMBLY.a. Inspect (see figure 7-7).(1) Refer to Operator/Crew and OrganizationalMaintenance Manual and remove blower housing.(2) Check blower wheel (4) for cracks or brokenfins. Check for free play between blower wheel andhub. Replace torsion damper assemblies (6) if freeplay is present.7 -6
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