Jack up the engine as required, and remove the front engine support (5).
Remove the capscrews (7) and plain washers (8), and separate the front support (10) from the front
Remove the crankshaft pulley and vibration damper in accordance with paragraph 9-32.
Remove the trunnion bushing (12) and oil seal (13).
Repair. Weld cracks in the front supports (10 and 11) in accordance with MIL-STD-248.
Install trunnion bushing (12) and oil seal (13).
Install the crankshaft pulley and vibration damper in accordance with paragraph 9-32.
Position front support (10) and front support (I1) and join with capscrews (7) and plain washers (8). Cross-
tighten the hexagon head capscrews (7) to 200 to 220 pound-feet (271 to 298 newton-meters).
Position the front engine support (5) under the engine.
Lower the jack slightly, and install the hexagon head capscrews (1), bevel washers (4), lockwashers (3),
and hexagonal nuts (2). Do not tighten at this time.
Lower the engine completely, and remove the jack and wooden bock.
If removed, install the grease fitting (9) in the front engine support (10).
Tighten all hexagon head capscrews (1) and hexagonal nuts (2) to 200 pound-feet (271 newton-meters).
Lubricate the trunnion bushing (12) at the grease fitting (9) using MIL-G-10924.
Install the cooling fan shroud in accordance with the Operator and Organizational Maintenance Manual.
9-37. INSPECTION COVER MAINTENANCE.
Remove each inspection cover (see Figure 9-67) by removing attaching capscrews and lockwashers.
Remove and discard the gasket. Clean all traces of the old gasket from the inspection cover and cylinder
Coat the new gasket with a thin film of sealant, MIL-S-451 80, and install gasket.
Install the inspection cover and secure with lockwashers and capscrews. Cross-tighten the capscrews to
30 to 35 pound-feet (41 to 47 newton-meters).
9-38. OIL PAN ASSEMBLY MAINTENANCE.
Place a container having a capacity of at least 35 gallons (132 liters) under the overboard drain, open the
drain valve (4, Figure 9-68), and allow the oil to drain.
Remove lube oil hoses and fittings associated with the prelube pump B3, oil sight gage, lubricant
temperature thermostat S1 01, lube oil heater Hi 13, and lubricant temperature switch OT2 from the oil
pan, and remove the on engine duplex fuel filter set and by-pass oil filter set in accordance with the
Operator and Organizational Maintenance Manual.
Remove the overboard drain hose from the adapter (4) and the filter return line from the adapter (14).
Place a drain pan under the oil pan assembly to catch any remaining oil, and remove the drain plugs (1),
and the drain valve (4) with the adapter (5) attached. Do not remove the threaded inserts (3) unless
If it is necessary to replace the drain valve (4) remove the adapter (5) from the valve.