TM 5-4310-343-35
utilizing an arbor press in conjunction with the punch of the disassembly fixture, force crankshaft (36) down to free rear
bearing (42) from shaft. Remove bearing (42).
Invert crankcase in the nest and force crankshaft down, driving shaft from front bearing (30). Remove front bearing.
(n) Slide the crankshaft (36) o the motor end of the crankcase (43). Carefully rotate the forward end of
the shaft up through the first stage opening and remove from the crankcase. Use an arbor press (approximately 1300
pound pressure) and remove the two rollpin assemblies (24). Separate the fork (25) and the wedge (23) which make up
the cam assembly and remove them.
5-9. Cleaning.
a. Use Solvasol, MIL-N-15178 and a non-metallic bristle brush to clean metallic parts. Brush out the holes, slots,
and apertures and particularly the crankshaft passage openings.
Remove carbon deposits in the heads and on the
valves. Flush and clean air filter. (Reference 4-7b).
b. Clean all parts except rubber and plastic components and preformed packings in ultrasonic cleaner Model No.
UG-2B-UTL-241 (Bendix Aviation Corp., Hamilton, Ohio) or equivalent. Use Bendix Ultrasonic concentrate detergent No.
25-1 or equivalent for the cleaning agent. Air blow dry and apply lubricating oil, FSN 9150-753-4667 to the parts after
cleaning. Place parts in clean container and keep in groups with their respective assemblies.
5-10. Inspection.
Inspect all parts visually for obvious signs of damage such as cracks, nicks, burrs, deformation or corrosion.
Inspect all threads internal and external. Replace any part having damaged threads. The following parts require specific
inspection as indicated:
5-21
