ENGINE ASSEMBLY MAINTENANCE (Continued)
Remove and disassemble governor assembly.
(a) Remove governor arm and spring.
(b) Remove bushing nut, regulating nut, and speed control bracket.
Inspection and cleaning of parts.
(1) Cleaning. Clean all mud, grease, and dirt from outside surfaces of engine assembly before disassembly
using a cleaning compound such as Federal Specification P-C-435A. Dilute the compound as recommended on its
container. Thoroughly clean all internal parts with cleaning compound such as MIL-C-11090D. Clean all bearings with
dry cleaning solvent, P-D-680. When bearings are clean, spin them in light lubricating oil to remove solvent.
(2) Inspection. Check all machined surfaces for nicks, cuts or scratches. Look for uneven wear on camshaft
and crankshaft. Make sure bearings are not out of round or scarred. Make sure gear teeth are not chipped or cracked.
Replace any parts that are damaged.
d. Assemble engine.
Install and assemble governor.
(a) Place speed control disc on bushing nut.
(b) Thread bushing nut into cylinder block and clamp speed control bracket in place.
(c) Adjust the shaft end clearance by moving the needle bearing in or out. There should be a slight back
and forth movement in the shaft.
(d) Place spacer washer on stud shaft and insert governor gear into place.
Install breather assembly.
(a) Make sure all parts are clean and in good condition.
Use new gaskets, reed and filter for reconditioned engine.