Make sure all oil passages are open. O p e n clogged passages with compressed
a i r or by working a stiff wire back and forth. Flush with solvent.
A f t e r cleaning, all parts should be covered or wrapped in plastic or paper to
p r o t e c t them from dust and dirt.
R e f e r to Inspection, Care, and Mainte-
C h e c k all bearing cones and cups.
n a n c e of Antifriction Bearings, TM 9-214.
S m a l l chips, burrs or scratches in castings that do not go into screw holes
or openings can be repaired.
C h e c k all mating flanges on housings and supports for warpage with a straight
e d g e or on a surface plate. C h e c k mating flanges for discoloring. Discoloring of
flanges will mean that oil has been leaking which may mean that flanges are warped.
C h e c k aluminum castings for cracks using penetrant kit. If dye penetrant
i n s p e c t i o n equipment is not available, use a magnifying glass and a strong light.
C h e c k all other type castings for cracks with magnetic particle inspection
e q u i p m e n t . I f magnetic particle inspection equipment is not available, use a magni-
f y i n g glass and a strong light.
There are no wear limits on gear teeth. Good
judgement is needed to know if parts are good.
C h e c k all gears for cracks, worn teeth, and pitted surfaces.
C h e c k all threaded parts for worn or stripped threads.
S m o o t h out any chips, burrs, or scratches on castings, gears, and shafts.
W e l d cracks and small holes in castings. Refer to TM 9-237.
D r i l l out any bolts or studs broken off in tapped holes.
D r i l l out threaded holes that are stripped or out-of-round to the next
l a r g e r size and retap them. W h e n putting engine together, use a bolt or stud the
s i z e of the newly tapped hole.
T e l l the machine shop to mill warped castings.
Section III. CLEANING, INSPECTION, AND REPAIR OF
ENGINE COMPONENTS AND ACCESSORIES
V a l v e seat replacing tool, pn 11642007
E x h a u s t valve seat replacer, pn 11642006
Hand reamer, pn 12254220
A i r compressor pulley adjusting wrench, pn 10935288
F u e l passages cleaning brush, pn ST 876
cleaning solvent, type II (SD-2), Fed. Spec P-D-680
compressor unloader valve gasket
compressor intake air cleaner gasket
compressor air discharge manifold gasket