ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
m. Remove oil pump refer to paragraph 3-18.1.
Remove carbon deposits from upper portion of cylinder wall with a scraper before removing piston and con-
Remove two bolts (1, FIGURE 3-77) and nuts (2) securing connecting rod bearing cap (3). Remove lower
half d bearing cap (3) and connecting rod bearings (4).
N O T E
If connecting rod hearings are to be reused, tag them as to their original
position to facilitate installation.
Move piston (5) to top of cylinder and tap it with a hammer handle or similar object, from connecting rod side,
to drive it out of cylinder.
Repeat steps n through p for remaining pistons and connecting rode.
Remove camshaft, refer to paragraph 3-30.1.
s. Remove flywheel and flywheel housing, refere to paragraph 3-31.1.
Remove screws (6), front plate (7), and gasket (8). Discard gasket.
Use care not to scratch crankshaft oil seal seating surfaces.
Remove rear oil seal and spacer.
Measure crankshaft end play at the center journal, refer to FIGURE 3-78. Do this before removing bearing
caps. Standard end play is 0.004 in. (0.10mm), with a Iimit of 0.012 in. (0.30mm). If measured value exceeds
limit, crankshaft thrust bearings (9) must be replaced.
N O T E
lf crankshaft bearing cap bolts and bearings are to be reused, tag them
as to their original locations to facilitate installation.