TM5-3810-294-34
pins with engine oil. Using a ring compressor ,install the
words "left and "right" refer to the right or left side of the
piston assembly into its respective cylinder bore with the word
engine as viewed from the flywheel end of the engine.
"up" marked on the piston toward the center line of the
e. Place bearing caps and bearing lower halve over
cylinder block. Install rod bearings (4) and caps (3), coating
the crankshaft journals. Be sure that that bearing caps
each bearing shell with engine oil. The numbered side of the
are properly installed with the number toward the right
caps must match and be on the numbered side of the rod.
side of the crankcase.
Install rod bearing bolts (2) and torque to 65 foot-pounds.
f. Install cap bearing bolts (5) and washers
Note. If the rods and bearing caps are properly installed, the
(6)Tighten the bearing caps although not to full torque.
large chamfered side of the rod and the cap will be to the fillet
Using a soft hammer, tap rear bearing cap until the rear
side of the crank pin.
machine face of the cap is flush with the rear machine
j. Install key (14), thrust plate (15) and press gear (13)
face of the crankcase. Alignment of these two faces will
into place on camshaft (16). Coat the cam lobes with heavy
assure proper cap location Tighten main bearing cap bolts
duty axle lubricant. Insert camshaft (16) through the front
to a torque of 10 foot-pounds.
end of the block. Be sure that the timing marks on the
g. Press sleeve bearing (21) into rod bore. Heat
camshaft and crankshaft line up. Secure with capscrews (1).
piston (18) to approximately 200 degrees F in piston
k. Install fuel pump cam (12), distributor gear (11) and
heater or boiling water. With the palm of the hand, push
jam nut (10) on camshaft. 1. Using a dial indicator, check
piston pin (20) through piston and bearing sleeve. Install
the camshaft end play. If the end play exceeds limits shown
retaining rings (19).
in table4-1, replace the camshaft thrust flange.
h. Using piston ring expander tool, assemble rings
(17) on piston, bottom ring first.
i. Turn the crankshaft so the number 1 crankpin is
at bottom dead center. Coat the piston bore crankshaft
journals, pistons, piston rings and piston
Section VII. REPAIR OF CRANKCASE
13-39. Description
13-40. Disassembly
The crankcase contains the crankshaft, camshaft and
Refer to figure 13-7 and disassemble as follows.
sleeves.
This section assumes removal of a
mechanisms in this chapter up to this point.
13-10
