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TM5-4210-229-14&P
6-12. PISTON AND CONNECTING ROD MAINTENANCE (Continued).
c. Piston and connecting rod installation.
(1) Coat the piston and piston ring compressor
with clean lubricating oil (Appendix D, Item
37).
(2) Install the piston end rod assembly into the
piston ring compressor.
CAUTION
The piston and rod assemblies can be
installed by turning the crankshaft only three
times. Position the number 1 and 6
crankpins at top dead center. Install the
number 1 and 6 piston assemblies. Repeat
this procedure for the numbers 2 and 5 and
numbers 3 and 4 piston and rod assemblies.
(3) Coat the cylinder sleeve generously with
clean lubricating oil (Appendix D, Item 37).
Install the compressor, with piston and rod,
into the cylinder sleeve. The numbers on
the rod must face away from the camshaft
while the markings on top of the piston
faces toward the camshaft side of the engine.
Push down on the piston carefully until it is
in the cylinder sleeve. Avoid striking the
sleeve with the connecting rod.
(4) Coat the connecting rod journal and con-
necting rod bearings with clean engine oil.
(a) Install the upper half of the bearing in
the connecting rod and pull the rod
down onto the journal.
(b) Install the connecting rod bearing cap
with the numbered side of the cap
matching the numbered side of the
rod.
(c) Install the bolts and torque to 60 ft-lb
(80 N.m), then torque to 130 ft-lb
(175 N.m).
NOTE
If bolts will not screw in by hand, reclean the
rod threads and try a new bolt. If a new bolt
does not screw in freely, the rod must be discar-
ded. Whenever new bolts are used in a rod,
they must be torqued to 130 ft-lb (175 N.m),
loosened, and retorqued three times.
(5) Install the remaining rods and pistons in the
same manner.
CAUTION
The connecting rod bearings must be fitted.
Bearing clearance checked and connecting rod
end play checked, as outlined previously, prior
to continuing with engine assembly.
d. Install cylinder head and valves (paragraph 6-6).
e. Install oil pan and gasket (paragraph 4-92).
6-35
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