TM 5-3805-260-24
PISTONS
INSTALL PISTONS
Tools Needed
A
B
5P3524
Ring Compressor
1
5B1161
Wire
*
1.
Put clean engine oil on the piston rings, connecting rod
bearings,
cylinder
walls
and
crankshaft
bearing
journals.
2.
Turn the crankshaft until the bearing journal for the
pistons to be installed is at bottom center.
3.
Make sure the piston ring gaps are at least 120° apart
on the piston.
4.
Use tool (A) and install the piston in position in the
same cylinder bore from which it was removed. The
hole (crater) in the top of the piston must be toward
(nearest) the center of the engine.
NOTE: For more detail about the installation of connecting rod
bearings see REMOVE AND INSTALL CONNECTING
ROD BEARINGS.
5.
Check the bearing clearances with tool (B).
6.
Put clean engine oil on the threads of the bolts and
contact surfaces of the nuts for the connecting rod
caps.
CAUTION: When the connecting rod caps are installed, make
sure that the number on the side of the cap is next to and
respective with the number on the side of the
connecting rod.
7.
Put the cap (1) in position on the connecting rod and
install the nuts. Tighten the nuts to a torque of 30 + 3
Ib.ft. (40 + 4 N.m). Put a mark on each nut and the
end of each bolt. Tighten the nuts 60 + 5° more.
8.
Check the side clearance between two connecting
rods on the same crankshaft journal. Clearance must
be .003 to .033 in. (0.076 to 0.838 mm) for new rods.
9.
Do Steps I through 8 for the remainder of the pistons.
end by:
a) install cylinder heads
b)
install oil pan
3-111
