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 TM 55-1905-220-14-7
3-171.2. CONNECTING ROD - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
5. Align the upper end of the
connecting rod with the hole
in the reaming fixture.
6. Install the rear guide bushing
J1686-5 onto reamer J1686-20.
Then slide the reamer and
bushing into the fixture.
7. Turn the reamer in a clockwise
direction only when reaming or
withdrawing the reamer. For
best results, use only moderate
pressure on the reamer.
8. Remove the reamer and the con-
necting rod from the fixture.
Blow out the chips and measure
the inside diameter of the bush-
ings. The inside diameter of
the bushings must be 1.5015 to
1.5020 inch (3.8138 to 3.8151
cm). This will provide a piston
pin-to-bushing clearance of
.0015 to .0024 inch (0.0038
to 0.0061 cm) with a new piston
pin. A new piston pin has a
diameter of 1.4996 to 1.5000
inch (3.8090 to 3.8100 cm).
NOTE
Piston bushings are installed into piston. Refer to paragraph 3-
171.1.
ASSEMBLY
14. Connec-
a. Piston
Lubricate.
Use clean en-
ting
pin (10),
gine oil.
rod to
piston
Refer to para-
piston
bushings
(12)
3-2912
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