TM 10-4320-310-14
6-3.
REPAIR/REPLACE CONNECTING ROD (Continued)
7
Disassemble connecting rod carefully insert bearing halves (8). The bottom half has a hole which fits into
connecting rod cup. Reassemble connecting rod with two hexagon socket head cap screws. Tighten screws
following procedures described in preceding step 5.
8
Measure inside diameter of bearing. Measure at
points 1 and 2 along axis A and B. Measurements
should be 1.6541 to 1.6525 inches (42.016 to 41.974
mm).
9
If any measurement is outside the tolerance limits,
replace the bearing. Make sure that measurements
for points 1 and 2 are not different nor outside the
tolerance limits, indicating that bearing is wearing in
a conical shape.
10
Make sure measurements along axis A and B are not
different nor outside tolerance limits, indicating
bearing is wearing in an oval shape.
11
If bearing is out of-round, replace R. Follow procedure described in paragraph 6-8. Also check cylinder and piston
for unusual wear. Follow procedures described in paragraphs 5-11 and 5-12.
REPAIR:
Dry cleaning solvent P-D-680 (safety or
Stoddard's Solvent) is potentially dangerous.
Avoid repeated and prolonged breathing of
vapors and skin contact with the liquid. Do
not use near open flame, arcing equipment,
or other Ignition sources. Always wear eye
protection and protective clothing. The flash
point of P-D680 Is 100°F to 138°F (38°C to
59°C).
Death or serious injury could occur If
compressed air Is directed against the skin.
Do not use compressed air for cleaning or
drying unless the pressure is/has been
reduced to 30 psi (2.06 bar) or less. When
working with compressed air always use chip
guards, eye protection, and other personal
equipment.
1
Clean rod bushing (1) and connecting rod (2) bore
with dry cleaning solvent and dry with compressed
air.
6-8
