TM 5-3825-226-24
CONNECTING ROD BEARINGS
REMOVE AND INSTALL CONNECTING
ROD BEARINGS
Tools Needed
A
5B1161
Wire
*
start by:
a)
remove oil pan
1. Turn the crankshaft until two pistons are at bottom
center. Remove connecting rod caps (1) from the two
connecting rods. Remove the lower half of the bearings
from the caps.
2. Push the connecting rods away from the crankshaft
and remove the upper half of the bearings.
CAUTION
Be
careful
not
to
damage
the
crankshaft journals. Do not turn the
crankshaft
while
any
of
the
connecting rod caps are removed.
3. Clean the surfaces where the bearings fit. Install the
upper half of the new bearings in the rods. Put clean
SAE 30 oil on the bearings and crankshaft journals. Put
the connecting rods in position on the crankshaft.
4. Clean the surfaces where the bearings fit. Install the
lower half of the new bearings in the caps. Put clean
SAE 30 oil on the bearings, bolt threads and contact
surfaces of the nuts.
CAUTION
When the connecting rod caps are
installed make sure that the numbers
on the side of the caps are next to
and respective with the number on
the side of the connecting rods.
5. Check the bearing clearance with wire (A). Put the
caps (I) in position on the connecting rods and install the
nuts. Tighten the nuts to a torque of 30 ± 3 lb.ft. (40 ± 4
Nm). Put a mark on each nut and the end of each bolt.
Tighten the nuts 60° ± 5° more.
6. Remove the cap. Measure the thickness of the wire.
The rod bearing clearance must be .0030 ± .0015 in.
(0.076 ±
0.038 mm). The maximum permissible
clearance is .007 in. (0.18 mm).
7. Put the caps in position on the connecting rods and
install the nuts. Tighten the nuts to a torque of 30 ± 3
Ib.ft. (40 ± 4 Nm). Put a mark oneach nut and the end
of each bolt. Tighten the nuts 60° ± 5° more.
8. Do Steps I through 7 again for the other bearings.
end by:
a) install oil pan
3-109
