TM 5-3895-382-24
Shell thickness ..................................................1.835 to 1.844 mm
(.0723 to .0726 inch)
Width of connecting rod
bearing ...............................................................31.55 to 31.88 mm
(1.240 to 1.255 inch)
Bearing clearance ............................................0.030 to 0.081 mm
(.0012 to .0032 inch)
(5)
Inside diameter of rod for
bearing ...........................................................67.210 to 67.220 mm
(2.6460 to 2.6465 inch)
(6)
Connecting rod cap with nuts and bolts
Tighten the nuts for the connecting rod to the following
torque: ..................................................................125 Nm (92 lb-ft)
Connecting rod cap with bolts only
Tighten the bolts for the connecting rod to the following
torque: ............................................................... 155 Nm (114 lb-ft)
NOTE:
If piston cooling jets are installed, the piston and
the connecting rod assembly must be turned
when the piston and rod assembly are installed.
Turning the piston and connecting rod assembly
will prevent the connecting rod from hitting and
damaging the piston cooling jet. When the
connecting rod has passed the piston cooling jet,
turn the connecting rod until the arrow or "Front"
mark on the top of the piston is toward the front of
the engine.
Type 2 Engines and 7BJ Engines
NOTE:
For a complete description of Type 1 and Type 2
engines, refer to the Specifications Module,
"Engine Design" for more information.
Illustration 45
Connecting Rod and Bearings
The piston height is controlled by the length of the connecting
rod. Connecting rods are supplied in six grades of length. The
different grades of length are manufactured by machining the
hole in the piston pin bearing in an off-center position. The
different grades of length are created by the following method:
Machining the center of the hole in the piston pin.
Machining the center of the hole in the bearing.
If the connecting rod is replaced, ensure that the same
grade of length as the original connecting rod is used.
However, if the crankshaft or the cylinder block is replaced, the
required grade of length of the connecting rods may change.
A correct grade of length of a connecting rod can be ordered
for replacement. The connecting rod includes the piston pin
bearing. The piston pin bearing is machined in order to create
the correct grade of length. The piston pin is installed in the
connecting rod at the factory. Table 7 provides the
specifications for the grade of length.
NOTE:
The length of the connecting rod is determined by
the following method: The bearing for the
crankshaft journal must be removed and the
piston pin must be installed. The original grade of
length of the connecting rod is determined when
the original piston pin is installed.
5-32
