TM 5-3895-382-24
Table 7
Grade of
Length
Color
Length of the
Connecting
Rod
”F”
Red
165.728 to
165.761 mm
(6.5247 to
6.5265 inch)
“G"
Orange
165.682 to
165.715 mm
(6.5229 to
6.5247 inch)
“H"
White
165.637 to
165.670 mm
(6.5211 to
6.5229 inch)
“J”
Green
165.591 to
165.624 mm
6.5193 to
6.5211 inch)
'K"
Purple
165.545 to
165.578 mm
(6.5175 to
6.5193 inch)
"L"-
Blue
165.499 to
165.532 mm
(6.5157 to
6.5175 inch)
If a piston pin bearing requires replacement but the connecting
rod does not require replacement, a new piston pin bearing
can be ordered. This bearing is partially finished. The hole in
the bearing must be machined off-center to the correct
distance in order to create a connecting rod assembly that is
the correct grade of length.
Refer to the Testing and Adjusting manual for the following
procedures:
Determine the length of the connecting rod.
Determine the distortion of a connecting rod.
Replace the piston pin bearing.
Turbocharged Engines
(1)
Inside diameter of rod for
bearing ...................................................43.01 to 43.04 mm
(1.693 to 1.694 inch)
(2)
Outside diameter of bearing for piston
pin ...........................................................43.11 to 43.15 mm
(1.697 to 1.699 inch)
Inside
diameter
of
bearing
for
piston
pin
after
reaming ..........................................................39.723 to 39.738 mm
(1.5639 to 1.5645 inch)
Clearance
between
small
end
bearing
and
piston
pin ........................................................................0.023 to 0.044 mm
(.0009 to .0017 inch)
(3)
Distance between center of piston pin and center of
crankshaft bearing ...........................219.05 to 219.10 mm
(8.624 to 8.626 inch)
(4)
Bearing for connecting rod journal
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 top of the piston is toward the front of the
engine.
Piston and Rings
SMCS Code: 1214; 1215
Type 1 Engines and 9RM Engines
NOTE:
For a complete description of Type 1 and Type 2
engines, refer to the Specifications Module,
“Engine Design” for more information.
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