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ENGINE DIVISION SERVICE MANUAL
TM 5-4210-230-14&P-1
ENGINE
If inspection shows the piston pin bushings are worn,
new bushings must be installed. This can be accomplished
by placing the connecting rod under a hydraulic press in line
with the properly sized hole in support plate, SE-1033, and
using SE-2539 tool, remove the bushing, Figure 94.
Fig. 94 Using SE-2539 Tool to Remove Worn Connecting
Rod Bushing
1.
Connecting Rod
3. Remover
2.
Press ram
4. Support plate
Fig. 95 Using SE-2539 Tool to Install New Connecting
Rod Bushing
1.
Large chamfer side
3. Installer
2.
Press ram
4. New bushing
To install the new bushing, place the bushing on SE-
2539 Installer and lubricate the bushing outside diameter with
light oil. Place the connecting rod on a flat surface plate with
the large chamfer side of the main bearing bore up. The split
in the bushing must be located in the connecting rod as
shown in Figure 97. Press new bushing in until bushing
contacts flat surface plate, Figure 95. If the bushing is flush
on the surface plate side, the opposite side of the bushing is
allowed to be flush to .010" above surface (large chamfered
side of connecting rod).
After bushing has been installed in the connecting
rod, it must be honed to proper size using SE-2218 Honing
Machine and equipment, Figure 96. See "Specifications."
Fig. 96 Honing Connecting Rod Bushing Using SE-2218
Equipment
1.
Honing machine
2.
Connecting rod
Insert the piston pin into the piston and connecting
rod and place retainers on each end. Make certain the
retainers seat fully with tension in the grooves. Test the
connecting rod and piston assembly on a connecting rod
aligner. If any misalignment is encountered, a new rod or
piston may be required to overcome this condition.
The piston is constructed so that it may be
assembled either way on the connecting rod. However, when
the piston and connecting rod are installed in the engine, the
large chamfered side of each rod must be located against the
crankshaft face. The chamfer provides clearance at the
crankshaft fillet, Figure 97.
CGES-210 Page 34
PRINTED IN UNITED STATES OF AMERICA
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