TM 5-3895-346-14
PISTON AND PISTON RINGS
ENGINE OVERHAUL
Figure 4. Comparison of Pistons Remove Bushings from Piston
Remove Bushing from Piston
1.
Place the piston in holding fixture J 1513-1 so that the bushing bores are in alignment with the hole
in the fixture base.
2.
Drive each bushing from the piston with bushing remover J 4972-4 and handle J 1513-2 (Fig. 5).
Install Bushings in Piston
1.
Place spacer J 7587-1 in the counterbore in fixture J 1513-1 (small end up).
2.
Place the piston on the fixture so that the spacer protrudes into the bushing bore.
3.
Insert installer J 4972-2 in a bushing, then position the bushing and installer over the lower bushing
bore.
NOTE
Locate the joint in the bushing toward the bottom of the piston (Fig. 6).
4.
Insert handle J 1513-2 in the bushing installer and drive the bushing in until it bottoms on the
spacer.
5.
Install the second bushing in the same manner.
6.
The bushings must withstand an end load of 1800 pounds without moving after installation.
7.
Ream the bushings to size as follows:
a. Clamp reaming fixture J 5273 in a vise (Fig. 7). Then insert guide bushing J 4970-5 in the
fixture and secure it with the setscrew.
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