1.6 Piston and Piston Rings
DETROIT DIESEL 53
Fig. 5 - Removing or Installing Piston Pin Bushings
2.
Place the piston on the fixture so that the spacer protrudes into the bushing bore.
3.
Insert the 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 the 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 the reaming fixture J 5273 in a vise
Fig. 6 - Location of Joint in Piston Pin Bushings
(Fig. 7). Then insert the guide bushing J 4970-5 in the fixture and secure it with the set screw.
b. Place the piston in the fixture and insert the pilot end of the reamer J 4970-4 through the clamping bar, bushings
and into the guide bushing.
Fig. 7 - Reaming Piston Pin Bushings
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