Figure 4-23. Removing or Installing Piston Rings Using Tool J8128 .

TM 55-1930-208-24

b. Disassembly.

NOTE

Piston and connecting rod components should be matched-marked during disassembly to ensure they are

reassembled in the same position.

(1) Refer to figure 4-22 and remove two nuts (1) and bearing cap (2) from connecting rod (3).

(2) Remove upper and lower bearing shells (4).

(3) Secure connecting rod in a vise equipped with soft jaws and remove piston rings (5, figure 4-23) with tool J8128,

Figure 4-23 .

Removing or Installing Piston Rings Using Tool J8128 .

(4) Use a punch or chisel and punch a hole through the center of one of the piston pin retainers (6, figure 4-22) and

pry the retainer from the piston. Remove the opposite retainer in the same manner.

(5) Loosen two bolts (7). Remove piston and connecting rod from vise and place on a work bench.

(6) Remove two bolts (7), two bushings (8), and connecting rod (3).

(7) Remove piston pin (9).

4-31