Section V. OVERHAUL OF PISTONS, RINGS, AND PISTON PINS

Section V. OVERHAUL OF PISTONS, RINGS, AND PISTON PINS

6-22. General

Overhaul standards of individual components

follow the inspection components. Refer to the

This section covers the overhaul of the pistons,

following table (table 6-12) for applicable

rings, and piston pins. Specific instructions on

and instructions for overhaul

illustrations

disassembly, cleaning, inspection, repair, and

operations.

assembly accompany the overhaul operations.

Table 6-12. Pistons, Rings, and Piston Pins

Repair

Assembly

Inspection

Disassembly

Cleaning

Component

Piston

through 6-44

and 6-45

Piston Rings

Piston Pins

Disassembly

6-23.

Pistons. Disassemble pistons following

instructions which accompany figures 6-44 and

6-45.

Remove

1. Remove oil control piston ring expander spring (A) by

separating at parting line as shown. Discard spring.

N o t e . Before removing compression rings and

Install

o i l control ring, check to see if they are free in

1. Install new oil control ring expander spring (A) in oil

piston grooves. Mark ring grooves of sticking

control groove of piston and join ends of spring together

rings for further detailed inspection.

as shown.

Figure 6-45. Removing or installing oil

1. Place jaws of remover and replacer - 5120-795-0177

in the end gap of upper piston ring (A). Spread ring, lift

control piston ring expander spring.

out of groove, and remove from piston. Discard piston

ring.

2. Remove and discard two intermediate compression

rings (B) and oil control ring in the same manner.

Figure 6-44. Removing or installing piston

compression rings using remover

and replacer-5120-795-0177.

6-47