INSPECTION (cont) - TM-10-3930-638-24-P0826

TM 10-3930-638-24&P

4-2. ENGINE MAINTENANCE (cont)

f. Pistons and Connecting Rods (cont).

REMARKS

ACTION

ITEM

LOCATION

STEP

INSPECTION (cont)

NOTE

(cont)

Avoid mixing liners (12), connecting rods (3), and connecting rod

caps (2). Inspect one group at a time.

Check for damaged threads and distortion;

c. Connecting rod nuts

Remove

(1) and screws (11)

if distorted or threads damaged replace

part

d. Bearing liners (12)

Remove and

Slide liners out. Check for scoring, pitting,

flaking, cracking, or signs of overheating.

inspect

Replace if any of these conditions

observed

e. Connecting rod cap

Install

On corresponding connecting rod (3) to

avoid mixing caps (2)

(2), screws (11),

and nuts (1)

REASSEMBLY

Piston (4)

a. Connecting rod (3)

Position

In piston, Numbered side of rod facing

toward arrow side of piston

b. Piston pin (9)

Install

Use hand pressure

c. Two retaining

Install `

Use needle nose pliers

rings (8)

CAUTION

Use piston ring expander to install piston rings to prevent damag-

ing rings or piston.

d. Piston oil ring (7)

Install

In piston third groove

e. Second piston

Install

in piston second groove

ring (6)

f. Top piston ring (5)

Install

In piston first groove

g. Piston rings (5, 6,

Position

Rotate so that ring end gaps are 120 de-

and 7)

grees apart

h. Two connecting

Remove

rod nuts (1)

i. Connecting rod

Remove

cap (2)

4-48