PISTONS, CONNECTING RODS, PISTON PINS AND RINGS

TM5-241O-237-34

3-18. PISTONS, CONNECTING RODS, PISTON PINS AND RINGS - REPLACE/REPAIR

This task covers:

a. Removal

b. Disassembly

c. Assembly

d. Installation

e. Place In Service

INITIAL SETUP

Applicable Configurations

Materials/Parts

Engine Oil OE/HDO-30 (Refer

All

to LO5-241O-237-12)

Teflon Tape

Common Tools

Shop Equipment, General Purpose

Equipment Condition

Repair, Semi-Trailer Mounted

Oil pan plate removed. See

NSN 4940-00-287-4894

page 3-119.

Shop Equipment, Machine Shop:

Engine oil pump removed. See

Field Maintenance, Basic

NSN 3470-00-754-0708

page 3-111.

Ring Groove Tool

Cylinder head assembly and spacer

plate removed. See page 3-30.

Piston Ring Groove Gage

Heat gloves

a. Removal

(1) Use a wire brush to clean all

carbon from around the inner

surface of the cylinder liners.

(2) Turn the crankshaft until two

pistons are bottom center.

NOTE

Keep each connecting rod cap (2)

together with its respective

connecting rod and piston (5).

Connecting rod and cap are

machined as a set and must be

kept that way.

(3) Use a wrench to remove two nuts

(l), connecting rod cap (2), and

bearing half (3) from connecting

rod.

3-77