APU PISTONS, RINGS AND CONNECTING RODS -706881062

TM 5-4210-233-14&P-1

5-74. APU PISTONS, RINGS AND CONNECTING RODS

This task covers:

a. Removal

c. Installation

b. Installation/Repair

d. Follow-on Maintenance

TOOLS REQUIRED

EQUIPMENT CONDITION

Tool Kit, General Mechanics, Automotive

APU Removed (see para 4-207.)

(Appendix B, Section III, Item 1)

APU Flywheel Removed (see para 5-67.)

APU Gear Cover Removed (see para 5-68.)

Shop Equipment, Automotive

APU Governor Cup Removed (see para 5-69.)

Maintenance and Repair

APU Camshaft Removed (see para 5-70.)

(Appendix B, Section III, Item 4)

Cylinder Head Removed (see para 5-72.)

Oil Pan Removed (see para 5-71.)

MATERIALS/PARTS REQUIRED

Oil, Lubricating (Item 10, Appendix E)

Piston Rings (Figure 206, Appendix F)

a. Removal.

(1)

Remove two bolts (1) to remove connecting rod

caps with bearing insert.

(2)

Push the piston and rod assembly through the

top of the cylinder bore. Replace the cap and bearing insert

in the assembly.

(3)

Remove retaining ring (3) and piston pin (4) to

remove the piston (5) from the connecting rod (2).

(4)

Using a ring expander, remove the rings (6)

from the piston (5).

5-391