Repair Connecting Rod and Piston Group. (FIGURES 4-33 through 4-53)

TM 55-1905-223-24-4

4-10.

This task covers: a. Disassembly, b. Cleaning, c. Inspection, d. Assembly.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's rail

Emergency generator set secured and

and marine diesel engines

tagged "Out of Service"

TM 55-1905-223-10.

Combination wrench set, metric 10mm

Cylinder head removed (para. 2-40).

thru 24mm, 5120-01-046-4979

Connecting rod and piston group removed

Piston ring compressor,

5120-00-116-7676

Torque wrench kit P/N 3377216

Tool kit, measuring, machinists,

5820-00-278-9919

Piston ring expander P/N ST-763

Materials/Parts

Retaining rings (16) P/N 3901706

Piston pin (4) P/N 3901793

Engine connecting rod (4) P/N 3901569

Screw (8) P/N 3900910

Sleeve bearing (8) P/N 3901170

Engine piston assembly (4) P/N 3802100

Piston ring set P/N 3802050

Cleaning solvent, Item 20, Appendix C

Lubricating oil, Item 14, Appendix C

Detergent, Item 7, Appendix C

Warning tags, Item 21, Appendix C

DISASSEMBLY

Remove retaining rings (1, FIGURE 4-34).

Remove piston pin (2, FIGURE 4-33).

Using snap ring pliers remove the piston rings (7).

Repeat steps (a) thru (c) above for disassembly of the three remaining pistons.

4-29