TM 55-1905-223-24-8
3-19. Repair Connecting Rod and Low Pressure Piston Assembly. (FIGURE 3-8)
This task covers: a. Disassembly, b. Repair, c. Assembly.
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's,
Valve removed (para. 2-16).
Connecting rod and low pressure piston
Piston ring expander P/N ST-763
assembly removed (para. 2-19).
Materials/Parts
Cleaning solvent, Item 4, Appendix C
Connecting rod assembly P/N 1110749
Sleeve bearing half P/N 6656
Retaining ring P/N 8648
Piston pin P/N 110146
Piston ring P/N 6989
Ring expander P/N 6988, 6987, 9666, 2033
Low pressure compressor piston P/N 8642
Wiping rags, Item 3, Appendix C
Lubricating oil, Item 5, Appendix C
DISASSEMBLY
a. Remove bolt (4), locknut (16), and washer (15).
NOTE
The upper and lower bearing sleeves (1) are not the same.
b. Remove connecting rod (2), rod cap (17), and bearing sleeves (1).
c.
Remove retaining ring (5) and (12) and push piston pin (13) out of piston (14) and remove piston.
d. Pull bushing (3) out of connecting rod (2).
e. Using a ring expander, remove piston rings (6 through 11). Note the position of the beveled edges. New rings
must be assembled with beveled edges in same position.
Change 1
3-23
