TM 55-1905-223-24-8
3-21. Repair Connecting Rod and High Pressure Piston Assembly. (FIGURE 3-10)
This task covers: a. Disassembly, b. Repair, c. Assembly.
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's,
Piston, connecting rod, and crankshaft
removed from crankcase (para. 2-21).
Piston ring expander P/N ST-763
Materials/Parts
Lubricating oil, Item 5, Appendix C
Cleaning solvent, Item 4, Appendix C
Connecting rod assembly P/N 110804
Sleeve bearing half P/N 6656
Retaining ring P/N 8648
Piston ring P/N 110190-008
Piston ring expander spring P/N 6448
Piston ring P/N 6446
Piston ring P/N 6447
Piston ring PIN 1648
Piston ring P/N 6451
Piston expander ring P/N 6450
High pressure compressor piston P/N 2008-001
Wiping rags, Item 3, Appendix C
DISASSEMBLY
a. Remove bolt (11) locknut (13) and washer (12).
b. Remove connecting rod (16), rod cap (14), and bearing sleeves (15).
c.
Remove retaining rings (10), push piston pin (9) out of piston (8), and remove piston.
d. Pull bushing (1) out of connecting rod (16).
e. Using a ring expander, remove piston rings (2 through 7). Note the direction that the beveled edges of piston
rings are facing. New rings must be installed with beveled edges facing the same direction. See FIGURE 3-10.
Change 1
3-28