TM 5-4930-244-14
6-3. CYLINDER, PISTON AND CONNECTING ROD ASSEMBLY - REPAIR.
This Task Covers:
a.
Disassembly
b.
Cleaning
c.
Inspection K)
d.
Repair
e.
Assembly
Initial Setup:
Tools and Test Equipment Required
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Arbor Press (Appendix B, Section Ill, Item 13).
Bearing Clearance Gage (Appendix B, Section III, Item, 14).
Chemical and Oil Protective Gloves (Appendix B, Section III, Item 8).
Industrial Goggles (Appendix B, Section III, Item 9).
Micrometer (Appendix B, Section III, Item 10).
Piston Ring Compressor (Appendix B, Section III, Item 15).
Snap Ring Pliers (Appendix B, Section II, Item 16).
Torque Wrench, 0-175 ft - lb (Appendix B, Section III, Item 4).
Materials/Parts Required
Dry Cleaning Solvent (Appendix E, Section II, Item 3).
Lubricating Oil (Appendix E, Section II, Item 20).
Sealing Compound (Appendix E, Section II, Item 5).
Tin Alloy Solder (Appendix E, Section II, Item 21).
Wiping Rags (Appendix E, Section II, Item 1).
Equipment Condition
Oil Pan and Gasket removed (para. 5-10 J.).
Cylinder Head removed (para. 5-10).
a. Disassembly. (Refer to Figure 6-2, Sheet 1 of 4 and 2 of 4).
NOTE
Note the position of connecting rod (1) components. Mating surfaces of rod (1) are
numbered for identification.
(1)
Remove two screws (2), connecting rod end cap (3), and bearing (4) from crankshaft (5).
(2)
Turn crankshaft (5) to set piston (6) at top dead center (TDC).
(3)
Lift off cylinder barrel (7) with piston and rod. Remove shims (4) and set aside for later assembly and for bumping
clearance adjustment.
(4)
Remove piston (6) and rod (1) from cylinder barrel (7).
(5)
Remove two snap rings (5), wrist pin (11), and rod (1) from piston (6).
(6)
Remove upper rod bearing (7) from rod (1).
(7)
Remove rings (8) from piston (6).
6-6
