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TM 10-4320-311-14
6-10. Replace/Inspect/Repair Piston and Connecting Rod Assembly.
This task covers:
a.
Removal
b.
Inspection
c.
Repair
d.
Installation
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics (Item 1,
Diesel fuel (Item 2, Appendix E,
Appendix B, Section III)
Section II)
Snap Ring Pliers (Item 3,
Plastigage, PG-1 (70220)
Appendix B, Section III)
Lubricating oil (Item 3, Appendix E,
Piston Ring Expander (Item 3,
Section II)
Appendix B, Section III)
Piston Ring Groove Cleaner (Item 3,
Equipment
Appendix B, Section III)
Condition
Piston Ring Compressor (Item 3,
Para
Appendix B, Section III)
6-8
Camshaft removed
Torque Wrench, 0-175 in-lb (Item 3,
6-9
Balancer shaft removed.
Appendix B, Section III)
REMOVAL: Refer to Figure 6-18.
a.
Remove carbon deposited on the upper inside surface of the cylinder before extracting the piston.
b.
Remove two connecting rod mounting bolts (1), nuts (2), and washers (3).
c.
Remove connecting rod cap (4) and bearing insert (5). Discard bearing insert
d.
Rotate crankshaft to the top of the piston stroke and pull out piston (6).
e.
Remove both snap lock rings (7).
WARNING
Heated parts can result in severe burns. Exercise care in handling the heated parts.
CAUTION
Avoid heating piston directly with a torch.
f.
Heat piston (6) and piston pin (8) to 160-180°F (71-82C).
g.
Remove piston pin (8) from piston (6).
h.
Connecting rod (9) can now be separated from piston.
6-20
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