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TM 5-4210-233-14&P-1
5-74. APU PISTONS, RINGS AND CONNECTING RODS
This task covers:
a.
Removal
c.
Installation
b.
Installation/Repair
d.
Follow-on Maintenance
TOOLS REQUIRED
EQUIPMENT CONDITION
Tool Kit, General Mechanics, Automotive
APU Removed (see para 4-207.)
(Appendix B, Section III, Item 1)
APU Flywheel Removed (see para 5-67.)
APU Gear Cover Removed (see para 5-68.)
Shop Equipment, Automotive
APU Governor Cup Removed (see para 5-69.)
Maintenance and Repair
APU Camshaft Removed (see para 5-70.)
(Appendix B, Section III, Item 4)
Cylinder Head Removed (see para 5-72.)
Oil Pan Removed (see para 5-71.)
MATERIALS/PARTS REQUIRED
Oil, Lubricating (Item 10, Appendix E)
Piston Rings (Figure 206, Appendix F)
a.
Removal.
(1)
Remove two bolts (1) to remove connecting rod
caps with bearing insert.
(2)
Push the piston and rod assembly through the
top of the cylinder bore. Replace the cap and bearing insert
in the assembly.
(3)
Remove retaining ring (3) and piston pin (4) to
remove the piston (5) from the connecting rod (2).
(4)
Using a ring expander, remove the rings (6)
from the piston (5).
5-391
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