a. REMOVAL
TM 9-2320-289-34
3-13.
PISTON, CONNECTING ROD, AND CONNECTING ROD BEARING REMOVAL
AND REPAIR.
This task covers:
a. Removal
c. Cleaning and Inspection
b. Disassembly
d. Assembly
INITIAL SETUP:
Equipment Condition
Mater/a/s/Parts
l Engine removed. (See paragraph 3-3)
l Dry cleaning solvent
• Engine oil pump removed.
(Item 23, Appendix B)
(See paragraph 3-33)
l 3/8 in. I.D. hose (Item 39, Appendix B)
• Cylinder head removed (if removing piston
l Lubricating oil (Item 49, Appendix B)
and connecting rod). (See paragraph 3-7)
Tools/Test Equipment
General Safety Instructions
l Micrometer
l Dry cleaning solvent is flammable and
l Ridge reamer
must not be used near open flame.
l Snapring pliers
Use only in a well-ventilated area.
l Always wear goggles when removing
piston pin retainers.
1,
2.
3.
4.
l Ensure
NOTE
that cylinder bore and components of connecting rod and
piston assembLy (5) are marked for installation.
l If removing connecting rod
Turn crankshaft (1) until piston to be
removed is at bottom of its stroke.
Place a cloth over piston. Remove
any deposits from upper end of
cylinder bore. Use ridge reamer to
remove wear ridge if present.
Remove 2 nuts (3) and connecting
rod cap (4) from crankshaft (1)
journal. Remove lower connecting rod
bearing. DO NOT discard nuts at this
time.
Install short piece of 3/8 in. I.D. hose
(2) over threads of connecting rod
bolts. Remove piston and connecting
rod assembly (5) through top of
cylinder
bore.
Remove
upper
connecting rod bearing. Remove
hoses and retain for installation.
bearing, perform step 3.
TA50649
3-37
