TM 5-3805-258-24-2
ENGINE
DISASSEMBLY AND ASSEMBLY
PISTON COOLING ORIFICES
REMOVE AND INSTALL PISTON COOLING
ORIFICES
1307-10
Tools Needed
A
FT1542
Orifice Driver
1
start by:
a) remove crankshaft and gear
NOTE: The piston cooling orifices are installed in
the No. 2 and 4 main bearing bosses in the cylinder
block.
1.
2.
Use a soft punch to remove the orifices from the
cylinder block.
Use tool (A) to install the orifices in main bear-
ing bosses No. 2 and 4 until they are against the
counterbore. Be sure the orifices are open after
they are installed.
end by:
a) install crankshaft and gear
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