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TM 5-4320-305-24
4-13.
REPLACE/REPAIR CRANKCASE ASSEMBLY (Continued)
WARNING
Death or serious injury could occur if diesel fuel oil is not handled carefully. Use in a well-
ventilated area away from open flame, arcing equipment, ignition sources, heaters, or excessive
heat. Always store fuel in proper, marked containers. DO NOT SMOKE.
Death or serious injury could occur if compressed air is directed against the skin. Do not use
compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11
kgcm2) or less. When working with compressed air always use chip guards, eye protection, and
other personal protective equipment.
a.
Clean cylinder seats (1) thoroughly with
diesel fuel oil and dry with compressed
air. Mount crankcase cylinder seat refacing
tool No. 150020 (2) with supports onto
cylinder seat. Install bolts (3) but do not
tighten. Make sure tool is still movable.
b.
Center refacing tool (1) on inside lip of
cylinder bore (4) with centering fingers (5).
Tighten bolts (3) securely.
c.
Withdraw centering fingers and position seat
cutter holder (1) over inside lip of cylinder
seat (2) with positioning screw (3) and small
slot-head screwdriver (4).
4-114
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