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TM 9-2320-360-20-1
Section V. MAINTENANCE PROCEDURES
2-14. MAINTENANCE INTRODUCTION
This section provides general procedures for equipment maintenance at the organizational level. If a special procedure is
needed for maintenance of a component, the detailed procedure will be located in the chapter covering maintenance of
that component.
2-15. GENERAL REMOVAL INSTRUCTIONS
a.
Work Required. Remove only those parts needing repair or replacement. Do not disassemble a component any
further than needed.
b.
Preparation.
WARNING
Vehicle may move unexpectedly when working on it. Unless otherwise noted,
parking brake must be applied and wheels chocked before performing
maintenance. Failure to comply may result in injury or death to personnel.
(1)
Before removing any part of the electrical, winch hydraulic, or air systems, ensure system is not energized
or pressurized. Disconnect battery cables. Relieve all pressure from air system. Ensure parking brake is
applied and that all controls are in OFF position before starting a removal procedure.
(2)
Chock wheels: Wheel chocks should be positioned directly in front of and behind one of the rear wheels to
keep vehicle from rolling.
c.
Lifting. Always use a lifting device when lifting heavy parts. Ensure that load limit of lifting device exceeds
weight being lifted. Position lifting device and sling before disconnecting part for removal.
d.
Identification. Tag and mark all similar parts, such as electrical leads and hoses, before disconnecting and
removing them. This will make proper assembly easier. Identify mating ends of electric, hydraulic, and air lines before
they are disconnected.
e.
Hoses. Hose numbers are identified in detailed procedures by a four-digit number. This corresponds with the
numbers used on the air and hydraulic schematic.
f.
Electrical Wires. Wire numbers are identified in detailed procedures by a four-digit number. This number
corresponds with the numbers used on the electrical schematic.
2-16. GENERAL DISASSEMBLY INSTRUCTIONS
a.
Cleanliness. Work area must be kept as clean as possible. This will prevent contamination of internal parts.
This is true for valves, cylinders, and other hydraulic or air system parts.
b.
Expendable Parts. Gaskets, packings, and seals removed during repair must be discarded and replaced with
new parts. These items are usually damaged during removal. in the same way, lockwires, lockwashers, cotter pins, and
like items must be replaced at time of assembly. Self-locking fasteners that loosen up must be replaced, not tightened.
c.
Removing Seals. When removing gaskets, packings, or seals, do not use any tool that will scratch the surfaces
next to these items.
d.
Parts Protection. To prevent moisture and dirt from entering open housings, lines, and other openings, apply
protective caps and plugs as soon as possible after disassembly. Wrap all removed parts in clean paper.
2-984
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