TM9-2320-211-20-1
CHAPTER 1
PREVENTIVE
MAINTENANCE
1-1. General. The best way, 10 maintain vehicles
(3) An item is UNSERVICEABLE if it is worn
beyond repair and is likely to fail before the next
covered by this manual is to Inspect them on a regular
scheduled inspection.
basis so minor faults can be discovered and corrected
before they result in serious damage. failure. or injury.
(4) An item is WORN if there is too much play
This section contains systematic instructions for
between joining parts or marking data. warning. and
inspection. adjustment. and correction of vehicle
components to avoid costly repairs or major
caution plates are not readable.
breakdowns. This is preventive maintenance checks
and services (PMCS).
(5) An item LEAKS if:
1-2. Intervals. organizational maintenance. assisted
(a) There is fluid seepage as indicated by wetness.
by operator crew will perform the checks and services
discoloration. or smell; or
contained in table 1-1 at the following intervals:
(b) There is air seepage as indicated by a hissing
a. Semiannually (S). Every 6 months or 6.000 miles
sound or the formation of bubbles exist after water
(9.654 km,). whichever comes first.
has been applied directly over the area in question.
b. Annually (A). Every 12 months or 12,000 miles
(6) If an item meets the requirements specified by
(19.308 km.). whichever comes first.
the lubrication order. LO-9-2320-211-12. then it is
ADEQUATELY LUBRICATED.
c. Biennially (B). Every 24 months or 24.000 miles
(38.616 km.). whichever comes first,
b. Where the instruction "tighten" appears in a
procedure. you must tighten with a wrench to the
1-3. Reporting Repairs. All vehicle shortcomings
given torque value even when the item appears to be
will be reported on DA 2404 (TM 38-750). Equipment
secure.
Inspection and Maintenance Worksheet. immediately
after the PMCS and before taking corrective action.
They will also be reported in the equipment log.
WARNING
1-4.
General Service and Inspection
Procedures,
Dry cleaning solvent used to clean parts
can be harmful to personnel and property.
a. While performing specific PMCS procedures
Do not use near open flame or excessive
make sure items are correctly assembled, secure. not
heat. Flash point of solvent is 100 F
unserviceable. not worn. not leaking. and adequately
(44.2 C).
lubricated as defined below:
c. Where the instruction "clean" appears in a
(1) An item is CORRECTLY ASSEMBLED
procedure. you must use dry. cleaning solvent (SD-2).
when it is in proper position and all parts are present.
specification P-D 680 to clean grease or oil from
metal parts. After the item is cleaned. rinsed. and
(2) When wires, nuts, washers, hoses. or
dried. apply a light grade of oil to unprotected
attaching hardware to an item cannot be moved by
surfaces to prevent rusting. On rubber and plastic
hand. wrench. or pry-bar. it is SECURE.
materials use soap and water.
NOTE
All references to TM9-2320-211-10
apply
to the 10 Series only.
1-1
