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TM 9-2320-312-24-1
UNIT PREVENTIVE MAINTENANCE CHECKS
AND SERVICES (PMCS) INTRODUCTION
0008 00
GENERAL
1.
To ensure that the M878A2 Yard Tractor is ready for operation at all times, it must be lubricated and inspected on a reg-
ular basis so that defects may be found before they result in serious damage, equipment failure or injury to personnel.
2.
The KEY in this work package lists the types, amounts, and temperature ranges of the lubricants required for specified
intervals.
3.
Lubrication Charts at the end of this work package show all lubrication points.
4.
Table 1 in WP 0009 00 contains systematic instructions on lubrications, inspections, adjustments, and corrections to be
performed by Unit Maintenance to keep the tractor in good operating condition and ready for its primary mission.
a.
While performing specific PMCS procedures, ensure items are correctly assembled, secure, serviceable, not worn,
not leaking, and adequately lubricated as defined below:
(1)
An item is CORRECTLY ASSEMBLED when all parts are present and in proper position.
(2)
When wires, nuts, washers, hoses or attaching hardware cannot be moved by hand, wrench or prybar, they
are SECURE.
(3)
An item is UNSERVICEABLE if it is worn beyond established wear limits or is likely to fail before the
next scheduled inspection.
(4)
An item is WORN if there is play between joining parts or warning and caution plates are not readable.
b.
Where the inspection "tighten" appears in a procedure, tighten with a wrench to given torque value even when item
appears to be secure.
5.
Tables 2 through 4 at the end of WP 0009 00 list PMCS mandatory replacement parts, by interval.
6.
For information on Corrosion Prevention and Control (CPC), refer to WP 0001 00.
EXPLANATION OF TABLE ENTRIES
Item Number (Item No.) Column. Numbers in this column are for reference. When completing DA Form 2404 or DA
1.
Form 5988-E (Equipment Inspection and Maintenance Worksheet), include the item number for the check/service indi-
cating a fault. Item numbers also appear in the order you must perform checks and services for the interval listed.
Interval Column. This column tells you when you must perform the procedure in the procedure column. Intervals are
2.
based on calender dates, miles, and hours.
a.
Hourly procedures must be done at hour interval indicated.
b.
c.
Semiannual/6,000 mi (9.654 km) procedures must be done once every six months or 6,000 mi (whichever occurs
first).
d.  Annual/12,000 mi (19,308 km) procedures must be done once each year or 12,000 mi (whichever occurs first).
e.  3K/every 3,000 mi (4,827 km) (no calendar interval).
f.
6K/every 6,000 mi (9,654 km) (no calendar interval).
g.  12K/every 12,000 mi (19,308 km) (no calendar interval).
Item to be Checked or Serviced Column. This column identifies the item to be checked or serviced.
3.
NOTE
The WARNINGs and CAUTIONs appearing in your PMCS table should always be observed. WARNINGs
and CAUTIONs appear before applicable procedures. These WARNINGs and CAUTIONs must be
observed to prevent serious injury to yourself and others or to prevent your equipment from being damaged.
Change 1

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