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 TM 9-2330-326-14&P
UNIT PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS)
4-1. GENERAL
To ensure that the M871A3 Semitrailer is ready for operation at all times, it must be inspected on a
regular basis so that defects may be found before they result in serious damage, equipment failure, or
injury to personnel. This section contains systematic instructions on inspections, adjustments, and
corrections to be performed by Unit maintenance.
While performing PMCS, read and follow all safety instructions in the warning summary at the front of
this manual. Keep in mind all warnings and cautions throughout PMCS.
4-2. SERVICE INTERVALS
Perform PMCS, found in Table 4-1, at the following intervals:
M
Monthly--once every month--1,000 Miles
Y
S
Semiannual--once every 6 months--6,000 Miles
Y
A
Annual--once each year--12,000 Miles
Y
T
Triennial--every 3 years--36,000 Miles
Y
MI
Mileage--at the indicated mileage
Y
4-3. REPORTING REPAIRS
All defects must be reported on a DA Form 2404, Equipment Inspection and Maintenance Worksheet,
or an electronic DA Form 5988E, if available, immediately after completing PMCS. If a serious problem
is found, immediately report it to your supervisor. Remember, record any corrective action taken.
4-4. GENERAL PMCS PROCEDURES
WARNING
Solvents can burn easily, can give off harmful vapors, and are harmful to
skin and clothing. To avoid injury or death, keep away from open fire and
use in a well-ventilated area. If solvent gets on skin or clothing, wash
immediately with soap and water.
CAUTION
Do not use high-pressure water or steam to clean semitrailer. Use
only low -pressure water and bristled brushes. Be especially
careful when cleaning electrical system components to include
lighting. Damage or impaired operation will result if this caution
is not observed.
Dielectric grease must be used on all electrical plug-ins, pins and
contact points to prevent corrosion.
Keep equipment clean. Dirt, oil, and debris may cover up a serious problem. Clean as you work and as
needed. Use approved solvents on all metal surfaces. Use soap and water on rubber, plastic, and
painted surfaces.
4-1
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