PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) INTRODUCTION
To ensure that the 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 the Operator and Field Maintenance personnel.
While performing PMCS read and follow all safety instructions found in the Warning Summary at the
beginning of this manual. Keep in mind all WARNINGs and CAUTIONs.
Perform Before PMCS just before operating the semitrailer.
Perform During PMCS while operating the semitrailer.
Perform After PMCS after operating the semitrailer.
Perform Weekly PMCS once each week.
Perform Monthly PMCS once each month.
Perform Semiannual PMCS procedures once every six months.
Perform Annual PMCS procedures once each year.
All defects that the operator cannot fix must be reported on a DA Form 2404 or DA Form 5988E Equipment
Inspection and Maintenance Worksheet, immediately after completing PMCS. If a serious problem is found,
IMMEDIATELY report it to your Supervisor.
GENERAL PMCS PROCEDURES
Keep equipment clean. Dirt, oil, and debris may cover up a serious problem. Clean as you work and as
needed. Use cleaning compound, solvent (WP 0143, Table 1, Item 24) on all metal surfaces. Use general
purpose detergent (WP 0143, Table 1, Item 8) and water on rubber, plastic, and painted surfaces.
While performing specific PMCS procedures, inspect the following components:
Bolts, Nuts, and Screws. Make sure they are not loose, missing, bent, or broken. Tighten any
that are loose. Report loose or missing bolts, nuts, and screws to Field Maintenance.
Welds. Inspect for gaps where parts are welded together. Check for loose or chipped paint, rust,
and cracks. Report bad welds to Field Manitenance.
Wiring Harness, Wires, and Connectors. Inspect for cracked or broken wiring harness
insulation, bare wires, and loose or broken connectors. Repair or replace as necessary. Report
loose connections and faulty wiring to Field Maintenance.
Hydraulic Brake Lines and Fittings. Inspect for wear, damage, and leaks. Make sure fittings
are tight. Report any damage, leaks, or loose fittings to Field Maintenance. If a leak originates
from a loose fitting, tighten it. If a component is broken or worn, correct the problem if authorized
by the Maintenance Allocation Chart (MAC) (WP 0140). If not authorized, report it to