TM 5-5420-226-20-1
SECTION III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS),
LUBRICATION INSTRUCTIONS, AND MANDATORY REPLACEMENT PARTS
INTRODUCTION
a. General.
Preventive maintenance is the systematic care, inspection, and service of the M48A5 AVLB to
keep it in serviceable condition and to detect faults and failures before extensive and time
consuming repairs or replacement are required. Maintenance checks are services performed by
organizational maintenance and are described below.
This section contains the procedures and instructions to perform M48A5 AVLB hull
organizational preventive maintenance checks and services. These services are performed by
organizational maintenance personnel assisted by the vehicle crew. Ensure that all crew level
hull PMCS procedures have been completed prior to performing organizational semiannual
PMCS. Refer to DA PAM 738-750 for instructions on the use of forms pertaining to PMCS.
Organizational services are defined by, and restricted to, the procedures outlined in this section
and Appendix B, Maintenance Allocation Chart, unless approval to perform higher category
services has been given by the support maintenance unit. For additional inspection and
classification information on track components, see TM 9-2530-200-24.
Knowledge of operating and maintenance procedures outlined in TM 5-5420-226-10 are essential
to the performance of organizational PMCS. Organizational mechanics must be familiar with
these procedures so that they can apply them in the performance of their duties.
The driver of the vehicle is often unaware of gradually developing defects. Therefore, the
vehicle must be road tested by organizational maintenance personnel during semiannual
maintenance checks and services. Any repairs or adjustment necessary to ensure safe
operation should be made prior to road test. All faults and corrective actions will be noted on
DA Form 2404, column “a”. The item number recorded in this column must correspond to the
PMCS item. After deficiencies have been corrected and the tactical situation permits, an
additional road test must be made for a distance of not less than three nor more than five
miles.
The preventive maintenance checks and services listed in this section are to be performed at
intervals determined by calendar days or vehicle operating hours, whichever comes first:
(a) bimonthly or after 25 operating hours, (b) semiannually or after 150 operating hours,
(c) annually or after 300 operating hours (d) biennial (every 2 years).
Hard (fixed) time intervals and the related man-hour times are based on normal operation.
The man-hour time specified is the time you need to do all the services prescribed for a
particular interval. Change the interval if your lubricants are contaminated or if you are
operating the equipment under adverse conditions, including longer-than-usual operating hours.
The interval may be extended during periods of low activity. If extended, adequate preservation
precautions must be taken.
PMCS items and intervals have been determined by using Reliability Centered Maintenance
(RCM) logic.
If anything looks wrong and cannot be fixed, report it on DA Form 2404. If something looks
dangerous or may cause equipment damage, report it immediately to your maintenance
supervisor.
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