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 TM 55-1905-220-14-1
SECTION II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2-18. GENERAL.. Preventive Maintenance Checks and Services (PMCS) means systematic caring, inspecting, and
servicing of equipment to keep it in good condition and to prevent breakdowns. As the LCU's operator, your mission is
to:
a. Be sure to perform your PMCS each time you operate the LCU. Always do your PMCS in the same order, so it
gets to be a habit. Once you've had some practice, you'll quickly spot anything wrong.
b. Do your BEFORE PMCS just before you operate the LCU. Pay attention to WARNINGs, CAUTIONs, and
NOTEs.
c. Do your DURING PMCS while you operate the LCU. During operation means to monitor the LCU and its related
components while it is actually being operated. Pay attention to WARNINGs, CAUTIONs, and NOTEs.
d. Do your AFTER PMCS right after operating the LCU. Pay attention to WARNINGs, CAUTIONs, and NOTEs.
e. Do your WEEKLY PMCS once a week.
f.
Do your MONTHLY PMCS once a month.
g. Use DA Form 2404 (Equipment Inspection and Maintenance Worksheet) to record any faults that you discover
before, during, or after operation, unless you can fix them. You DO NOT need to record faults that you fix.
h. Be prepared to assist unit maintenance when they lubricate the LCU. Perform any other services when required
by unit maintenance.
2-19.
PMCS PROCEDURES.
a. Your Preventive Maintenance Checks and Services, Table 2-1, lists inspections and care required to keep your
LCU in good operating condition. It is set up so you can make your BEFORE OPERATION checks as you walk around
the LCU.
b. The "INTERVAL" column of Table 2-1 tells you when to do a certain check or service.
c. The "PROCEDURE" column of Table 2-1 tells you how to do ,required checks and services. Carefully follow
these instructions. If you do not have tools, or if the procedure tells you to, notify your supervisor.
d. The "NOT MISSION CAPABLE IF:" column in Table 2-1 tells you v hen your LCU is non mission capable and
why the LCU cannot be used.
e. If the LCU does not perform as required, refer to Chapter 3, Section II, Troubleshooting.
f. If anything looks wrong and you can't fix it, write it on your DA Form 2404. IMMEDIATELY, report it to your
supervisor.
g. When you do your PMCS, you will always need a rag or two. Following are checks that are common to the entire
LCU:
(1) Keep It Clean. Dirt, grease, oil, and debris only get in the way and may cover up a serious problem. Clean
as you work and as needed. Use dry cleaning solvent (SD-2) on all metal surfaces. Use soap and water when you clean
rubber or plastic material. Upholstery can be cleaned with soap and water and a clean, damp cloth.
(2) Rust and Corrosion. Check LCU structure for rust and corrosion. If any bare metal or corrosion exists,
clean, and apply a thin coat of oil. Report it to your supervisor.
Change 5
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