Decompression Knob (5). The decompression
knob is used to relieve the engine compression
during the start-up cranking of the engine. Turn-
ing the knob fully clockwise will set the decom-
pression device for starting. The decompression
knob is automatically reset to operating mode dur-
ing the cranking operation.
Section II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
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 compactor's op-
erator, your mission is to:
a. Be sure to perform your PMCS each time you op-
erate the compactor. 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 any-
b. Do your DURING PMCS just before you operate
the compactor. Pay attention to WARNINGs,
CAUTIONs, and NOTEs.
c. Do your DURING PMCS while you operate the
compactor. During operation means to monitor
the compactor 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
compactor. Pay attention to WARNINGs, CAU-
TIONs, and NOTEs.
The term mission capable indicates
equipment is on hand and IS able to per-
form its mission (See DA PAM 738-750)
you discover before, during, or after operation, un-
less you can fix them. You DO NOT need to re-
cord faults that you fix.
Be prepared to assist unit maintenance when
they lubricate the compactor. Perform any other
services when required by unit maintenance.
Your Preventive Maintenance Checks and Set-v-
ices. Table 2-1, lists inspections and care re-
quired to keep your compactor in good operating
condition. It IS set up so you can make your BE-
FORE OPERATION checks as you walk around
2-3. OPERATORS PMCS TABLE
The INTERVAL column of Table 2-1 tells you
when to do a certain check or service.
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 so directs, notify
The "NOT FULLY MISSION CAPABLE IF col-
umn in Table 2-1 tells you when your plate com-
pactor cannot be used.
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
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