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TM 10-4320-256-14&P
d . Choke Control Lever. (4) When the choke control lever is rotated counter clockwise, the choke valve in the
engine carburetor is closed, which aids in starling a cold engine. As soon as the engine starts, manually open the
choke.
e. Throttle Control (5) The throttle control adjusts the engine speed. As the throttle control is rotated
counterclockwise the engine runs faster. As the control is rotated clockwise, the engine runs slower. The engine
speed controls the discharge fluid flow of the pump assembly. As the speed is increased, the flow increases; as
the speed is decreased, the flow decreases.
Section Il. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Paragraph
Page
2-2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2-3
Purpose of PMCS Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2-4
Explanation of Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2-5
Equipment is Not Ready/Available lf Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-6
Reporting Deficiencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2-7
Special Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2-2. General. Operator PMCS are penformed to ensure that the pump assembly is ready for operation at all
times. Perform the checks and services at the specified intervals.
a. Before you operate, perform you before (B) PMCS. Observe all CAUTIONS and WARNINGS.
b. While you operate, perform your during (D) PMCS. Observe all CAUTIONS and WARNINGS.
c. After you operate, be sure to perform your after(A) PMCS.
d. If your equipment fails to operate, refer to paragraph 3-3.
2-3. Purpose of PMCS Table. The purpose of the PMCS table is to provide a systematic method of
inspecting and servicing the equipment. In this way, small defects can be detected early before they become a
major problem causing the equipment to fail to complete its mission. The PMCS table is arranged with the
individual PMCS procedures listed in sequence under assigned intervals. The most logical time (before, during, or
after operation) to perform each procedure determines the interval to which it is assigned. Make a habit of doing
the checks in the same order each time and anything wrong will be seen quickly. See paragraphs 2-4 and 2-5 for
an explanation of the columns in table 2-1.
2-4. Explanation Of Columns. The following is a list of the PMCS table column headings with a
description of the information found in each column.
a. Item no. This Column Shows the sequence in which the checks and sevices are to be performed, and is
used to identify the equipment area on the Equipment inspection and Maintenance Worksheet, DA Form 2404.
b. Interval This column shows a dot l when each check is to be done.
c. Items to be inspected/procedures. This column identifies the general area or specific party where the check
or service is to be done, and explains how to do them.
2-3
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