TM-9-2350-311-10
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; OPERATOR’S MANUAL
NOVEMBER 1994
TM-9-2350-311-10 - Page 101 of 775
TM 9--2350--311--10
2--16
Change 6
Section II.
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2--2
GENERAL
Preventive maintenance is the step-by-step caring, inspecting, and servicing of equipment to maintain it in good
condition and to locate problems before extensive and time-consuming repairs or replacements are needed. Refer to
DA PAM 750--8 for instructions on use of forms for preventive maintenance services.
WARNING
Unusable CARC mixtures may be considered hazardous waste and may require disposal in
accordance with federal, state, DOD, and DA hazardous waste regulations. Consult the
installation environmental office for proper disposal guidance. Mixed CARC has a flashpoint of
approximately 38
°
F(3
°
C) due to the incorporation of solvents and is highly flammable.
a. Monthly touchup/spot painting. Painting at the operator level is limited to touchup/spot painting. CARC paint that
has been opened must be used within 8 hours or it will deteriorate beyond use. Mix only what is needed for
immediate use. Refer to TM 43--0139.
b. Before you operate. Always keep in mind the WARNINGS, CAUTIONS and NOTES. Perform your before PMCS
prior to the equipment leaving its containment area or performing its intended mission.
c.
While you operate. Always keep in mind the WARNINGS, CAUTIONS and NOTES. Perform your during PMCS
when the equipment is being used in its intended mission.
d. After you operate. Always keep in mind the WARNINGS, CAUTIONS, and NOTES. Perform your after PMCS
when the equipment has been taken out of its mission mode or returned to its containment area.
e. Weekly. Always keep in mind the WARNINGS, CAUTIONS, and NOTES. Perform your weekly PMCS once a
week or if you are operating the item for the first time.
f.
Monthly. Always keep in mind the WARNINGS, CAUTIONS, and NOTES. Perform your monthly PMCS once a
month.
g. If your equipment fails to operate. Troubleshoot with proper equipment. Report any deficiencies using the proper
forms. See DA PAM 750--8.
2--3
PMCS PROCEDURES
a. The “Item No.” column provides the number to be used by the mechanic when recording all faults found and
actions taken on DA Form 2404, Equipment Inspection and Maintenance Worksheet. The item number on the DA
Form 2404 must correspond to the item number of the preventive maintenance check.
b. The “Interval” column provides the interval at which preventive maintenance checks and services are to be
performed by crew. This is scheduled on DD Form 314 in accordance with DA PAM 750--8.
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