PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) INTRODUCTION
To ensure that the 621B Scraper is ready for operation at all times, it must be lubricated and inspected on a regular basis
so that defects may be found before they result in damage, equipment failure or injury.
The KEY in this work package lists the types, amounts, and temperature ranges of the lubricants required for specified
Lubrication Charts at the end of this work package show all lubrication points.
Table 1 in WP 0020 00 contains systematic instructions on lubrications, inspections, adjustments, and corrections to be
performed by Unit Maintenance to keep the 621B Scraper in good operating condition and ready for its primary mission.
Tables 2 through 7 after scraper PMCS list mandatory replacement parts, by interval, for the scraper.
For information on Corrosion Prevention and Control (CPC), refer to WP 0001 00.
EXPLANATION OF TABLE ENTRIES
Item Number (Item No.) Column. Numbers in this column are for reference. When completing DA Form 2404 or DA
Form 5988-E (Equipment Inspection and Maintenance Worksheet), include the item number for the check/service indi-
cating a fault. Item numbers also appear in the order you must perform checks and services for the interval listed.
Interval Column. This column tells you when you must perform the procedure in the procedure column. Intervals are
based on calender dates or hours.
a. Semiannual procedures must be done once every six months.
b. Annual procedures must be done once each year.
Man-Hours Column. This column indicates man-hours required to complete prescribed lubrication service.
Item to Check/Service Column. This column identifies the item to be checked or serviced.
The WARNINGs and CAUTIONs appearing in your PMCS table should always be observed. WARNINGs
and CAUTIONs appear before applicable procedures. These WARNINGs and CAUTIONs must be
observed to prevent serious injury to yourself and others or to prevent the equipment from being damaged.
Procedure Column. This column gives the procedure you must perform to check or service the item listed in the Item
to Check/Service column, to know if the equipment is ready or available for its intended mission or for operation. You
must perform the procedure at the time stated in the interval column.
Not Fully Mission Capable If: Column. Information in this column tells you what fault will keep your equipment from
being capable of performing its primary mission. If you perform check/service procedures that show faults listed in this
column, the equipment is not mission-capable. Follow standard operating procedures for maintaining the equipment or
reporting equipment failure.