TM 55-1680-320-23 & P
Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICE (PMCS)
3-8. Introduction. This section lists and authorizes preventative maintenance checks and services (PMCS) required
for the rescue hoist. The content of the PMCS tables is based upon the principles of reliability centered maintenance
3-9. Explanation of Columns.
a. ITEM NO. Column. The number used to identify sequence of checks and services. This column shall be used
as a source of item numbers for the TM Number Column on DA Form 2404, Equipment Inspection and Maintenance
Worksheet, when recording results of PMCS.
b. INTERVAL Column. Indicates the time interval upon which the checks and services must be performed. Intervals
are divided as follows:
c. ITEM TO BE INSPECTED Column. Indicates item and components to be inspected.
d. PROCEDURES Column. Indicates the procedure by which the check or service is to be performed. Tolerances,
adjustment limits, and instrument readings are included as applicable.
When replacement or repair of a component is
required, the procedures column will direct personnel to the appropriate task.
TABLE 3-1. INTERMEDIATE PREVENTIVE MAINTENANCE CHECKS AND SERVICES
ITEM TO BE
Boom Head (Service)
Boom Head Assembly
Drain and service boom head assembly by
removing drain plugs and servicing plugs
from sidecover. Reinstall drain plugs and
service in accordance with instructions on
lubrication plate. Install servicing
plug. Service boom head assembly in
accordance with Task 2-18.
Visually inspect for cracks, leaks,
dents, corrosion. Check for freedom of
movement by rotating boom head assembly
against the stops. Inspect identification
and lubrication plates for legibility and
security of attachment. Inspect harness
assembly for cuts, tears, fraying and
broken insulation. Inspection shall be in
accordance with Task 2-17.