TM 11-6625-298-14
OPERATOR AND ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
Section l. TOOLS AND EQUIPMENT
the operator and organizational technician are
4-1. General
listed in appendix C.
Tools and test equipment authorized for use by
Section II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
deficiencies together with the corrective action
4-2. General
taken as prescribed in TM 38-750.
To be sure that the ZM-21(*)/U is always ready
for operation, it must be inspected systematically
so that defects may be discovered and corrected
Periods
before they result in serious damage or failure. The
Preventive maintenance checks and services of the
necessary preventive maintenance checks and
ZM-21(*)/U are required daily, weekly, monthly,
services to be performed are listed and described in
and quarterly. In addition, the weekly preventive
maintenance checks and services must be per-
sequence of minimum inspection requirements.
formed under the following conditions:
Defects discovered during operation of the unit will
a. Upon initial receipt.
be noted for future correction to be made as soon
b. Upon return from higher category main-
as operation has ceased. Stop operation im-
tenance.
mediately if a deficiency is noted during operation
which would damage the equipment. Record all
w- Weekly
DDaily
Time required: 0.4
Time required: 0.2
ITEM TO BE INSPECTED
Interval
Worktime
and
(T/ H)
sequence No.
PROCEDURE
W
D
0.1
1
1
Check to see that the ZM-21(*)/U is complete against the component listing
0.1
2
EXTERIOR SURFACES
Check to see that exterior is clean and free from dust, dirt, fungus, rust, and
corrosion.
0.1
3
HARDWARE
Check to be sure that all screws and handles are securely fastened.
4
TEST LEADS
Check for loose clips and terminals, cleanliness of terminals, and breaks in
the insulation.
0.1
5
OPERATION
2
While the ZM-21(*)/U is in operation, be alert for symptoms of trouble.
