TM 11-6130-247-14-1
CHAPTER 3
PREVENTIVE MAINTENANCE INSTRUCTIONS
manuals that contain detailed repair or replacement
3-1. Scope of Preventive Maintenance
procedures. If the defect cannot be remedied by per-
forming the corrective actions listed, higher category
Preventive maintenance is the systematic care, serv-
of maintenance or repair is required. Records and re-
icing, and inspection of equipment to prevent the oc-
ports of these checks and services must be made in ac-
currence of trouble, to reduce downtime, and to assure
cordance with the requirements set forth in TM
that the equipment is serviceable.
38-750.
a. Systematic Care. The procedures given in para-
(1) Before you operate. Always keep in mind the
graphs 3-2 and 3-3 cover routine systematic care and
CAUTIONS and WARNINGS. Perform your before (B)
cleaning essential to proper upkeep and operation of
PMCS.
the equipment.
(2) While you operate. Always keep in mind the
b. Preventive Maintenance Checks and Services.
CAUTIONS and WARNINGS. Perform your during
The preventive maintenance checks and services chart
(D) PMCS.
(para 3-2) outlines functions to be
performed at
specif-
NOTE
ic intervals. These checks and services are to maintain
If the equipment must be kept in continuous
Army electronic equipment in a combat serviceable
condition; that is, in good general (physical) condition
operation, check and service only those items
that can be checked and serviced without dis-
and in good operating condition. To assist operators in
turbing operation. Make the complete checks
maintaining combat serviceability, the chart indicates
and services when the equipment can be shut
what to check, how to check, and the normal indi-
down.
cations. The References column lists the paragraphs or
3-2. Preventive Maintenance Checks and Services Chart
MMonthly
B-Before operation
A-After operation
W-Weekly
D-During Operation
Q-Qarterly
Reference
ltem to be inspected
Procedure
See that equipment incomplete . . . . . . . . . . . . . . . . . .
Panel . . . . . . . . . . . . . . . .
Clean and check meter glass and indicator lenses for
Cracks.
Connectors . . . . . . . . . . . . Check tightness.
(Controls and indicator . . See that mechanical action is smooth and check meter
for sticking or bent pointer.
Operation . . . . . . . . . . . . . Operate equipment according to chapter 2.
Cables, cords, wires . . . . . Inspect for chafed, cracked, or frayed insulation. Re-
place connectors that are broken, arced, stripped, or
worn excessively.
Handle . . . . . . . . . . . . . . . Inspect for looseneas. Replace or tighten as necessary.
Metal surfaces . . . . . . . . . Inspect for rust and corrosion. Touch up paint as re-
quired.
Pluckout item . . . . . . . . . Inspect seating.
Jacks . . . . . . . . . . . . . . . . Inspect for snug fit and good contact.
Transformer . . . . . . . . . . Inspect for tight nuts and absence of dirt or corrosion.
Resistors and capacitor . Inspect for cracks, blistering, or other defects.
DA Pam 310-4.
Publications . . . . . . . . . . . See that all publications are complete, serviceable, and
current.
TM 38-750 and
Modification . . . . . . . . . . Determine if new applicable MWO's have been pub
DA Pam 310-7.
lished. All URGENT MWO's must be applied im-
mediately. All NORMAL MWO's must be scheduled.
Spare parts . . . . . . . . . . . Check for general condition and method of storage. No
overstock should be evident and all shortages must
be on valid requisitions.
Change 1 3-1