TM 5-3610-220-14
Table 4-1. Preventive Maintenance Checks and Services
Organizational Maintenance Category
Monthly Schedule
Sequence
Item to be
Paragraph
number
inspected
Procedure
reference
1.
Lubrication
Lubricate if necessary.
2.
Tools and equipment
See that all tools and equipment assigned to the camera
are clean, serviceable, and properly stowed in toolbox.
See that tool box is in good condition and that it closes
and fastens properly.
3.
Wiring, switches
Inspect wiring for oil-soaked, cracked, or frayed in-
sulation, broken wires and cables, and loose or
corroded connections. Check operation of switches.
2-1. f. (13)
Replace defective switches and wires. See that all
wiring is clean and that connections are clean and
tight.
4.
Magnetic contactor
Check the magnetic contactor for secure mounting and
tight wire connections. See that contact points make
contact and are flush. Check wires for shorting.
Tighten or replace all loose or missing screws. Replace
defective wires.
5.
Arc lamps
Replace defective or short carbons. Adjust gap between
carbon ends for correct spacing, if necessary. Clean
ash from bottom of arc lamp. Repair or report any
breaks or cracks in arc lamp exterior.
6.
Copyboard and lensboard
Inspect drive gears for proper setting and mesh. Check
transmission
for any unusual gear noise during operation. Check
gears for wear. If gears are worn or unusual noises are
present, report condition to the proper authority.
7.
Counter sprockets and chains
Check the counter sprockets for wear and damage.
Check the chains for wear, loose or missing links, and
proper tension. Repair or replace worn or damaged
chains.
8.
Universal joints
Check universal joints for wear and damage. Check for
loose or missing pins, holding joints to shafts. Replace
worn or damaged universal joints and loose or missing
thru
pins.
9.
Copyboard and lensboard
Check the drivescrews for damaged threads. Inspect the
drivescrews
drivescrews for end play at the end supports of the
camera. See that worn or damaged drivescrews are
thru
repaired or replaced. Adjust drivescrews if end play is
beyond limitations (para 6-32. b.).
10.
Turbo-compressors
Check the mounting of the turbo-compressors on the
vibration mounts and against the frame of the camera.
Check for suction. Tighten or replace loose or missing
mounting bolts and nuts; replace worn vibration
mounts. Report condition to proper authority if poor
suction exists.
11.
Turbo-compressor
Tighten or replace loose or missing mounting bolts and
nuts. If unusual noises exist due to friction of parts,
report condition to the proper authority. Replace
brushes that are worn beyond limits or brushes with
weak springs. Tighten wire connections securely. Be
sure that brushes are free in the holders for proper
contact with commutator.
12.
Lensboard assembly
Tighten all loose connections and replace missing bolts
and nuts. Replace worn wipers on the carriage with
new, oiled wipers; tighten the wiper guards. If
carriage gibs are worn, causing faulty reproduction,
report condition to the proper authority. Faulty or
damaged vertical and horizontal drive shafts,
preventing proper movement of inner lensboard
frame, must be reported to the proper authority.
Replace weak or damaged inner lensboard frame
spring. Report unsatisfactory operation of shutter.
4-2
