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Table 2-9. Troubleshooting of Laser Receiver-Transmitter RT-1021/VVG-1 (A76) cont'd - TM-9-1240-369-340055
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TM-9-1240-369-34 Range Finder Fire Control: (Laser) AN/VVG-1 (1240-00-470-2156) Manual
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Cleaning  Procedures  for  Cold  Weather Operations
TM 9-1240-369-34
Section III. GENERAL MAINTENANCE
2-12.  Maintenance Services.
Keep
all
inflammable
cleaning
a. General.
Maintenance  services  include
materials away from open flames.
cleaning.
inspection, and paint touch-up.
This
Failure to do so could result in injury
maintenance is performed to detect and correct
or death.
conditions which may cause the equipment to deteriorate
and degrade field performance or cause a field failure.
(1) Metal parts. Use dry, clean wiping rags to
Refer to table 2-10 for required materials.
remove dust, dirt, grease, moisture, or other foreign
b. General Cleaning Instruction. The laser range
matter from metal parts. If the foreign matter cannot be
finder should always be kept reasonably clean. System
removed using dry wiping rags, dampen a rag with
performance may be degraded, and relatively obvious
alcohol or solvent and gently wipe the area.
defects that would be noted in a visual inspection may be
(2) Rubber parts. Clean rubber parts using a
hidden by dust, grease, or other foreign matter. Cleaning
mild detergent and .warm water.  Then dry the parts
which may be performed by DS and GS maintenance
using a (clean, absorbent wiping rang.
personnel  is  the  same  as  that  performed  by
(3) Glass.
organizational maintenance personnel prior to touch-up
CAUTION
paintings. Cleaning of internal optics is performed at GS
The optical elements of the laser
only.
range finder are coated. Do not clean
WARNING
glass surfaces of the laser range
Toluol
solvent
is
toxic
and
finder with rags or other material that
flammable.
Use only in a well-
might scratch the coated surfaces
ventilated area. Avoid prolonged or
and
thereby
degrade
system
repeated breathing of the vapor.
performance.
Avoid prolonged or repeated contact
with the skin.
Table 2-10. Maintenance Materials Required
Item
No.
Item Name
Specification
FSC
WARNING
Ethyl alcohol is flammable. When using it for cleaning, keep it and all flammable cleaning materials away
from open flames.
Toluol solvent is toxic and flammable.  Use only in well ventilated area.  Avoid prolonged or repeated
breathing of the vapor. Avoid prolonged or repeated contact with the skin.
1
Braid, Wire (Copper, tin-coated, Tubular) 1/2 in. ID. No. 36
FED QQ-B-575
6145
AWG
2
Brush, Artists
...............................
8020
3
Cotton, Flannel, Cotton (wiping rag)
FED CCC-C-458
8305
4
Ethyl Alcohol, Liquid
FED O-C-265
6810
5
GIycerin-Water Mixture
6810
6
Grease, Pneumatic Systems
MIL-G-4343
9150
7
Insulation, Sleeving, Electrical Heat Shrinkable (white
MIL-1-23053 / 5
5970
.877/.093 dia)
8
Paint, White (Color 227875)
FED-STD-595
8010
9
Paper, Lens Tissue
FED-NNN-P-40
6640
10
Primer Coating, Epoxy Polyamide, Chemical and Solvent
MIL-P-23377
8010
11
Sealant
RTV 3145
.................
(Dow Corning)
12
Sealing Compound Adhesive, Curing (Polysulfide Base)
MIL-S-11031
8030
13
Sealing Compound Non-Curing Polysulfide Base
8030
14
Sealing, Locking and Retaining Compounds Single component
MIL-S-22473
8030
(Grade CV)
15
Tape, Antiseize Tetrafluoroethylene with Dispenser
MIL-T-27730
8030
16
Tape, Lacing and Tying
MIL-T-43435
4020
17
Toluol, Cleaning Solvent
T324
6810
(Fisher Scientific Co.)
2-38

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