TM
11-5835-243-34/EE641-AA-MMl-010/E154
MTT/TO 31S3-4-110-1
noticeable gaps between wraps of tape on the tape
adequate ventilation whenever you use
reel. This condition can be corrected by respooling
TRICHLOROTRIFLUOROETHANE.
the tape. To respond, run tape from beginning of
Do not use solvent near heat or open
tape (BOT) to end of tape (EOT) and back to BOT.
TRICHLOROTRIFLUORO-
flame.
b. Inspect tape for creases or wear, and replace
ETHANE will not burn, but heat changes
tape if found.
the gas into poisonous, irritating fumes.
DO NOT breathe the fumes or vapors.
3-39. Magnetic Tape Replacement
TRICHLOROTRIFLUOROETHANE
NOTE
dissolves natural skin oils. DO NOT get
Inspect bottom of reel shaft for presence
the solvent on your skin. Use gloves,
of a small shim placed on top of a larger
sleeves and an apron which the solvent
shim. One or both may have been in-
cannot penetrate. If the solvent is taken
tentionally removed with old reel hub.
internally, see a doctor immediately.
Ensure that two flanged bearings are
e. Clean all removed metal parts, except mirror,
installed in center (one each side) of hub.
using a clean, lint-free cloth and cleaning solvent
(NSN 6850-00-105-3084). Use a stiff-bristle brush
in center (one each side) or reel hub.
to dislodge any stubborn accumulations of magnetic
b. Place reel hub on reel shaft, then place shim on
tape residue or grime. Dry all metal parts using
top of reel shaft and secure in position with
moisture-free compressed air at 20 psig maximum.
retaining ring.
f. Clean mirror by wiping with clean, lint-free
cloth moistened with a solution of mild liquid
NOTE
detergent and warm water. Remove detergent
Ensure that ridged side of elastic belt
residue by wiping mirror with a clean, lint-free cloth
rests in grooves on belt idlers and floating
moistened with clear warm water. Dry mirror using
pressure roller.
clean, dry, lint-free cloth.
3-38. Tape Inspection
d. Place elastic belt around take-up reel hub (B,
a. When a tape cartridge is disassembled, inspect
tapes for "stepping". "Stepping" is a nonunifor-
mity of circular tape wrap or the condition of
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