TM 55-203
(3) Abrasion through the outer covering which
(8) Porous hose, as determined by soapsuds
indicates damage to, or deterioration of, the first layer of
test.
duck (fig. 8-16).
(9) Spliced hose.
(4) Longitudinal or spiral cracks which
(10)
Missing hose.
show damage to, or deterioration of, the first layer of
(11)
Over 8 years old (determined by date
duck (fig 8-17).
on hose), date obliterated at time of cleaning, oiling,
(5) Soft spots which clearly indicate that the
testing, and stenciling, or periodic attention (indate
fabric has broken down (fig 8-18).
testing and stenciling) of airbrakes.
(6) Loose or defective fittings on either end or
p. Perform Code of Tests. After all work is
on both ends of the hose.
completed, blow out supply line to which testing device
(7) End of the tube 3/8 inch or more from the
is to be attached and perform code or tests in
shoulder of either the nipple or the coupling.
accordance with TM 55-2006.
q. Apply Stenciling
(1) Scrape off old stencil and paint over with
quick-drying paint.
(2) Apply stenciling showing month, day, and
year, railroad or private line, line reporting marks, and
initial of shop or station (fig 819).
(3) If location of lettering does not present a
clear view from outside of car, stenciling shall be placed
on side sill near release valve handle. Do not stencil
both reservoir and side; only one stencil is permitted.
On tank cars, where location of reservoir is such that
stenciling would be obliterated due to spillage, stenciling
may be located on reservoir side of center sill between
Figure 8-16. Hose with a hole in outer cover. Fabric
bolsters and close to B end bolster as possible. On
in good condition.
hopper cars where construction of car will permit,
stenciling may be located on sub side sill near release
rods.
The application of duplicate markings is
prohibited.
Note. Stencil markings must not be changed
until all work has been completed.
8-14.
Cleaning and Testing AB-1-B Brakes on
Repair Track
Cleaning, oiling, testing, and stenciling of AB1-B brakes
is the same as that for AB brakes (para 8-13), with the
following additional instructions:
Figure 8-17. Hose with a bad longitudinal crack in
a. Remove Filling Piece with Selector Valve
outer casing.
(1) Remove emergency portion (para 8-13d).
(2) Disconnect air piping from filling piece.
(3) Slide filling piece with selector valve off
mounting studs. Immediately apply shipping cover to
selector valve and tighten holding nuts. The shipping
cover must be applied to prevent entrance of dirt, water,
or damage to internal parts when transporting the valve
to the airbrake shop for reconditioning (para 8-16).
Figure 8-18. Hose with a "soft" bend.
8-20
Previous Page
