TM 55-203
(c) Between 24 and 29 months when car has a
(2) Examine journal bearings, wedges, journal stops
change of wheels or truck repairs requiring removal of
and box lid seals, renew if defective.
lubricators in one-half of the boxes on car.
(3) Renew dust guard plugs when missing or
(2) Not stenciled with numeral "30."
defective and apply sealer material on top of plug.
(a) After expiration of 24 months.
(4) Secure wooden dust guard plugs (when used)
with a device to lock the plug In place.
(b) After expiration of 13 months when car is on
the repair track.
(5) Renew defective rear seals only when truck is
dismantled for any reason.
(c) Between 18 and 23 months when car has a
change of wheels or truck repairs requiring removal of
(6) Apply new lubricators only, in accordance with
lubricators in one-half of the boxes on car.
manufacturer's instructions furnished in each lubricator
shipping container. Prior to installation saturate the
Note. Cars under authorized test for repack period
lubricator in railway car oil If any free oil is visible in
must be repacked at expiration of such period and all test
bottom of box after lubricator has settled, no further
stenciling removed. However, where conditions In (c)
above prevail, they will have priority over test period.
oiling is necessary. If there is no indication of free oil,
Expiration of time limits is defined as after the date of
add oil until approximately 3/8 inch of oil is visible in
month stenciled on car.
bottom of box.
b. Attention at Any Time.
(7) Scrape off old stencil and paint over with quick-
drying black paint.
(1) When stenciled for type of lubricators that are
not approved, conditionally approved, or approved for
(8) Apply stencil (similar to that shown in figure 8-
test per AAR Interchange Rules, regardless of type of
19 for airbrake testing) as follows:
lubricators in boxes.
(a)
Show place, month, day, and year of
(2) When equipped with waste packing.
repacking.
(3)
When stenciling is missing, incorrect, or
(b)
Show railroad, military, or private line
indistinct.
reporting marks.
(4) When not stenciled for any kind (name) of
(c) Show symbol for repack "RPKD."
lubricating device.
(d) Use same shop or station initial as used for
(5) When boxes have been submerged.
airbrake stencil (fig. 8-19).
(6) When car is on repair track and all lubricators
(e) Show name of lubricator applied.
are defective (para 4-17d).
(f)
Stencil numeral "30" adjacent to repack
c. Correct Repairs.
stenciling data when car is equipped with sealed and
stabilized journal box assemblies.
(1)
Remove journal bearings, wedges, and
lubricators or waste packing Thoroughly clean boxes,
(g) Stenciling must be on car body, near body
including inside of lid and front of box that could come in
bolster at diagonal corners, with not less than 1-inch
contact with lubricator when being applied Do not use
figures and letters.
waste for cleaning purposes.
Section V. TRUCK SIDE FRAME, BOLSTER, AND SPRINGS
frames will be subject to heavy impact forces. Uneven
4-19. Truck Side Frame
track and excessive swaying of a car body are the
a. General. The truck side frame is the trussed cast-
greatest contributing causes to increased wear on side
steel frame of the truck assembly on the outside of the
frames. Figure 4-29 shows the disassembled truck with
truck wheels, which extends from one axle to the other
component .parts.
b. Repairs. The truck side frame is subjected to
rig lugs for hanger-type brake beams, and the guide
severe stresses and strains under a car, particularly
slots for hanger-less-type brake beams are cast integral
when under load and traveling at high speed. Side
with the side frame proper. These journal boxes are
frames will wear in the center portion where the springs
designed to seat the top bearing wedge and bearing
and truck bolster are located. Cracks also may be found
assembly, provide a rear slot for the dust guard and
in this area or anywhere on the side frame. Journal
plug, and retain lubricating pads and lubricant for journal
boxes may contain broken or worn lugs. A defective
and bearings. When the roadbed is not in good
side frame
condition, especially around curves, the truck side
4-25
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