Figure 4-29. Typical truck, disassembled.
b. Bolster Repairs
cast-steel bolsters by welding if AAR (CONUS) and TRS
(overseas) regulations permit. A bolster worn beyond
(1) Bolsters wear at the center plate, at the side
reclaimable limits must be removed, scrapped, and a
bearings, and at the ends where contact is made with
new one installed. There are no restrictions on welding
the columns of the side frames as discussed in a,
of pressed or structural steel bolsters.
above. It is generally feasible to build up worn spots on