TM 55-203
18-13. Welding and Cutting Operations
f.
Gasoline-operated motor vehicles of
different types are desirable for handling material, for
road trips, and for movement of personnel.
a.
All-steel freight cars require welding and
cutting equipment, some cars feature many welds in
their fabrication and assembly; consequently the heavy
18-12. Material Storage
car repair shop must be equipped for repairs to, or
rebuilding of, this type of equipment. The equipment
a.
A well designed heavy car repair shop must
used in the heavy car repair shop includes portable
include storehouse facilities adequate for storing,
electric welders for manual welding and oxyacetylene
handling, and distributing the large volume of material
cutting, inert gas-shielded metal-arc welding, submerge-
required for repair or rebuilding programs.
The
d-arc welding, and stud welding equipment.
storehouse building should be of adequate size to stock
material items, supplies, and parts which would be
b.
Oxyacetylene
cutting
torches
are
affected by exposure. The oil house, whether as part of
indispensable in the stripping operation for burning out
the main building or separate from it, should have tanks,
or cutting off rivets; removing sections of bent, broken,
pumps, and dispensing facilities for packing, oil, grease,
or corroded sheets, structural shapes, and parts; and
solvents, etc. , as required.
cutting scrap to a predetermined size for ease In loading
and shipping these torches are also used for welding
b.
If sufficient space is available in the carshop
operations or building up worn spots on cast Iron and
building or the fabricating shop, plates, structural-steel
malleable iron and for brazing and soldering. The hand-
shapes, bar iron, etc, can be stored indoors under
welding torch is most commonly used for this type of
overhead cranes.
Such an arrangement reduces
work.
handling costs and delays due to severe cold or rainy
weather. Otherwise, hardtop areas should be provided
c.
Portable electric welding sets of the motor
near material car tracks for storage of these items, as
generator type, alternating-current transformer type, or
well as truck sides, bolsters, fabricated car parts, and
rectifier types are used for all hand-welding operations
other heavy Items not affected by the weather Outside
Capacities will range from 150 amperes to 400 amperes
runways with an overhead crane provide an economical
for the heavier operations, but most freight car shops
means of unloading, storing, and handling material
have standardized on the rating of 400 amperes for all
where space is not available inside the shop building.
such work. The repair shop should be well equipped
Additional advantages can be secured if these runways
with welding sets so that it is not necessary to haul them
are extensions of the shop crane runways.
from one point to another or to delay repair work while
waiting for equipment.
Section III. PASSENGER-TYPE CARS
18-14. General
and the type of equipment. Capacity is determined by
the general repair policy, the average age of equipment,
Making heavy or general repairs (depot maintenance) to
and the seasonal demands for certain classes of cars.
passenger car equipment presents problems different
Shopping policy establishes the repair cycle and has a
from those of freight car repair work since the former
direct bearing on the capacity Military requirements will
normally cannot be performed on a production line
govern.
basis. The reason for this is that the number of
passenger cars is relatively small compared to the
b.
Each repair track should be served with gas,
number of freight cars and even this comparatively
air, water, and electricity to permit repair work on brake
small passenger car population is divided among a wide
equipment, plumbing, and electrical features while the
variety of types. Normally, in times of war, there will be
car is still on the repair track. Small, power-driven tools
very little passenger car repair work performed,
such as grinders, cutoff saws, and portable drills are
particularly in combat zones. Repairs to passenger train
required and provision should be made for them. A
equipment will be feasible in intermediate and rear
convenient location for such tools is between repair
areas only.
tracks. In this way, space that is of little use otherwise,
although it is necessary for clearance between adjacent
18-15. Shop Buildings and Service Facilities
cars, is at least partially utilized.
a.
The layout of a passenger car shop depends
c.
Pits are desirable for each repair track so
upon the output capacity of the facilities and personnel,
that repairs can be made to the equipment suspended
18-5
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