Road Train Brake Tests
(1) Freight cars:
At the point where motive power
(a) AB type brake, including AB
or engine crew or train crew is changed, tests must be
type brake cylinders, 48 months as indicated by
made of the train brake system. After the brake system
stenciled date on car.
on a freight train has been charged to within not less
than 5 pounds below the standard brake pipe gage with
the brake valve in lap position, the engineman must
make a 15-pound service reduction upon proper request
or signal and note the amount of brake pipe leakage as
indicated by the brake pipe gage (which must not
When a freight car having brake
exceed 5 pounds per minute). After this test, the
equipment not due for periodic attention as indicated by
reduction must be increased to 25 pounds. Then, an
airbrake cleaning stencil is on shop or repair track, brake
examination of the train brakes must be made to
equipment must be tested by single car testing device
determine whether brakes apply in a service application
by currently effective AAR Code
on each car.
When this examination has been
of Tests, providing such car has not been so tested
completed, the proper release signal must be given and
within the previous 90 days as indicated by airbrake
each brake must be examined to see that it releases
cleaning or in-date testing stenciling on the car. Proper
method of stenciling is illustrated in figure 819.
(2) On a freight train, before a locomotive
(2) Passenger cars:
is detached or an angle cock is closed on a locomotive
(a) D-22 type brake, 24 months.
or car, the train brakes must be applied with a full
service brake application. After recoupling, opening the
UC-type brake, 15 months.
angle cocks, and releasing the train brakes, but before
proceeding, a 25 pound service reduction must be
All other types, 12 months.
made. Inspectors will note whether the rear brakes of
the train apply and then signal for a release, noting
Missing pipe clamps must be replaced,
whether rear brakes release.
and loose ones must be tightened. Hose and angle
cocks must be properly positioned. Piston travel must
(3) When a locomotive or locomotives are
be adjusted If required.
,added to a freight train, after coupling on and opening
the angle cocks, but before proceeding, a 25-pound
Handbrakes and connections must be
service reduction must be made Inspectors will note
inspected, lubricated, and tested and necessary repairs
whether brakes on the cars at the rear of the train apply
made to insure that they are in suitable condition for
and then signal for a release, noting whether the rear
safe and effective operation.
d. Complete AB type freight car brake equipment
and high-speed passenger car brake equipment must be
Freight trains arriving at terminals where facilities are
cleaned, repaired, lubricated as required, and tested as
available for immediate brake inspection and repairs
prescribed by manufacturer's instruction pamphlets
shall be left with airbrakes applied with a total service
available through the US Army Mobility Equipment
brake pipe reduction of at least 10 pounds. Trainmen
Command, St. Louis, Mo.
must close the angle cocks on the head and rear cars
before cutting off the locomotive or caboose. Inspection
Brake cylinders other than the AB type
of brakes and needed repairs must be made as soon
must be cleaned, repaired, lubricated as required, and
thereafter as practicable.
Where inspectors are
tested as prescribed below.
employed to make a general inspection of cars upon
arrival at a terminal, they must make a visual inspection
(1) Brakes must be made inoperative
of retaining valves, release valves and rods, retaining-
before work is done on brake cylinders.
valve pipes, brake rigging, handbrakes, hose, and the
accomplished by closing the cutout cocks in the brake
position of angle cocks, and make necessary repairs or
pipe branch pipes and draining all reservoirs. When
mark for repair tracks any cars to which repairs cannot
cutout cocks are provided in the brake cylinder pipes,
be made promptly.
only these cutout cocks must be closed. The reservoirs
need not be drained.
16-7. Periodic Repairs
Airbrake equipment on railway cars
(2) Piston rods must first be secured to
must be cleaned, repaired, lubricated, and tested as
nonpressure cylinder heads, after which nonpres-
often as required to maintain it in a safe and suitable
condition for service, but not less frequently than as