AIR BRAKES - GENERAL INFORMATION
Double Gladhand Assembly (with quick-connect cou-
pling and shut-off cock). This assembly is used in the
service line connection to the trailer for the torque bal-
ance test. Refer to Figure 24 for the parts and the
manner of assembling this test equipment.
Figure 24 - Double Gladhand Assembly -
Exploded View
Duplex Air Gauges Two sets are required. Seal In-
corporated Model 110122 or equivalent quality gauge is
to be used. Each set includes one duplex gauge and two
7.62m (25 ft.) long air hoses. The duplex air gauges are
required for all tests. (At one time, the Seal gauge was
available under Tool Equipment No. SE-2325.
Additional Air Hoses for Long Single-Trailer and
Multiple-Trailer Tests Two are required which are of
sufficient length and with quick-connection couplings.
These hoses are used for making the test connections
between the service brake chambers on the various
axles of the tractor and trailer(s) and the air gauge(s).
Decelerometer AMMCO Tools Incorporated Model 7350
or equivalent quality decelerometer is to be used. The
decelerometer is required for conducting the Torque
Balance Test. (At one time, the AMMCO decelerometer
was available under Tool Equipment No. SE-2210.)
Brake Timing Unit (Use optional). This is a sophisti-
cated test instrument which can be used to record more
accurate brake application times for the Pressure Build
Rate Test. These units are available from some elec-
tronic laboratories and air valve manufacturers.
TEST PROCEDURES
Before performing any of the test procedures which
follow, record the preliminary data required on the Brake
Test Data Sheet (Form CTS-1033Y, Figure 25.) This
Figure 25 - Brake Test Data Sheet
CTS-4154Y - Page 28
