AIR BRAKES - GENERAL INFORMATIONDouble Gladhand Assembly(with quick-connect cou-pling and shut-off cock). This assembly is used in theservice line connection to the trailer for the torque bal-ance test. Refer to Figure 24 for the parts and themanner of assembling this test equipment.Figure 24 - Double Gladhand Assembly -Exploded ViewDuplex Air GaugesTwo sets are required. Seal In-corporated Model 110122 or equivalent quality gauge isto be used. Each set includes one duplex gauge and two7.62m (25 ft.) long air hoses. The duplex air gauges arerequired for all tests. (At one time, the Seal gauge wasavailable under Tool Equipment No. SE-2325.Additional Air Hoses for Long Single-Trailer andMultiple-Trailer TestsTwo are required which are ofsufficient length and with quick-connection couplings.These hoses are used for making the test connectionsbetween the service brake chambers on the variousaxles of the tractor and trailer(s) and the air gauge(s).DecelerometerAMMCO Tools Incorporated Model 7350or equivalent quality decelerometer is to be used. Thedecelerometer is required for conducting the TorqueBalance Test. (At one time, the AMMCO decelerometerwas 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 moreaccurate brake application times for the Pressure BuildRate Test. These units are available from some elec-tronic laboratories and air valve manufacturers.TEST PROCEDURESBefore performing any of the test procedures whichfollow, record the preliminary data required on the BrakeTest Data Sheet (Form CTS-1033Y, Figure 25.) ThisFigure 25 - Brake Test Data SheetCTS-4154Y - Page 28
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