Bendix Commercial Vehicle Systems AIR PRESSURE BALANCE PRESSURE TESTS - Manual

AIR PRESSURE BALANCE &
THRESHOLD PRESSURE TESTS
GENERAL INSTRUCTIONS:
1. Number the axle and each brake on the axle of the vehicle being tested using the illustration.
2. All testing should be performed using both increasing (INC) and decreasing (DEC) air pres-
sure and using our instructions.
3. When performing the Air Brake Pressure Balance Tests the pressure from only one chamber
of a tandem can be used when the same relay valve delivers pressure directly to all four
chambers on the tandem.
4. Record test results in the charts provided.
Air
Pressure
Balance
and
Threshold
Pressure
Tests
®
Date:
________________________
Test
Conducted
By:
____________
Vehicle
No:
___________________
Axle No. 1 2 __ __ __ __ __ __ __ __ __ __ __
Brake No. 1 3 __ __ __ __ __ __ __ __ __ __ __
Axle
Brake No. 2 4 __ __ __ __ __ __ __ __ __ __ __
Tractor Dolly Dolly
Trailer Trailer Trailer
Vehicle Manufacturer
Number Model, Year Comments
Tractor
#1 Trailer
Conv. Dolly
#2 Trailer
Conv. Dolly
#3 Trailer
VEHICLE DATA