Dynojet Spring Applied Air Release (SAAR) Brake Assembly - Manual (Page 23)

S P R I N G A P P L I E D A I R R E L E A S E ( S A A R ) B R A K E A S S E M B L Y I N S T A L L A T I O N
Installing the SAAR Brake Assembly
Version 1 Spring Applied Air Release (SAAR) Brake Assembly Installation
19
F ASTENING THE A IR C AN
1 Check to make sure that the area is clear and that the dyno can be operated safely.
2 Power up the dyno electronics.
Keep hands and fingers clear when operating dyno.
3 Use the pendant to turn the brake to the OFF position. This will apply air pressure
to the brake’s air can to extend the rod, allowing you to fit the rod through the
bottom of the hole in the brake actuating tube.
4 Gradually increase the air pressure to 100 psi by pulling up on the regulator knob
and turning it clockwise. As you are doing this, guide the air can rod through the
hole in the brake actuating tube.
5 Torque the upper two nuts fastening the air can to the mounting bracket to
110 ft-lbs.
6 Adjust the nut on the bottom of the air can rod until the brake shoes are
6mm/.25" away from the dyno drum.
7 Tighten the upper nut on the air can rod down onto the brake actuating tube to
sandwich the tube between the two nuts.
8 Torque the lower nut to 110 ft-lbs. Your brake should now be completely installed.
Figure 21: Apply Air Pressure to Extend Air Can Rod into Brake Actuating Tube
P OWERING UP AND T ESTING
1 Verify that the pressure gauge on the Spring Applied Air Brake shows 100 psi.
2 Use the pendant to turn the brake ON.
3 Ensure that the brake shoes are making contact with the dyno’s drum and that the
drum will not rotate. Adjust the brake if necessary using the nuts on the air can rod.
BR032
connect the two black
wires from the brake
solenoid to the
breakout board
connect to shop air
torque lower nut
to 110 ft-lbs
torque nuts to
110 ft-lbs
upper nut
air can rod