Repeatedly press the UP or DOWN arrow switches on the in-cab controller. From 1 to 6 Green LED indicators should glow to indicate that various gain settings are being selected.
Select maximum gain setting (6 Green LED), press and hold the square, red STOP switch. From 4 to 6 red LED indicators on the controller should glow, and the trailer brake lights should be illuminated.
Apply and release the tow vehicle brake pedal several times. Each time the pedal is pressed, from 1 to 3 red LED indicators should glow, and the trailer brake lights should illuminate.
Checks with Tow Vehicle Engine Running – USE EXTREME CAUTION!
Select the maximum Gain Setting (6 green LED) using the in-cab controller. Apply and HOLD the tow vehicle brake pedal, release the park brake, start the engine and place the transmission shift lever in Forward. With the engine at low idle speed, release the brake pedal enough to allow the tow vehicle to move slowly forward. Apply a small force to the brake pedal. The trailer brakes should be felt to apply, noticeably slowing the tow vehicle. Repeat this procedure 2-3 more times.
Lower the gain setting to number 5 and perform Check Procedure 7 several more times, trying various levels of applied pedal force.
Continue checking at various gain setting steps until you are thoroughly experienced at operating the system, and have established the appropriate gain setting for the particular trailer involved.
DOT Inspection Note:
To demonstrate that the actuator and trailer brake system are functioning properly, adjust the up arrow on the in-cab controller until the system is set at its maximum gain setting (i.e. 6 green LED’s illuminated). Press and hold the red STOP button on the in-cab controller and attempt to drive through the trailer brakes. This will apply the maximum power to the trailer brake magnets and will demonstrate to DOT personnel that the trailer brakes are functioning properly.
I. Replacement Parts List / Mounting Dimensions:
2X Ø .213 MOUNTING HOLES
Manual 440-1002 Rev C
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