Trouble shooting – Blue Ox BX88175 User Manual
Page 5
© 2002, 2006
Blue Ox Division, Automatic Equipment Mfg. Co. • One Mill Road, Industrial Park
Pender, Nebraska 68047 • Phone 402-385-3051 Fax 402-385-3360 •
If the light comes “ON” by itself you must “STOP” and investigate the cause, it may be that the
“BREAKAWAY PIN” HAS PULLED DUE TO A TOW COMPONENT FAILURE.
If the Vac Brake™ worked properly during the tests of the TOAD and not with the RV, double-check
your vacuum source and electrical connections making sure the harness terminals align properly
between vehicles. Make sure vacuum check valves are allowing the vacuum to
ow in the correct
direction.
NOTE: MAKE SURE THE SYSTEM OWNER RECEIVES THE INSTALLATION INSTRUCTIONS!!
OPERATION OF BRAKE SYSTEM
RV DASH SWITCH
A. Toggle switch is lighted to indicate brake activation in Toad vehicle.
B. Toggle switch light will activate during NORMAL braking in Toad vehicle.
1. Toggle switch light should never be ON unless brake is applied in RV.
2. If toggle switch light is ON the brakes on the Toad are ON.
3. If toggle switch light is ON and you have not applied the brake in the RV, you must take
corrective action and
STOP the RV to investigate.
a. You may have a tow component failure that has triggered the breakaway to apply the
Toad brake.
b. You may be expieriencing a malfunction of the system, which would require you to disable it.
C. Normal braking in the RV will result in the RV feedback toggle switch LIGHTING to indicate braking on the Toad.
It
is normal for the release of the brake in the RV to be followed by the release of the brake in the Toad and the
toggle switch light shutting off.
THE RV DASH SWITCH ALLOWS THE DRIVER TO COMPLETELY CONTROL THE BRAKING ON THE TOAD.
THERE ARE THREE MODES TO THE RV DASH SWITCH.
1. CENTER POSITION: THE SYSTEM IS "OFF", THE ONLY THING THAT CAN ACTIVATE THE BRAKE IS THE
BREAKAWAY SWITCH.
A. USE THIS IN A CITY WHERE YOU MOVING SLOWLY AND DO NOT NEED BRAKING.
B. USE THIS GOING DOWN A HILL AND WANT TO APPLY BRAKING WITH MOMENTARY MODE.
2. UP OR LOCKED "ON" POSITION: THE SYSTEM WILL ONLY APPLY BRAKING IN THE TOAD WHEN THE RV
BRAKE IS APPLIED.
3. MOMENTARY POSITION: BRAKING IS APPLIED IN THE TOAD WITHOUT THE NEED TO APPLY THE RV BRAKE.
TROUBLE SHOOTING
System will not activate from RV. Check the “ground” between vehicles, (system uses only ½ amp to
activate) and the lighting ground between the vehicles may not be good enough for the Vac Brake™ system to
get ground. A better ground from the Vac Brake™ solenoid may be needed
System will not release from RV. Check for a “12VDC backfeed” to the activation wire on the solenoid.
Isolate and add diode or change wiring to eliminate the “12vdc backfeed” condition. Pulling apart the wire
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(closer to the lighting ground wire between vehicles).