Adjusting The Pendulum; Manual Operation - Hayes ENERGIZE III Installation Manual

Adjusting the Pendulum

WARNING:
!
• Improper adjustment of the pendulum may result in poor performance of trailer
brakes.
• Brakes may be unresponsive, grabby, delayed, or pulsating.
A. Connect the trailer to the tow vehicle for this adjustment. If a load leveling hitch system is used, it
should be connected and operational. Locate the tow vehicle and trailer on a flat level surface.
Make sure the tow vehicle stop lamps are operating correctly and disconnect the tow vehicle/trailer
electrical connection.
B. Adjust the gain wheel to its maximum setting.
C. Depress the brake pedal far enough to turn on the vehicle stop-lamps. Hold this position.
D. Pull the pendulum leveling arm (Figure 1) toward the red indicator light. The red indicator light
should illuminate bright red.
E. Push the pendulum-leveling arm away from the indicator light until the light just reaches minimum
brilliance. The leveling arm (Figure 2) should be approximately straight down. Repeat steps D and
E several times to make sure the indicator light has just reached minimum brilliance.
F. Release the brake pedal. The pendulum is now initially adjusted. A readjustment may be
necessary if the loading of either the tow vehicle or trailer causes a considerable change in the tow
vehicle front to rear position. Also a further readjustment may be desired during road test and
performance adjustments.

Manual Operation

WARNING:
!
Manual operation via the manual slide lever may not disengage the Cruise
Control on some vehicles.
• The "Manual Slide Lever" (Figure 1) is located on the front right side of the controller.
• The further the manual slide lever is moved from the right to the left, the greater the amount of
trailer braking power.
• The manual slide lever operation is an independent circuit and overrides the gain wheel
adjustment to allow full braking effort when required.
• The Manual Slide Lever is used to apply the trailer brakes independently of the tow vehicle brakes
or to override the automatic trailer brakes when more braking is required.
•
The manual slide lever is used in emergency stop situations when more braking may be required
than is available with the Gain Wheel adjustment or for control of excessive trailer sway.
•
The tow vehicle and trailer brake stoplights will be illuminated during the manual lever activation.
TIP:
It is normal to hear the trailer brake magnets "hum" when operating the trailer brakes.