•
A decrease in road speed when applying the exhaust brake during a
descent, except when your vehicle is carrying a heavy load or the
grade is extremely steep. In these instances, you may need to apply
the service brakes occasionally.
TRAILER BRAKES
Trailer Brake Hand Control (If Equipped)
WARNING:
The hand control should never be used to apply the
brakes when the tractor and trailer are parked unattended. Air
may leak from the system and the vehicle could possibly move,
resulting in possible property damage, personal injury or death.
The hand control is located on the
right-hand side of the instrument
panel. It applies the trailer service
brakes, which are independent of
the truck or tractor service brakes.
It operates a valve that provides
gradual control of air pressure
applied. When the valve is only
partially applied, you can override the trailer brakes by pressing fully on
the brake pedal.
To apply the trailer brakes using the hand control, move the lever
downward. The further you push the lever down, the greater the air
pressure is applied to the brakes. The lever remains in place until
manually moved.
To release the trailer brakes, move the lever up completely.
Trailer Air Supply and Parking Brake Modular Controls
(If Equipped)
The trailer air supply valve delivers
air to the trailer supply and
automatically pops out, shutting off
the trailer supply, if pressure
decreases to approximately 35 psi
(249 kPa).
144
Brakes
2015 F-650/750
(f67)
Owners Guide gf
(ownloose)
, 1st Printing, December 2013
Canadian_French
(fr_can)