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• heavy traffic
• high-speed highway driving.
To operate the brake, push the switch up to turn it on. Push the switch
down to turn it off.
While approaching a steep grade, make sure that the exhaust brake
switch is in the on position. The exhaust brake begins working as soon as
you remove your foot from the accelerator pedal.
Before descending a hill or steep grade, always select the proper gear. If
the transmission is taken out of gear while descending, it is possible that
you cannot select another gear because of maximum RPM being
governed.
Make sure the engine speed does not exceed the maximum allowable
engine RPM. Exceeding the maximum allowable engine RPM can result
in damage to the engine. Apply the service brakes to reduce the engine
RPM or make a slower descent by using a lower gear.
While going down the grade, use a low enough gear to descend safely
with a minimum application of the service brakes. As a general guideline,
use the same gear as you use to ascend the hill.
Exhaust Brake Operating Characteristics
When you remove your feet from both the accelerator and clutch pedals
and the exhaust brake switch is in the on position, the exhaust brake is
activated. The following conditions exist if the brake is operating
properly:
• A slight change in engine sound when the exhaust brake is activated.
• A smooth braking effect. Do not expect a retarding effect similar to
sudden, hard application of the service brakes.
• The retarding force possibly felt acting against your body when the
brake is applied (depending on the grade and vehicle load). This
force is actually preventing the vehicle from going much faster.
2013 F-650/750 (f67)
Owners Guide gf, 1st Printing, October 2012
USA (fus)
Brakes
A switch on the instrument panel,
in combination with the accelerator
and clutch pedal, allows the
operator to make maximum use of
the exhaust brake in the following
conditions:
• off-highway driving
• mountain driving
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