3 Description and Operation
37
Never operate the vehicle if the truck or trailer ABS
warning (indicator) lights remain illuminated. This
indicates the ABS is not functioning properly. Shut the
vehicle down and have the ABS repaired immediately.
Operating a vehicle without a properly operating ABS can
result in loss of vehicle control, personal injury or death.
Parking Brake
Kalmar tractors are equipped with spring brakes for parking.
The parking system is operated manually by a cab-mounted
parking brake control valve (Figure 19). (Also see page 21,
items 5 and 6.)
The purpose of the parking (spring) brakes is to hold the
vehicle while in the PARK position.
Never apply the parking brake during normal driving.
Doing this will lock the rear wheels, possibly causing an
uncontrolled stop.
Parking Brake and Trailer Air Supply
Controls
Air pressure in the system must be at least 70 P.S.I. (4.83 bar)
before the parking brake control or the trailer air supply control
can be pushed in (releasing the spring brakes).
NOTICE
If the tractor air system is completely discharged, the trailer
parking brake control will be applied. The trailer parking brake
should not be released until the tractor brakes are rolling.
Parking the Vehicle
(Refer to Transmission on page 32 and Parking Brake above
for additional information.)
Standard Kalmar tractors are equipped with an Allison
automatic transmission and spring-operated parking brakes.
Allison transmissions are unlike an automobile transmission in
one important regard. They do not have a PARK position.
When parking your Kalmar tractor, there are some important
rules that must be followed.
Figure 19
Parking Brake and Trailer Air Supply Controls
