OM3062 8/11 Operating Instructions - Section 30
Page 30-9
9. Release the accelerator pedal and the torque
will be reduced, the test will stop and the brake
check light will turn off.
10. Place the directional control lever in the PARK
position. Release the service brake pedal.
11. If the truck failed the service brake test, notify
maintenance personnel immediately.
If the truck fails the service brake test, notify
maintenance personnel immediately. Do not
resume operation unless the truck passes all
brake tests.
NOTE: If the operator partially or fully releases the
accelerator pedal during the test, torque will be
reduced and the brake check light will go back on
solid when torque falls below the test set point. The
operator can re-apply the accelerator pedal to
increase torque and the brake check light will again
flash when the torque is at the test limit.
If the test exits abnormally, or if the operator simply
does not press the accelerator pedal far enough to
achieve the torque level for the service brake test,
the DID panel will display:
Brake Test ERROR
Test did NOT complete
Parking Brake Test
1. Place the directional control lever in the PARK
position.
2. Press the brake test switch and wait for the
brake check light to be on solid.
3. The DID panel will display:
Parking Brake or Retard Test READY
Press Accel or Retard Pedal to Start
4. Fully depress the accelerator pedal. The drive
system controller will enter propel mode and
generate torque up to the park brake limit.
5. The DID panel will display:
Park Brake Test ACTIVE
Check Truck Movement when Light Flashes
6. Once the torque has reached the limit for the
parking brake test, the brake check light will
begin to flash. This is the indication for the oper-
ator to make a determination as to the status of
the parking brake system.
• If the truck did not move:
The park brake system passed the test.
• If the truck moved during the test:
The park brake test has failed. Release the
accelerator pedal. If the truck starts to roll, apply
the service brakes to hold the truck stationary.
Notify maintenance personnel immediately.
If the truck fails the parking brake test, notify
maintenance personnel immediately. Do not
resume operation unless the truck passes all
brake tests.
7. When the operator releases the accelerator
pedal, torque will be reduced, the test will stop
and the brake check light will turn off.
To Next Page
