BT RRE200 - Emergency Release of the Parking Brake; Checking the Brake Force

Brake and wheel 3000
Parking brake (3300)
Publication No. Date Valid from serial number T-code
261828-040 2008-08-21 6051502 815, 816
© BT Repair Manual RRE140/160/180/200/250 11 – 5
11.2.2 Emergency release of the parking
brake
If the parking brake will not disengage due to some fault other than the
parking brake itself being broken, there is a power switch in the fuse
box under the truck's foot step which energises the parking brake
directly, even if the truck is not in use.
If the parking brake does not work at all, it must be removed from the
truck – see section "11.2.4
Removing the parking brake from the truck".
11.2.3 Checking the brake force
1. Raise the truck so that the drive wheel is free of the ground.
2. Open the motor compartment hood.
3. Remove the cap at the centre of the parking brake (2.5 mm allen
screws).
4. Insert the M12 bolt in the hole in the motor shaft (for lifting), and
screw in. Use a torque wrench and an M12 flange bolt, or a normal
bolt with a flat washer. The maximum length of the M12 bolt should
be 20
mm.
Torque wrench setting: 90 Nm.
IMPORTANT!
Bolt grade must be at least 10.9.
5. Using the torque wrench, turn the motor shaft until the brakes are
released.
6. The braking force is too low if the brake is released before the
torque wrench starts to slip.
7. Adjust brake play to the correct value – see the section "Adjusting
play".
Check the brake force once more using the torque wrench.