HANGCHA CDD15-WS - Maintenance; Brake Air Gap Adjustment

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1.6.3 Maintenance
– If work in high temperature environment for long time, please prevent rust, it may influence
use if there is rust on the suction surface.
– Do not touch the friction surface with hand, no oil stain, otherwise it cannot reach the
maximum torque.
– General use environment temperature is -10℃～+40℃.
– Please check periodically, and the check item : if the switch motion is normal; if there is
noise; if there is abnormal heating; if any impurity, oil stain mixed into friction part or rotating
part; if clearance of friction part is proper, exciting voltage normal.
1.6.4 Brake air gap adjustment
– Rated air gap ”Z” will be large for wear. Make sure the brake get enough brake torque,
readjust air gap before the air gap reach the largest air gap value. Air gap can be adjusted
repeatedly, when the thickness of friction braking plate reaches the allowable minimum
thickness (refer to specification table), replace the friction disk assembly.
– When the air gas exceeds maximum air gas value, it may cause the brake unabletorelease,
friction braking plate burn out, braking force or retentivity decreases, noises increase, or even
cause severe accident. So it needs periodic check and re-adjust the air gap, and it must cut off
the truck general power.
– In the case of power outage of the brake, adjust the air gap between the stator (1) and the
armature (2) to the rated value "Z" by adjusting three hollow screws (8) and the stator mounting
screws (9), and use a feeler gauge to ensure that the air gap is the same in all directions.
Specifications sheet
Rated
torque
Rated
power
Rated air
gap
Max. air
gap
Rotor min.
thickness
Tightening torque of
mounting screw
8Nꞏm
25W
0.2mm 0.5mm 6.4mm 5.5Nꞏm
In the event of power failure in the brake, adjust the three brake mounting screws (1) and hollow
screws (7), and use a feeler gauge to adjust the air gap between the stator (11) and the
armature (8) to the rated value "Z", ensuring that the air gap is the same in all directions.
The adjustment steps are as follows:
– Use an Allen wrench to loosen the brake mounting screw (1).
– Use a wrench to adjust the hollow screw (7).
– Tighten the three brake mounting screws (1).