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1.3.3 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 unable to release,
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.
Specifications
Rated torque Rated power Rated air gap
Max. air gap
Tightening torque of
mounting screw
16 Nm 30 W 0.2 mm 0.3 mm 9.0 Nm
When the brake is off power, adjust three hollow screw(7), with the help of feeler gauge, adjust the
air gap between armature and friction plate to rated value “Z”, ensure that air gap of each direction
is the same. Here follows the adjusting procedure:
– Screw off three mounting screws（1）.
– Rotate three hollow screws(7) with spanner in clockwise.
– Screw down three mounting screws（1）.
– Use feeler gauge to check if air gap ”Z” is rated air gap value. Repeatedly adjust “Z” to
specified value.
Z
+
-
7
1
In general working condition, the first air gap adjustment should proceed after brake working for
1500～2000hours, frequency of air gap adjustment is every 6 months. In severe working condition,
like frequently brake, repeatedly sudden brake, the first adjustment can be shortened and adjust
the interval.
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