7
Inspection and maintenance
102
07.2020
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1 Re
v A
E
Slide a new brake rotor (11), identical to the previous rotor, onto the hub (12) and
check the clearance.
NOTICE
Danger of damage
–
If increased clearance is present in the gearing between the brake rotor (11) and
hub (12), remove the hub (12) from the motor shaft and replace it. Be sure to
consult the production factory before removing the hub (12).
Replace the brake pressure springs (see section
Replacing the pressure springs
).
Check the O-ring of the coil carrier for damage and replace if necessary.
Clean coil carrier.
Assemble in reverse order.
–
Steps 14 to 19 are omitted.
–
Make sure that the inspection bore for the air gap measurement matches with the
opening in the fan cover. Secure the stud bolts (6) with thread locker.
–
After tightening the fastening screws (8) (for tightening torque see Tab. 29), mark
the fastening screws (8).
Hoist motor type
Hoist brake
S max.
a
Tightening torque (8)
[in]
[in]
[lb
f
ft]
4H33-MF10MB-200
NM38720
0.024
1
7
4H42-MF10MC-200
NM38730
0.024
1
7
4H62-MF11MA-200
NM38740
0.031
1
16
4H71-MF11MB-200
NM38740
0.031
1
16
4H72-MF13Z-200
NM38741
0.031
1.2
16
4H73-MF13ZB-200
NM38753
0.035
1.2
16
4H81-MF13ZC-200
NM38753
0.035
1.2
16
4H82-MF13X-200
NM38781
0.035
1.2
16
Tab. 29
Check the brake data against the rating plate on the hoist motor!
