R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 54)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
• Unscrew the adjustment nut (6) for the brake air gap.
• Extract the brake parts. If the thickness of the friction material is less than 5 mm, replace all the brake
parts.
• Re-assemble in the reverse sequence.
• Adjust the brake air gap. Refer to the section 'Adjustment of Compact-brake air gap’.
5.20.3 Removing DC-brake and inspection of brake friction disc
c_trmobr3b
1. Power supply plug
2. Motor cover
3. Brake fixing screws
4. Brake friction disc
S. Thickness of brake friction disc
• Ensure there is no danger of live voltage.
• Remove the power supply plug (1) for the travelling machinery.
• Open the motor cover (2).
• Unscrew the brake fixing screws (3).
• Check the brake type on the rating plate fixed to the brake. Measure the thickness of the brake disc
(4). Replace the brake disc if it has worn thin.
Brake type and size Min. thickness of
brake disc
Tightening torque for
brake fixing screws
NM38710NR#, 2 Nm 5.8 mm 2.5 Nm / 1.8 lbf.ft
NM38711NR#, 4 Nm 5.95 mm 2.5 Nm / 1.8 lbf.ft
• Re-assemble in the reverse sequence.
!
Tighten the fixing screws of the brake to the correct tightening torque.
5.20.4 Dismounting the travelling motor
• Ensure there is no danger of live voltage.
• Remove the power supply plug (8) for the travelling machinery.
• Unscrew the fixing screws (1) for the motor.