KOBELT MANUFACTURING CO. LTD MNL-5027-A.docx (rev B)
12
3
C
OMMISSIONING
3.1
A
IR
G
AP
Prior to putting the brakes into service ensure that the airgap between the brake pads and disc
when the brakes are released is set to .01
” [.
25 mm] per shoe. Adjust if necessary, per
3.2
F
UNCTION
T
EST
Before burnishing the brakes perform a quick inspection and function test of the brakes:
(1)
Ensure that all mounting bolts are properly installed.
(2)
Ensure proper running clearance (air gap) with the disc.
(3)
Ensure unobstructed movement of the brake levers for full actuator extension.
(4)
Ensure the brake disc surface is clean. Remove all contamination from the disc with
cleaning solvent.
(5)
Check the source of fluid supplied that it complies with the specified pressure range and
that it is properly interlocked with other machinery such as clutches, electric motors,
etc.
(6)
Check that all bolts are tight and cotter pins are in place.
(7)
Cycle the brakes and ensure that the brakes are operational
3.3
B
URNISHING
Burnishing is required in order to achieve rated brake torque. The process of burnishing
removes minor contaminants from the rubbing surfaces and improves the degree of contact
between the brake pad and disc.
Before burnishing, the brake disc must be checked to ensure it is free from contamination and
oil. Use a solvent and cloth to remove any oil residue. Slight surface rust will be removed during
the burnishing process, but heavy rust should be removed prior to burnishing.
If present, safety interlocks of the drive mechanism should be temporarily defeated to allow the
disc to be driven with the brake partially applied.
The temperature of the disc surface must be monitored during the burnishing process and kept
between 250
o
F (120
o
C) and 500
o
F (260
o
C). If the upper temperature is reached, pause the
burnishing process until the disc is cooled to the lower limit.
Extreme care must be taken not to overheat the disc during the process. On water cooled discs it
may be necessary to limit the flow of cooling water in order to achieve the necessary disc
temperature for effective burnishing.
Summary of Contents for 5027-A
Page 22: ...KOBELT MANUFACTURING CO LTD MNL 5027 A docx rev B 22 7 APPENDIX A TECHNICAL DRAWINGS...
Page 23: ...KOBELT MANUFACTURING CO LTD MNL 5027 A docx rev B 23...
Page 24: ...KOBELT MANUFACTURING CO LTD MNL 5027 A docx rev B 24 8 APPENDIX B PARTS LIST DRAWINGS 5027 A...
Page 26: ...KOBELT MANUFACTURING CO LTD MNL 5027 A docx rev B 26 5027 AW...
Page 28: ...KOBELT MANUFACTURING CO LTD MNL 5027 A docx rev B 28 6130 Actuator...
