KOBELT MANUFACTURING CO. LTD mnl5028-A.docx (rev A)
17
5.2.3
Pin Wear
The pivot pins must be removed for inspection once every five years. If there is any evidence of
heavy scoring more than .01” [.25 mm] deep or
if any area of the pin has been worn down by
more than .01” [.25 mm] then replace the pins.
5.2.4
Brake Disc
The brake disc must be inspected periodically to monitor the condition of the braking surface.
When the condition of the braking surface has deteriorated to the point that the quality
requirements in section 2.2 are no longer met the disc must be removed and resurfaced or
replaced. Follow the minimum thickness allowances in the table below as a guideline for when
a disc must be replaced.
Table 5: Brake Disc Minimum Thickness Allowances
Brake Disc Minimum Thickness
Disc Series
Original Thickness
in [mm]
Minimum Thickness
in [mm]
4-10.5-XX
4.00 [101.6]
3.88 [98.6]
When re-machining the disc surface, equal amounts must be taken off of
each face.
1.
When re-machining the disc surface equal amounts must be taken off of each face.
5.3
S
ERVICE
5.3.1
Lubrication
Disc brake calipers equipped with spring applied, air released actuators must have a lubricator in
the control air system using light hydraulic oil as a lubricant. This is to prevent premature seal
wear and reduce seal friction.
All Kobelt calipers, during assembly, are pre-greased on the shoe pin and saddle pin with a Lithium
based NLGI 2 grease. These pins must be re-greased no less than once annually.
5.3.2
Stroke Adjustment
Follow the procedure below to adjust the brake shoe running clearance back within
specifications.
Procedure for Adjusting Air Gap:
1.
Remove the four actuator mounting bolts.
2.
Remove cotter pins from clevis pins
3.
Slide the clevis pins out
4.
Move actuator away from lever
Summary of Contents for 5028-A
Page 21: ...KOBELT MANUFACTURING CO LTD mnl5028 A docx rev A 21 7 APPENDIX A TECHNICAL DRAWINGS...
Page 22: ...KOBELT MANUFACTURING CO LTD mnl5028 A docx rev A 22...
Page 23: ...KOBELT MANUFACTURING CO LTD mnl5028 A docx rev A 23 8 APPENDIX B PARTS LIST DRAWINGS 5028 A...
Page 25: ...KOBELT MANUFACTURING CO LTD mnl5028 A docx rev A 25 5028 SAW...
Page 27: ...KOBELT MANUFACTURING CO LTD mnl5028 A docx rev A 27 6130 Actuator...
