Kobelt 5022-A, Owner'S Operation, Installation & Maintenance Manual

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KOBELT MANUFACTURING CO. LTD MNL-5022-A.docx (rev B) 18
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]
2-4-XX
2.00 [50.8] 1.90 [48.5]
When re-machining the disc surface, equal amounts must be taken off of
each face.
5.3 S
ERVICE
5.3.1 Lubrication
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.
Note that the actuator uses a diaphragm seal and does not require lubrication.
The actuator diaphragms are not compatible with mineral oils. Do not
lubricate diaphragm actuators with mineral oil as damage to the diaphragm
will occur.
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