Chapter 9.0: Maintenance and Repair

NEMA Standard ICS 9-1993, Part 1 recommends that brakes be fitted with new or re-lined shoes before the lining material is worn excessively. Refer to Table 4 for minimum thickness.

9.1: Replacing the Brake Shoes

9.1.(a): Remove and reinstall the brake shoes as follows. Use a lifting devise as necessary.

9.1.(a).(i): On a hoist lower the load to the floor and disconnect the load from the bottom block.

9.1.(a).(ii): Reset the bottom block on the floor, or on a suitable support. Chock drum to prevent rotation of the drum.

9.1.(a).(iii): Refer to Fig. 5.

9.1.(a).(iv): (1) Manually release the brake as instructed in Chapter 6.

9.1.(a).(v): (2) Remove cotter pin and withdraw the actuator drive end pivot pin.

9.1.(a).(vi): (3) Remove hitch pin at the active upper end of each link arm; withdraw the pivot pins.

9.1.(a).(vii): (4) Lift the brake rod and lever assembly clear of the brake body.

9.1.(a).(viii): (5) Remove hitch pin at the fixed lower end of each link arm; withdraw the pivot pins.

9.1.(a).(ix): (6) Lift out the link arm/brake shoe assemblies.

9.1.(a).(x): (7) Remove hitch pins and withdraw the shoe pivot pins.

9.1.(a).(xi): (8) Brake shoes can now be removed for service. To avoid loss, restrain the spring loaded shoe alignment tension device when removing a shoe.

8/17/2006

Page 26 of 33

MST/E Electric Shoe Brakes Manual

 

 

560022-R6