Position may be determined by assembling friction disc(s) and stationary
disc(s) onto hub, noting hub positions, and removing disc(s) using set
screws (16S); torque to specifications. Table below:
Set Screws (16S)
110 to 165 in-lb
200 to 190 in-lb
500 to 620 in-lb
(3) Reassemble friction discs.
Insure friction discs slide freely; file inside diameter If necessary.
The universal mounting pressure plate presently used has three tapered reliefs
on outboard face. Some older brakes used a pressure plate with a single
tapered relief marked top, which must be installed with relief facing manual
release rod (146).
(4) Mount support plate assembly, torque screws to 90 in-lbs in aluminum endplate and to 120 in-lbs in cast iron
endplate. Be sure that assembly is mounted with the solenoid in a vertical position (plunge above frame)
same as Figure 2-7. If release rod (146) is not in manual release position and has allowed the mechanism to
over adjust, it will have to be reset before mounting support plate. In this case the lever arm (17) (see Figure
2-8) throat will be near, or touching, the pinion (32) teeth. Refer to para 2-19.3 for self-adjustment
maintenance. Loosen pressure spring cap screw (19) until pressure spring (11) is free, mount support plate
assembly to endplate, and retighten spring cap screw until snug.
Do not over tighten.
(5) Manually lift solenoid plunger to maximum travel, release and check air gap. See para 2-19.3 if adjustment
is needed. Complete electrical connections. Depress and allow it to snap up. Repeat this process several
times to set air gap on solenoid.
(6) Connect wires to solenoid.
(7) Replace housing, nuts (15) and manual release knob (148).
Removal. Remove electric brake as given in paragraph 2-220.127.116.11a.
Installation. Install electric brake as given in paragraph 2-18.104.22.168c after disassembling as given in step 2a.