Warner Electric Autogap New ER-1225 and ER825 - Manual (Page 5)

5 Warner Electric • 800-825-9050 P-230-1
Step 6: Assemble each new follow up cup
(item 9) over the pin and over the red
spring (item 8) as shown in Figure 3,
Detail B.
Do not expand retainer ring
(item 10) more than needed to slide over the
pin (item 4). Expanding the retainer ring too
far can cause it to yield or break.
Step 7: Assemble each retainer ring in the pin
groove (item 16) as shown in Figure 2.
Make sure the retainer ring is
fully seated in the groove.
Step 8: Place the armature/hub assembly on a
flat surface with the armature working
face up and push down on each
detent cup with fingers to slide the
armature down until the armature
can't be pushed down any further, as
shown in Fig. 4.
Figure 4
During steps 9 through 11, han-
dle the armature/hub assembly by the hub
(item 2) only, making sure the armature (item
3) is as close to the retainer ring (item 10) as
possible. Any movement of the armature on
the pins will reduce available armature travel
and may cause improper setting of the run-
ning air gap.
Note: Steps 9-15 below are to be performed at
the installation site.
.062 inch thick shims are rec-
ommended. Do not use shims thicker than
0.125 inch or you will shorten brake life by
reducing available armature travel.
Keep fingers clear of the area
between the magnet (item 11) and the arma-
ture (item 3) as the armature will be pulled
sharply toward the magnet after the gap
between them is closed to approximately 1/8
inch. See Figure 3. Injury can result if fingers
are pinched between the armature and mag-
net.
Step 9: Turn off power to the brake. Place
three steel shims 120 degrees apart
on the magnet as shown in Figure 5.
Insert the taper-lock bushing (item 1)
into the hub (item 2). Align the two half
drilled holes in the taper-lock bushing
(item-1) with the two half threaded
holes in the hub (item-2). Insert the
two set screws into the above aligned
holes & screw them loosely in by hand
to maintain the alignment during
assembly.
Slip the armature hub assembly onto
the brake shaft until the armature
makes contact with the shims. Place a
drift at several points around the cir-
cumference against the large end of
the taper lock bushing (item 1) and tap
it lightly with a small hammer (approxi-
mately 8.oz), until it does not slide far-
ther on the shaft.
Figure 5
Apply Downward
Pressure on the
Detent cup. Armature Working
Face up
3
2
11
1
Armature
Press two places
on armature to
set air gap
Hub
Magnet
Three shims 120° apart
Push
Taper Lock
Bushing