Warner Electric Autogap 825-1525 Special Heavy Duty - Manual (Page 2)

2 Warner Electric • 800-825-9050 819-0312
Primary Brake SF - Stationary
Unit PB Field Clutch
Part Magnet Armature Rotor Field Armature
Check
.010 T.I.R. .010 T.I.R. .006 T.I.R. .006 T.I.R. .006 T.I.R.
Concentricity Outside Drive Pilot Dia. Outside Drive
Diameter Pins I.D. Diameter Pins
.006 T. I. R. .006 T. I. R.
Squareness Outer Pole .006 T. I. R. Outer Pole .006 T.I.R.
of Face Face of Face Face
Step 6. Slide the armature and the hub with
taperlock bushing over the shaft until the face of
the armature contacts the face of the magnet or
rotor. Move armature assembly to provide a
clearance of 1/16 inch between the armature
face and magnet or rotor face.
The assembly should be checked by pressing
the armature into contact with the friction face
and then releasing the armature. The armature
should spring back approximately 3/64-inch.
This gap wilI be automatically maintained
throughout the life of the unit.
Note: During the assembly of the clutch or
brake components, the units must be checked
for concentricity and squareness to the shaft.
This is accomplished by using a dial indicator.
The following table gives the check points and
tolerances. (See Figure 5)
Step 4. Draw drive pins up tightly until shoulder
of pin is against face of hub (since threads are
class No. 3, pins may seem to bind).
Step 5. Check to see that the armature is com-
pletely compressed against the face of the hub.
To set the autogap, slide the detent spring
retainers against the armature face.
(See Figure 4)
Note: This position must not be disturbed dur-
ing completion of assembly.
Figure 4
(Figure 5) Tolerance Table