Warner Electric 825-1525 User Manual

Autogap Installation for

Armature Boss

Straight Spring

(White)

Detent Spring

Retainer

Retainer

Ring

Detent

Spring

Drive Pin

Heavy
Spring

(Red)

Armature

Sizes 825-1525 Basic Brakes & Clutches

P-1366
819-0016

Failure to follow these
instructions may result in product damage,
equipment damage, and serious or fatal
injury to personnel.

Assembly Instructions

Step 1. Place straight springs (white) over

armature boss on back side of armature.

Installation Instructions

straight (white) springs and into threaded holes

in armature hub. (See Figure 3)

(See Figure 1)

Step 2. Compress heavy spring (red) against

retainer ring by sliding
detent spring towards
head of pin. (See Figure

2)

Step 3. Insert
assembled drive pins
through segmented side
of armature, through

(Figure 1)

(Figure 2)

(Figure 3)

Compressed

Be sure that straight white springs do not get
caught under shoulder of drive pins.

Step 4. Draw drive pins up tightly until shoulder

Warner Electric P-1366 • 800-825-9050

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
completely compressed against the face of the
hub. To set the autogap, slide the detent spring
retainers against the armature face.
(See Figure 4)

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)

Note: This position must not be disturbed during
completion of assembly.

Figure 4

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

Figure 5 - Tolerance Table

Warner Electric • 800-825-9050 P-1366 • 819-0016

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