Warner Electric UNIBRAKE - Manual (Page 5)

5 Warner Electric • 800-825-9050 P-1699-WE
Torque Adjustments
Most applications do not require torque
adjustments. Unibrakes
are factory set for rated
torque which is maximum
torque. To increase
stopping time or reduce
torque on 3, 6, and 10 ft.
lb., turn 2 lock nuts “A” an
equal amount counter-
clockwise to increase
spring length. For the 6,
10, and 15 ft. lb. brakes,
one full turn will reduce
torque by about 12-1/2%.
The 3 ft. lb. brake will be
reduced in torque by about 8%. Torque should not
be reduced by less than 1/2 of the rated torque.
If torque is adjusted, measure air gap (see wear
adjustment) and verify it is within dimensions from
Gap Chart.
1) Disconnect power brake
before touching any internal part. 2) Any loads
that are held in position by this brake must be
supported before performing any adjustments
or maintenance.
Friction Disc Replacement
Rear Mounted Coupler
Rear Mounted
Remove cover, (2) cover support studs “G”, and (2)
3/8-16 mounting cap screws at “M”.
Lift off brake mechanism assembly. Remove
pressure plate(s) and brake disc(s). Replace with
new pressure plate(s) and disc(s). Reassemble
brake mechanism assembly. Multiple disc units,
the domed pressure plate is positioned furthest
away from the motor or brake head; the (B) wear
adjustment screws are in contact with this plate.
Note: Cast Iron Heads: Last disc uses the cast
housing as a friction surface. Set air gap for wear
adjustment.
Coupler
Remove (4) hex head screws that hold the
cover/shaft assembly to the brake head. Remove
the (4) 3/8-16 mounting cap screws at “M.”
Remove (2) 1/4-20 round head screws and lift off
brake mechanism assembly. Remove pressure
plate(s) and brake disc(s). Replace with new
pressure plate(s) and disc(s). Reassemble brake
mechanism assembly. Multiple disc units, the
domed pressure plate is positioned furthest away
from the motor or brake head; the (B) wear
adjustment screws are in contact with this plate.
Set air gap for wear adjustment.
Magnetic Coil Replacement
Rear Mounted
Remove cover, (1) cover support stud “G”, (1)
3/8-16 mounting cap screw “M” and (2) slotted
screws “E”.