LEESON 143-5TC Double C-Face Coupler - Manual (Page 3)

Lift plunger/solenoid
lever assembly
out of coil.
Remove plunger guide.
A) Re-insert plunger into coil; drop
pivot pin into cradle of support plate.
B) Remove screwdriver.
A) Insert new coil.
(Lead wires in same
position as old coil.)
B) Insert plunger guide.
Insert screwdriver
between support
plate and lever
arm and pry
forward.
A B
A
B
Remove housing and disconnect power and wiring to coil.
Discard coil.
Vertical Brake Assembly
Single disc brakes (3 & 6 lb-ft) are universal
mount and do not require separator springs.
Double disc brakes (10-15 lb-ft.) are universal
mount but require separator springs which are
preassembled to the stationary disc. These
discs are inserted spring first into the brake.
Refer to figure 2A.
Reconnect coil and replace housing per installation instructions, page 2.
3
To increase air gap, turn both adjusting
screws (10) counterclockwise.
To decrease air gap, turn both adjusting
screws (10) clockwise.
As friction disc wear the air gap will increase. When plunger gets to the reset position, the air gap must be adjusted.
counter-clockwise
clockwise
Torque
Torque (lb-ft) 56,X00 Series
3 & 6 .38” ± .03”
10 & 15 .45” ± .03”
Air Gap Settings*
*For reference only
AIR GAP ADJUSTMENT
VERTICAL SPRING ASSEMBLY
COIL REPLACEMENT SERIES
Note: Air gap can be adjusted witout disassembly. Remove cover
plate (7A) and manual release plate (7B) and adjust as shown above.
7A
7B
Maximum gap should never exceed .80”.
Torque Adjustment
Brake is factory set for nominal rated static
torque which is maximum torque. Torque may be
decreased up to 50% for increased stopping
times up to 2 second stop time.
Turn both spring adjustment screws (11), Figure
3, equal amounts counterclockwise to decrease
torque. See Table A for torque reduction permis-
sible amounts.
Nominal Original Maximum % Torque
Static Spring Counter- Reduction
Torque Height clockwise per
(lb-ft) (inches) Turns Turn
3 1.50”
6 1.50”
10 1.56”
15 1.56” Figure 3
Table A
Figure 2A
TORQUE ADJUSTMENT
11
10 10
11
5-1/2 9%