6. Disconnect solenoid plunger (29) and
solenoid link (13) as an assembly and
discard.
7. To remove coil (12A) unscrew plunger
guide screw (84) and lock washer
(84W). Remove both plunger guides
(82) by prying up on the flanges.
a) To remove coil (12B) lift plunger
guide (82A) out of top of solenoid
frame (79). To remove coil (12B)
from solenoid frame (79), depress
lock tab at opposite lead wire side
of coil and slide coil sideways from
frame.
Note: If coil has burned out, be
sure to remove all foreign material
from solenoid plunger (29) and
solenoid frame (79).
8. Install coil (12A) or (12B) in reverse
order of 5 or 5a. Be sure that coil is
installed in solenoid frame in same
position and lock tab on coil (12B)
latches on solenoid frame.
9. Join new link (13) with cap screw
(13C) and nut (13N) to plunger (29).
Reinstall link to pin with spacers and
retaining ring. Mount frame (79) (with
plunger installed) with screws (132) in
same mounting position as removed.
Torque screws to 43 in-lbs after
aligning frame and plunger.
10. Manually lift solenoid plunger to
maximum travel. Depress and allow
solenoid plunger to snap out several
times. Measure solenoid air gap
between mating surfaces of solenoid
frame and solenoid plunger. (On
vertically mounted brakes, it will be
necessary to push solenoid plunger
into solenoid frame to the point where
spring pressure is felt, before
measuring solenoid air gap.)
If solenoid air gap exceeds gap in
Table, adjustment is suggested.
The solenoid air gap measurements
are shown in Table below.
11. The solenoid air gap may be
decreased by turning both wear
adjustment screws (10) equal
amounts clockwise, approximately
1/8 turn, until approximate solenoid
gap is attained. Counterclockwise
rotation will increase gap.
12. Reconnect solenoid coil leads.
13. Replace housing (and housing nuts) in
reverse order of the appropriate point
in step 1.
14. Caution! Do not run motor with brake
in manual release position. It is
intended only for emergency manual
movement of the driven load, not as a
substitute for full electrical release.
NOTE: For complete instructions,
with
troubleshooting, request sheet
applicable to the series of brake that
you have.
Nominal
55,700
Static Torque
(lb-ft)
1.5, 3
13/32
6
1/2
10
1/2
15
9/16
Table: Solenoid air gap measurements
Rexnord Industries, Inc.
Stearns Division
5150 S. International Dr.
Cudahy, Wisconsin 53110
Phone (414) 272-1100 Fax (414) 277-4364
Copyright
©
1998 by Rexnord Industries, Inc.
