Specifications

ORC SERIES, MODEL S CLUTCHES
11
ORC Series, Model S
BOSTON GEAR
BOSTON GEAR
®
D. Limit Switch Actuating Mechanism (LSAM)
Assembly
1. Apply a graphite lubricant to the release ring groove
of the cover (8).
2. Insert the actuating stud (40) through the appropriate
hole in the release ring (35). To identify this hole
place the release ring in the groove of the cover.
When the trip pin holes line up with the through holes
of the cover, the actuating stud hole will line up with
the counterbored hole in the groove of the cover.
3. Install the actuating stud nut (39) onto the actuating
stud (40) and tighten.
4. Install a spring terminal (43) on each end of the
return spring (38). Clutch sizes 5 & 6 require two
return springs.
5. Insert a spring terminal screw (41) through the hole
of the spring terminal (43), and place a spacer collar
(36) on the end of the screw. Insert the end of the
screw into the threaded hole of the release ring (35)
and tighten. The end of the screw may protrude past
the release ring. Grind the end of the screw flush with
the surface of the release ring. Install second spring
terminal screw on clutch sizes 5 & 6 as just
described. Move to Step 13 for clutch sizes 5 & 6.
6. Press the trip pins (32) into the trip plate (31).
7. Install a bowed snap ring (34) into the groove of each
trip pin located next to the trip plate.
8. Place the trip plate flat on a table with counterbored
holes facing up. Insert the thrust springs (37) into the
counterbores.
9. Place the cover (8) over the trip plate, lining up the
counterbores in the cover with the springs.
10. Place the release ring (35) into the groove of the
cover. Make sure that all of the holes line up
properly.
11. Insert a spring terminal screw (41) through the hole
of the other spring terminal (43) and place a spacer
collar (36) on the end of the screw. Insert the end of
the screw into the tapped hole of the cover and
tighten.
12. Push down on the cover and release ring until the
release ring engages into the grooves of the trip pins.
Install two snap rings (33) into the grooves of each
trip pin. Move to Step 22.
13. Place the release ring (35) into the groove of the
cover. Make sure that all of the holes are properly
aligned.
14. Insert the trip pins (32) through the matching holes in
the release ring (35) and cover (8). Make sure that
the tapped hole of the trip pin is inserted first.
15. Slide the release ring (35) counterclockwise so that
the ring engages into the grooves of the trip pins.
16. Insert a spring terminal screw (41) through the other
spring terminal (43) and place a spacer collar (36) on
the end of the screw. Insert the screw into the tapped
hole in the cover and tighten. Repeat this process for
the other return spring .
17. Turn the cover over so that the release ring is facing
down against the surface of the table.
18. Insert the thrust springs (37) into the counterbores of
the cover.
19. Place the trip plate (31) over the cover making sure
that the springs will sit in the counterbores of the trip
plate and that all the holes properly line up.
20. Press down on the trip plate (31) until it stops against
the trip pins.
21. While pressing down on the trip plate (31) insert the
plate mounting screws (42) into the tapped holes of
the trip pins and tighten.
22. Press the cover assembly onto the housing
assembly (1). Make sure that the trunnion holes and
the mounting screw holes line up.
23. Install the cover screws (27) and tighten to the
recommended seating torques shown in Table 13.