Figure 38.
Detached speed reducer.
16
5. Remove hexhead screws that secure
the speed reducer to the actuator
housing.
6. Lift out the speed reducer with toggle
assembly and opening spr ings
attached as shown in Figure 38.
Remove the springs from the lower
spring link.
7. Remove the C ring to release the flat
washer, lower spring link, spacer and
toggle assembly from the toggle
shaft. Remove C ring and closing
spring bushing from the crank lever.
8. Replace spring link and spacer on
toggle shaft of new speed reduc-
erand secure with C ring. Attach
opening springs to spring link.
CAUTION:
Stop bolt, for
operating shaft lever, is factory
set and should never be readjusted.
!
9. Install new speed reducer in actua-
tor housing. Moderately tighten hex-
head screws. Be sure latch lever is
positioned behind stop-lever roll pin
as shown in Figure 36.
10. Lift trip lever and insert toggle pin to
secure toggle, spacer, and upper
spring link to shaft lever. Secure pin
with C ring. Attach opening springs
to upper spring link. Be sure toggle,
spacer, and link are positioned as in
Figure 37.
11. Attach mounting plate to speed
reducer frame. Slip pull rod through
mounting plate slot and secure with
speed nut and washer.
12. Tighten hexhead screws that secure
speed reducer to actuator housing.
13. Install closing spring bushing and
secure with C ring.
14. Attach closing spring onto crank
lever drive pin. Operate actuator
mechanism manually with crank to
close contacts. Open contacts with
manual trip rod. Repeat operation
of actuator mechanism electrically
and check for proper operation.
