Replacing The Loader Range Spring, Diaphragm Assembly, Ball Seat, Tubing, And Ball - Fisher 4195 KB Series Instruction Manual

4195KA, KB, and KC Series
5. Remove the tubing assembly (key 309).
CAUTION
The switch body springs (key 295) are
under preload. To avoid personal injury
or losing parts, carefully separate the
switch body assembly from the loader
assembly.
6. Loosen the two screws (key 290) and separate the
switch body assembly (key 291) from the loader as-
sembly (key 282).
7. Remove the O-rings (keys 292, 293, and 294),
switch body springs (key 295), and balls (key 296).
8. Loosen two screws (key 308), and remove the
closing plate (key 307) and the closing plate gasket
(key 306).
9. Pull the clip (key 300) from its engagement with the
lever assembly shaft (key 297).
10. Pull the lever assembly from the switch body as-
sembly (key 291) and rocker (key 299).
11. Remove the O-ring (key 298).
12. Inspect the O-rings and gaskets for damage or
wear; replace if necessary.
Assembly
13. Insert the lever assembly (key 297) into the switch
body assembly (key 291) and hold the rocker (key
299) with the flats on the lever assembly shaft.
14. Insert the clip (key 300) in the groove of the lever
assembly shaft to hold the lever assembly (key 297) in
the switch body assembly (key 291).
15. Position the closing plate gasket (key 306) and
the closing plate (key 307). Secure with two screws
(key 308).
After assembly in step 15, be sure the
side of the closing plate marked OUT is
visible.
16. Place the balls (key 296), switch body springs
(key 295), and O-rings (keys 292, 293, and 294) in the
switch body assembly (key 291).
In the following step, the ends of the
springs must be in the counterbored
spring seats before compression.
5–36
Note
Note
17. Compress the switch body springs with the loader
assembly (key 282), and bolt the switch body assem-
bly (key 291) to the loader assembly with the two
screws (key 290).
18. Reconnect the tubing assembly (key 309).
19. Locate the lever spring (key 302) and the spring
seat (key 301) on the switch lever (key 304) and posi-
tion these parts in the opening of the loader assembly
(key 282).
20. Push the switch lever down, using the lever spring
seat (key 301) and the lever assembly (key 297) to
preload the spring. Make sure the notch of the switch
lever engages the pin of the lever assembly.
21. Drive in the groove pin (key 303) to hold the
switch lever.
22. Replace the lever cover plate (key 305) and at-
tach with two screws (key 288).
23. Perform the Assembly portion of the Replacing
the Auto/Manual Station procedure.
Replacing the Loader Range Spring,
Diaphragm Assembly, Ball Seat, Tubing,
and Ball
Refer to figure 5–31 for key number locations.
Disassembly
1. Remove the auto/manual station from the controller
as described in steps 1 through 4 of the Replacing the
Auto/Manual Station procedure.
2. Remove the tubing assembly (key 309).
WARNING
To avoid personal injury caused by pre-
load from the range spring (key 283),
turn the loader knob (key 287) counter-
clockwise (opposite to the arrow) to re-
lieve pressure on the spring.
3. Loosen the four screws (key 289), and separate
the upper loader assembly (key 282) and the lower
loader assembly (key 274).
4. Remove the loader range spring (key 283), range
spring cup (key 284), and diaphragm assembly (key
281).
5. Remove the tube (key 278), ball seats (key 280)
and ball (key 279).
Assembly
6. Turn the loader knob (key 287) counterclockwise to
back the spring adjustment screw (key 285) all the
way out to eliminate loading the range spring.