4-5
SPRING (VALVE DISCS)
This spring is a one-piece metal spring that applies pressure to the valve discs holding them closed. The rotating camshaft overcomes this pressure to open the
valve discs as needed. The shape of the spring is critical for proper operation.
IMPORTANT NOTE
Do not attempt to straighten or repair this spring. If this spring is damaged, valve discs may not operate correctly.
To remove spring:
1) Disconnect power to the unit.
2) Remove cover.
3) Remove motor.
4) Remove camshaft.
5) Place unit in bypass.
6) Release water pressure by pushing the last valve discs open with a screwdriver.
7) Locate valve discs 3, 4 and 5.
8) Position yourself on the spring side of the valve discs.
9) Place two (or more) fi ngers on the fl at part of the spring.
10) Move the fi ngers toward the valve discs and into the spring valley between the previously located valve discs.
11) By pulling back and up on the spring, the spring will pop out of the valley.
12) Pull back further to remove the spring.
To install spring:
1) Inspect the spring for damage. Do not attempt to repair a bent spring.
2) Position yourself on the spring side of the valve discs.
3) Position the spring over the valve body close to fi nal position. The wide spring segments will be located at the wide valve discs. The curve of the spring will be
down into the valve.
The long fl at close edge is inserted fi rst. This edge slides into a channel on the valve body.
The spring will slide off the top of the valve disc downward. The small projection on the end of the spring will drop into the hole in the
valve disc to provide secure positioning. Repeat for all spring segments.
NOTE: If a spring segment goes beyond the locating hole, it can be pulled back using a small fl at blade screwdriver.
NOTE: In high pressure (80 psi and higher) applications, the standard single valve disc springs can be installed on top of the one piece
spring.
4) Rock the spring back and place the fl at edge into the channel.
5) Lower the springs until they rest on top of the valve discs.
A tool (Phillips screwdriver) will be needed to push the springs in place.
The spring posts will guide the spring into place.
6) Hold the fl at part down with one hand.
7) Spread your fi ngers apart to cover the length and push down.
8) With the other hand use the tool to push down in the valley of each spring segment.
Figure 34
Figure 35
