Replace Seals And Spacers Inside 5900-Bt Control - Clean Water Systems 5900-BT Neutralizer Operation & Maintenance Manual

5900S Neutralizer Operation & Maintenance Manual

Replace Seals and Spacers Inside 5900-BT Control

1. Remove the control valve cover.
2. Remove screw and washer at drive yoke.
3. Remove powerhead mounting screws. The entire powerhead assembly will now lift off easily.
4. Remove piston retaining plate screws.
5. Pull upward on end of piston rod yoke until assembly is out of valve. Remove seals and spacers.
(Note: Special end spacer must be reused)
6. Lubricate new seals with silicone lubricant included in the seal and spacer kit. Make sure the
special end spacer is properly seated in the valve body.
7. Install new seals and spacers individually, pressing around the outer edge of each seal to make
sure it is seated.
8. (When all seals and spacers are seated properly, you will have a 1/4" of space between the top
seal the top of the valve body)
9. Take new piston assembly and push piston into valve by means of the end plug.
10. Twist drive yoke carefully in a clockwise direction to properly align it with drive gear. Reinstall
piston retaining plate screws.
11. Place powerhead on top of valve. Be sure drive pin on main gear engages slot in drive yoke.
12. Wide side of yoke upright must face to the left away from the motor.
13. Replace powerhead mounting screws.
14. Replace screw and washer at drive yoke.
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