72 Culligan® CSM Series Softeners
72 Cat. No. 01016370
Pilot Valve Assembly Removal
1. Refer to steps 1 thru 3 under "Pilot Valve Spool Removal & Replacement" on page 71.
2. Mark and remove all pilot valve tube connections from the pilot valve body.
3. Disconnect the four quick connect wire leads from the microswitches. Also disconnect the two motor
leads from the circuit board. See Figure 115 and Figure 116.
4. Remove the 2 large panhead screws with nuts located at the bottom of the enclosure that secure the
pilot valve body assembly. The pilot body assembly will now separate from the enclosure.
5. Refer to "Pilot Valve Assembly Replacement" on page 73 for reinstallation instructions.
Figure 115. Figure 116.
Pilot Drive Motor Assembly Replacement
1. Refer to steps 1 thru 5 under "Pilot Valve Assembly Removal".
2. The pilot valve drive motor assembly is held in place with 3 panhead screws. Remove the screws and discon-
nect the motor leads.
NOTE At this point it is also advisable to visually inspect the cam gear and microswitches for any wear indi-
cating the need for replacement.
3. Install the replacement pilot valve drive motor assembly making certain that the gears and assembly are prop-
erly engaged. Securely tighten the 3 screws and reconnect the motor leads (Figure 116).
4. Reinstall the pilot valve body assembly in the enclosure. Make certain the pilot valve position faces left when
viewed from the front of the controller. Reconnect the four quick connect wire leads to the microswitches.
Connect the two motor leads to the circuit board. Reconnect all pilot valve tube connections.
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