- Remove the four screws that attach your cam cover or zone indicator to the valve top and lift it off.
- There is one slot in the cam that goes all the way through, line the lob on the stem up with that slot and remove the cam.
- Make certain that an o-ring is present on both sides of your new cam and that the numbers are facing up when you install the new cam.
- Slide the cam down over the stem the same way you removed your old cam and line the cam notch up with the locator pin on your valve top.
- Replace the cam cover and re-tighten your screws.
- Pipe up to the outlets that are directly below the numbers on the cam. (On the 7 zone cam the outlet marked 8 will be your inactive outlet). Cap off any un-used outlets.
Tips and Suggestions:
When installing the cam we suggest first turning the screw counter clockwise until you feel a ‘pop’ as the screws falls into the old thread. You can then turn the screw clockwise and tighten. This prevents the chance of stripping out screws as they form new thread in the plastic. It is always best to install with a hand held screwdriver.
Due to re-engineering of our Fimco Stem and Disc assembly and our Fimco cams…our older 5 zone cams are not backwards compatible with the new stem and disc assembly. This applies to all installations prior to 2016. If you are running 5 active zones on your older system and are purchasing a new cam we would recommend you to also purchase a new stem and disc assembly. Thank you for your understanding as we implement these changes to create an even better product. You can purchase a new stem and disc assembly here.