Hydraulic fan controller conversion on an RV (part 1)

Converting a hydraulic radiator fan controller from electronic to use a good old tried and true wax valve.
Part 2 is here: https://www.youtube.com/watch?v=3N9ZCPpwnh0

This probably isn't the best video blog, but my primary focus was getting the job done in a timely manner. I tried to remember to pick up the phone and take video as much as I could. I also tend to ramble, hence some of the cuts.

Wax valve was obtained from here: https://www.ebay.com/itm/252781614428

Hydraulic fittings all obtained from here: https://www.hydraulicstore.com/

The fittings I used (your coach may be different):

90 degree elbow -4 JIC to -5 ORB (pressure side) https://www.hydraulicstore.com/connectors/steel-adapters/sae-o-ring-boss-orb/6801-adapters-male-jic-x-male-sae-orb-90-degree-elbow/6801-04-05-adapter.html

-6 JIC to -4 ORB (return): https://www.hydraulicstore.com/connectors/steel-adapters/sae-o-ring-boss-orb/6400-adapters-male-jic-x-male-sae-orb/6400-06-04-adapter.html

What I made the weld bung from: https://www.hydraulicstore.com/connectors/steel-adapters/sae-o-ring-boss-orb/6404-adapters-female-sae-orb-x-male-pipe/6404-12-12-adapter.html

Note that the pressure side will change when I decided whether to use an orifice or needle valve on the pressure line to make fan run at low speed for AC head pressures.

Видео Hydraulic fan controller conversion on an RV (part 1) канала GoFast