jimdavi
Senior Member
- Joined
- Aug 18, 2014
- Messages
- 473
- Location
- USA
- Vessel Name
- Couple’s Retreat
- Vessel Make
- 2019 North Pacific 45
Howdy- my main pump failed this am, thankfully I had a spare shurflo 4158 5GPM - Checked old pump, and noticed open circuit between pressure switch and ground. New pumpm from switch to ground had 13 ohms. Assume at zero pressure, there should be continuity through switch, with some resistance, but not open to ground. That way pump runs at low pressure. Pulled switch apart and seems incredibly stiff to depress. Thought I’d just get a new head assembly. Any other thoughts? Thanks all.