air in water lines - maybe problem fixed

levbob

Replaced filter next to water pump with new filter.  Runs now with no air in water lines, pump pressurizes system then shuts off.
Unscrewing clear plastic cap on old filter shows distorted O-ring - probably where air came in.  Will carry spare filter
now Shurfow 255-213

Sharon_is_SAM

We also carry a spare.

vhollow

Good advice! Thank you both.

levbob

Reason why the O-ring could move out of groove and loose seal was deformed plastic casting in clear plastic cover of Shurflo 255-213. O-ring groove malformed.

Bayliss

Good to know, @levbob.  Thanks for posting a photo.  I have made a note of it!