TST 507 sensor question

fj12ryder wrote:

Ron3rd wrote:
I've got the TST 507 system, about 5 years old and it works fine. I want to replace the little valve stem seals in the sensor (where it seals against the valve stem) and my question is; how do you get the old seals out??!! I'm using a small pick and it's being difficult. For those of you that have replaced these seals, any tips are appreciated.

Why do you want to mess with it if it's working fine? Never forget the old adage: "If it ain't broke, don't fix it".

Get where you're coming from, but it is "broke". Seals have broken down and leaking, causing alarms after 5 years. I've never replaced them. It's time now and I figured it out; you need a small curved dental pick to get the old ones out. New ones are forced in, they sit in a counterbore; it's not intuitive but I got it going.

TST gave me extra seals when I bought the unit but they did not look right for the application. Got the old ones out and they're the same as the replacements, so I got it figured out and all is well. TST btw has no heads-up on this online, but overall it's a very good system and I otherwise have no complaints.