the clip keeps the o-ring compressed 'just the right amount'. as with all o-ring sealing situations ..that's fine at first, and for a while... but after a while the o-ring gets mushy or soft ...and it's no longer enough compression of the o-ring to seal therevery well.
On 8/24/2013 1:51 PM, David Beierl wrote: > At 01:20 PM 8/24/2013, David M wrote: >> Ok, I finally got the clips out (TWO identical ones). No-one ever >> mentioned two clips! Used a 2" long screwdriver. I would imagine >> reinstalling the clips will be a pain because I have no idea where >> the second one goes. > > Sounds as though the person installing the sender didn't have an > O-ring the right thickness, or else that the thermostat housing is > damaged. > > Time to get eyeballs on the thermostat housing maybe? I'd get some > PB-Blaster onto the bolts in case it needs removing, they've been > known to break on removal. And a new thermostat housing wouldn't be > amiss at this age regardless, it's 25 years old now. > > As I recall the proper O-ring is quite fat. I *think* it should be > doing its sealing against the wall of the cavity rather than by > pressure from the clip against the bottom. > > Yours, > David > |
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