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water level switch... sealant?
Posted: 24 Nov 2010, 13:17
by gaz f
Hi all,
I just changed my header tank as the old one had cracked, problem I now have is the level switch now weeps very slightly around it's rubber seal ring when the system pressurises up. The seal looks to be in good condition so I'm wondering if your supposed to use a sealant when you put the switch in? When I removed it from the old header tank it didn't look to have had sealant on it although I did clean some gunge off of it that may or may not have been sealant.
Re: water level switch... sealant?
Posted: 24 Nov 2010, 13:23
by Ian Hulley
I fitted our last using silicone sealant, bloody thing always seeped until I did that. The one I fitted this july never leaked at all ... same O-ring, same sender
Ian.
Re: water level switch... sealant?
Posted: 24 Nov 2010, 13:30
by ghost123uk
gaz f wrote:Hi all,
I just changed my header tank as the old one had cracked, problem I now have is the level switch now weeps very slightly around it's rubber seal ring when the system pressurises up. The seal looks to be in good condition so I'm wondering if your supposed to use a sealant when you put the switch in? When I removed it from the old header tank it didn't look to have had sealant on it although I did clean some gunge off of it that may or may not have been sealant.
Was the new one, err, "New" - if so were did it come from ?
The one I got a while ago from JK was pants and after a short while it failed (split).
18 months ago (ish) I fitted a good used VW item = no problems since.
Re: water level switch... sealant?
Posted: 24 Nov 2010, 15:23
by pocolow
Probably best to replace the seal on the temp sender as the old seal will have be compressed over the years and distubing it will have finished it off. As a temperary measure try fliping the seal overand refit it, that sometimes works .
Re: water level switch... sealant?
Posted: 24 Nov 2010, 16:30
by gaz f
ghost123uk wrote:
Was the new one, err, "New" - if so were did it come from ?
Yes it was new and from Gunzel here in Germany so it should be good quality so I'm told.
pocolow wrote:Probably best to replace the seal on the temp sender as the old seal will have be compressed over the years and distubing it will have finished it off. As a temperary measure try fliping the seal overand refit it, that sometimes works .
Good idea! I'll try that before I order a new one.