View Full Version : Thermostat Housing
avanti
10-31-2001, 12:12 PM
I would like to know if when you install the senders in the thermostat housing on a Merc 350 Mag do you use teflon tape on the threads or do you use pipe thread sealer or nothing at all. I understand that these senders have to be able to ground.
Bryan Tuvell 33ZX
10-31-2001, 01:20 PM
When mine was replaced he just wiped out the fitting and screwed it in! Nothing on the threads.
Bryan
RickR
10-31-2001, 01:21 PM
The manuals say not to use tape or sealant with a brass fitting. But I always use a little tape and have never had a problem.
BigGrizzly
10-31-2001, 10:59 PM
I do the same as Rick. It still makes ground.
Randy
avanti
11-01-2001, 08:15 AM
Thanks guys for the advice. If you use a little tape how many wraps is that on the sender? Also the SS bolts that hold the thermostat housing to the manifold seem to constantly work themselves loose and cause a small leak of coolant, what do you do for this problem?
RickR
11-01-2001, 09:16 AM
On brass I use one wrap.
If the bolts work loose try a stainless lock washer or some Loctite (blue)
At the risk of asking a dumb question here it goes. Are the sensors like most parts, if their not broken don't touch them. Or, should you replace them once in a while. I just replaced my thermostat during my winter layup process and thought about replacing the sensors but didn't.
Sam
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