Heater hose coupler on the T-Stat... how to remove?

[billschroeder5842]

I've just noted a super small leak coming from one of the heater hoses that connects to the top of the the T-Stat housing. The leak is at the connection area. When I say small, the drip on the ground is about a dime size per day after a run. The leak runs down to the T-Stat then onto the frame then the ground. I've been wiping it with a shop rag.

My question is how does the coupler come apart on the T-Stat housing? It looks like something I've never seen? Also, it look likes the whole hose needs to be replaced all the way back to the fire wall? I just (like a month ago) did a radiator swap and new hoses from Jerry's. FML as there seems to be almost no room to get at this thing!

Although my OCD is on over drive I'm tempted (for a while) to leave it and keep an eye on it. Funny, I had a small lower radiator hose leak on my 82 that did not nearly bug me like this-- and the ZR1 leak is smaller!

Thanks!

[GOLDCYLON]

Originally Posted by billschroeder5842

I've just noted a super small leak coming from one of the heater hoses that connects to the top of the the T-Stat housing. The leak is at the connection area. When I say small, the drip on the ground is about a dime size per day after a run. The leak runs down to the T-Stat then onto the frame then the ground. I've been wiping it with a shop rag.

My question is how does the coupler come apart on the T-Stat housing? It looks like something I've never seen? Also, it look likes the whole hose needs to be replaced all the way back to the fire wall? I just (like a month ago) did a radiator swap and new hoses from Jerry's. FML as there seems to be almost no room to get at this thing!

Although my OCD is on over drive I'm tempted (for a while) to leave it and keep an eye on it. Funny, I had a small lower radiator hose leak on my 82 that did not nearly bug me like this-- and the ZR1 leak is smaller!

Thanks!

Is the leaking coming from the thermostat housing heater nipple?


http://www.jerrysgaskets.com/nipple-...urn-90-95-7c4/

[billschroeder5842]

Thanks- the leak appears to be coming from the coupler and not the T-Stat.

I called Jerry and (he is always helpful) said that my hose was probably OK and that the O ring in the T-Stat is probably going bad due to corrosion. Jerry said that the thermostat assembly should be removed and benched for proper cleaning before installation.

What is the trick to remove the hose(s) from the assembly? There is a little gizmo that seems to hold the hose in place through some recess?

[secondchance]

Looks like my heater hose connection is giving up the ghost after 24 years and 164,000 miles. I just ordered a new and improved, Jerry manufactured heater hose fitting.
Are black plastic tabs spread outwards to release the heater hose? Any special trick? Any suggestion in removing the fitting from the housing? I would really prefer not to bungle this. Know what I mean?

[Dynomite]

Originally Posted by secondchance

Looks like my heater hose connection is giving up the ghost after 24 years and 164,000 miles. I just ordered a new and improved, Jerry manufactured heater hose fitting.
Are black plastic tabs spread outwards to release the heater hose? Any special trick? Any suggestion in removing the fitting from the housing? I would really prefer not to bungle this. Know what I mean?

I did my Heater Hose and was easy to figure out after I received Jerry's new Heater Hose Connector.
The Heater Hose Connector is threaded into the Thermostat Housing.
As I recall.....I separated the Hose from the Connector and cleaned up the Hose end that fits into the New Connector from Jerry. I think I separated the Thermostat Housing removing all coolant hoses lifting thermostat housing top side.





See Item #3...…….
Post 135 - Replacing the Heater Core and Heater Hose Connection

[secondchance]

And a seal is in the fitting? And not on the hose end?

[Dynomite]

Originally Posted by secondchance

And a seal is in the fitting? And not on the hose end?

I do not recall any seal on hose end but do recall it was a bit difficult to separate. That is why I brought the assembly too top side with that heater hose connected.

[billschroeder5842]

This repair (done almost a year ago) was a royal PITA. The coupling was not the problem but the little "pot metal" nipple fused to the housing. I cried uncle and took it to my trusted shop where they had to remove the entire unit and ended up breaking off the housing with the threads stuck inside. They had to carefully-thread by thread- grind it out with a dremmel so as not to screw up the housing. Assembly was easy (for them!) and no leaks since.

[secondchance]

Upon close inspection, it seems heater return hose with make fitting (that connects to Jerry supplied fitting to thermostat housing) is leaking. Anyone know where I can find this hose with male fitting? Looks like the fitting is crimped on.

[Marc Haibeck]

Yun,

You might find it here. Paste this link into a browser.

http://www.daycoproducts.com/stuff/c...51915small.pdf

Items on pages 26 and 27 look interesting.