Did you clean out the housing and cover? You said no gasket was in the one you pulled out, so I'm assuming they used rtv. If there is still any rtv left behind it might be causing interference.
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Ooh, i did see some kind of material around the opening of the water inlet. I didn’t think much of it at the time but I can see if it’ll scrape off. Thanks for the tip.Did you clean out the housing and cover? You said no gasket was in the one you pulled out, so I'm assuming they used rtv. If there is still any rtv left behind it might be causing interference.
Ooh, i did see some kind of material around the opening of the water inlet. I didn’t think much of it at the time but I can see if it’ll scrape off. Thanks for the tip.
i did that the second go round but it was stilll mostly antifreeze I ended up dumping out. Then I noticed the slow leak later.If you're still not confident you've got it sealed on the next try, fill with water only.
Once you know it's sealed, dump water and add your coolant
The oring I had might be damaged beyond repair at this point. Maybe I can just reuse the RTV stuff that was in there? The OEM oring seems surprisingly hard to get ahold of for such a simple part.apply a generous amount of simple high quality red or blue transparent wheel bearing grease to the rubber black o ring
it will aid in the whole seating and clamping of the NEW oem black ring your getting
I did order a new o-ring from the dealer. I was able to confirm AISIN THT-015 was the right thermostat in the thread above, so I think I'm ok there; it might just need a little more encouragement to get in the housing.Get right OEM stuff at the dealership. They still sell it. Should eliminate whether you have the right parts or not. Share your vin # with them.
i did that the second go round but it was stilll mostly antifreeze I ended up dumping out. Then I noticed the slow leak later.
The oring I had might be damaged beyond repair at this point. Maybe I can just reuse the RTV stuff that was in there? The OEM oring seems surprisingly hard to get ahold of for such a simple part.
I don’t have any grease handy, is there anything else you’d recommend as a good lubricant to get it in the housing?NO RTV !
i mentioned the grease topic and referred to using a NEW OEM O-RING also ...fyi see above again
please TRUST my prescribed approach step by steps
if you decide to take the easy path to the DARK SIDE ?
you will fail and have more leaks bottom line
the oem O-ring is less $ then a cup of coffee !
Remember : YOU CAN DO THIS by the FSM correctly , don't ever sell your self short , never , everyone here on MUD knows u can make this repair perfect too !
View attachment 3052523
I don’t have any grease handy, is there anything else you’d recommend as a good lubricant to get it in the housing?
Cool, now I have to drain the radiator again without making a mess, and I guess I’ll have to scrape out the old RTV stuff also.get your JAR of VASOLINE " BRAND " PETEROLUM JELLY i know u have , and use that generously .......
it works out wonders and will make this solid 100% in like flin correct with a NEW OEM O-RING ONLY too
you can do this !
View attachment 3052531
You get a 5 gallon bucket. You place it under the lower radiator hose and pull that sucker off and it will drain in the bucket. Leave the cap on the slow it down if you want. You can further improve your method by placing a trash bag in the bucket and wrapping the mouth of the bag around the hose and radiator outlet when you pull them apart. Very fast drain method!Cool, now I have to drain the radiator again without making a mess, and I guess I’ll have to scrape out the old RTV stuff also.
I was gonna try to drain from the petcock with a 5/8” hose to avoid it dribbling all over the cross member.
I was just scared of tearing a hose as I’m trying to get it off. I replaced all the heater hoses but the rad hoses Im unsure of how old they are.You get a 5 gallon bucket. You place it under the lower radiator hose and pull that sucker off and it will drain in the bucket. Leave the cap on the slow it down if you want. You can further improve your method by placing a trash bag in the bucket and wrapping the mouth of the bag around the hose and radiator outlet when you pull them apart. Very fast drain method!
@Ozark80 you need to get your hands on silicone dielectric grease. It has any uses it can be bought at any parts store, Walmart and even some grocery stores.
The gasket was easy to fit around the flange of the tstat; the issue is I was having a hard time getting the tstat into the housing with the gasket attached.Gasket should not be difficult to place around thermostat. If you are fighting it, not good.
I put the or O-ring around the disc part of the tstat but couldn’t fit it snug back in the housing this way. When I started to refill it started leaking out the bottom of the housing, where part of the oring was sticking out.
Is the oring supposed to be installed this way, and/or is it really necessary at all? The old tstat didn’t have one I don’t think.
I’d appreciate any help getting this to seal.
Thanks
View attachment 3050709
i personally would use the BLOCK drain for this particular situation , it lower then the thermostat housing too
attach the 5/16 clear hose to spout on block drain into bucket NO ZERO coolant loss on the ground or on you either
View attachment 3052547
Nothing but he is probably out of it for "personal" reasons as a result of frustration acquired by working on his 80.whats wrong with PURE Petroleum Jelly ?