67_Rmodel_sta237 Posted April 9, 2022 Share Posted April 9, 2022 Question, has anyone ever changed the lower radiator gasket on a MR before? We changed our 1995 due to it leaking. Changed it with a new cork gasket from Mack, everything was good and it lasted a few days and it just started leaking from the sides again. Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/ Share on other sites More sharing options...
Joey Mack Posted April 9, 2022 Share Posted April 9, 2022 did you remove the radiator? I have only done a few, but they were out of the truck, yes I had to remove a bunch of stuff including the front mounted PTO, but when it was done I didnt have to re-do the workand I was able to check condition and to see if it was straight, and then of course the prep work is the most important step.. I have no magic words, just that... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/#findComment-494854 Share on other sites More sharing options...
67_Rmodel_sta237 Posted April 10, 2022 Author Share Posted April 10, 2022 No sir we changed the gasket with the radiator still in the truck. That was the only thing wet and place that coolant was coming from. 2 hours ago, Joey Mack said: did you remove the radiator? I have only done a few, but they were out of the truck, yes I had to remove a bunch of stuff including the front mounted PTO, but when it was done I didnt have to re-do the workand I was able to check condition and to see if it was straight, and then of course the prep work is the most important step.. I have no magic words, just that... jojo So the more I'm thinking here the worst is it possibly a headgastet? Did the system over pressurize and push the gasket out? The radiator cap looks factory but if it did over pressurize why wouldn't it of pushed out the cap? Sorry for rambling but just trying to think of a few possibilities. We are 100% volunteer, 100% self funded, with quite a few mechanically inclined people within our department. So we'd love to fix this in house before sending it the a shop. Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/#findComment-494869 Share on other sites More sharing options...
Joey Mack Posted April 10, 2022 Share Posted April 10, 2022 do you have the coolant resvoir that is up on the stantion? if so, its good,, you can get one of those low cost funnels for filling radiators and it attaches to the tank like the cap, then you can fill the coolant up into the funnel, and run the engine and watch for bubbles in the coolant that is in the funnel.. Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/#findComment-494870 Share on other sites More sharing options...
67_Rmodel_sta237 Posted April 11, 2022 Author Share Posted April 11, 2022 Looks like it ended up being the radiator. Now we're on the hunt for a new one. Thanks for the info so far. Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/#findComment-494947 Share on other sites More sharing options...
mowerman Posted April 11, 2022 Share Posted April 11, 2022 I would be certain before you go to all that expense… good luck.. bob Quote Link to comment https://www.bigmacktrucks.com/topic/69510-lower-radiator-gasket-issue/#findComment-494967 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.