Exhaust studs on to-30

Ferguson to-30 · Nov 24, 2019

Need to replace my exhaust studs on my to-30 and was wondering the best way to install the new ones. As far as, how to torque them down so they won t loosen from the head. Do I use any thread lock?

Steve@Advance · Nov 25, 2019

No thread locker, I would use anti seize.

Snug the studs into the head, put the nuts on with anti seize, progressively tighten them working from the center out, tighten in several stages.

Then after the first start up, tighten them again hot.

Ferguson to-30 · Nov 25, 2019

. Understand that, The head does not have a stopping point since the hole goes all the way thru. So, the only stopping contact will be the small shoulder on the stud. I was wondering how much torque to put on the stud to secure it to the head. My thinking was if the stud did not stay tight in the head then when you remove the nut the stud and nut will back out together. I an using the metal self locking nut instead of a plain nut and lock washer. Thoughts?

Steve@Advance · Nov 25, 2019

That's right, I forgot they do go through into the water jacket.

In that case I would clean the threads with carb cleaner, seal the threads with hi-temp automotive silicone, double nut the stud and snug it against the shoulder.

It doesn't need to be real tight, don't want to damage the top thread. Just tight enough to hold it in place.

Dieseltech · Nov 27, 2019

DON'T use the self locking nuts, they aren't needed. I'd use sealer for the head end threads, and never seize on the nut end. Use brass nuts if you like, but steel works well too. The brass nuts are less likely to stick on the studs like steel can over time.

Ferguson to-30 · Nov 27, 2019

(quoted from post at 17:36:45 11/27/19) DON'T use the self locking nuts, they aren't needed. I'd use sealer for the head end threads, and never seize on the nut end. Use brass nuts if you like, but steel works well too. The brass nuts are less likely to stick on the studs like steel can over time.

Why do you say no self locking nuts? I was thinking of using them so there will not be the chance of them backing off. I was going to use the sealer on the part that goes into the head and anti-seize on the nut side.

Ferguson to-30 · Nov 27, 2019

. Also, I found some Permatex thread sealer and thought about putting a small dab of thread locker on the first inner thread. Reason- the threads on the head are clean and with new studs I can screw the studs all the way down by my fingers. I just don t want any studs backing out later.

Dieseltech · Nov 27, 2019

Because they aren't needed, were never used when new. Re-torque the hardware when hot and it will be just fine.

Ferguson to-30 · Nov 27, 2019

. Thank you for the help. I am pretty new with this tractor stuff so forgive me if I ask crazy questions. I m sure I ll have more questions as I keep tearing into this project. Thanks again

Exhaust studs on to-30

Ferguson to-30

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