Radiator bottom bolster

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Brodalick
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Radiator bottom bolster

Postby Brodalick » Thu Apr 05, 2018 7:00 pm

Having trouble with the bottom bolt that holds the radiator bolster to the motor. I put an impact wrench with very little pressure on it hoping the hammering vibrations would break it free. No luck. I realize it's a big bolt but I'm afraid it may break off. Do I need to apply heat to it or just use a cheater bar?
Last edited by Brodalick on Thu Apr 05, 2018 7:17 pm, edited 1 time in total.

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Shane Nelson
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Re: Radiator bottom bolster

Postby Shane Nelson » Thu Apr 05, 2018 7:15 pm

I’d heat it.
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Re: Radiator bottom bolster

Postby jsfarmall » Thu Apr 05, 2018 7:45 pm

Yeah heat it. If anything heat and let it cool a couple times but when you try to take the bolt out make sure it's hot. You for sure don't wanna break that bolt off.

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John *.?-!.* cub owner
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Re: Radiator bottom bolster

Postby John *.?-!.* cub owner » Fri Apr 06, 2018 2:44 pm

Considering how much cast iron that bolt is into it is going to be difficult getting heat very far down it. Unless you are using a large 3/4 or 1 inch impact, you can rattle it pretty hard with a 1/2 impact, try going backward and forward. Also make sure you have everything supported so there is no pressure on the bolt, that makes them much harder to remove.
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Re: Radiator bottom bolster

Postby Brodalick » Fri Apr 06, 2018 3:11 pm

John , it's the first one im going to remove. All the rest are still in place and tight. Do I still need to take pressure off the front end?

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Re: Radiator bottom bolster

Postby Eugene » Fri Apr 06, 2018 4:47 pm

Brodalick wrote:Do I still need to take pressure off the front end?
Search function for jack stands that bolt to or support the torque tube. There are quite a number of different suggestions.

I use a shop crane/cherry picker to pick up the tractor front end. I have a set of stands that with a 2 X 4 on endge holds up the torque tube so that the front tires are about 1/4" off the ground.
I have an excuse. CRS.

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Re: Radiator bottom bolster

Postby Indy4570 » Fri Apr 06, 2018 5:48 pm

I like to heat the bolt up very red hot then let it cool all the way down. if I can melt some beeswax in the threads i will, the heat is to expand the bolt and compress the corrosion locking it up, by letting it cool my mind tells me its now contracted and smaller. they make a freezing spry to spray on a bolt to contract it further. Are we talking about a blind hole bolt or one with with a nut on the back side? I have had good luck with beeswax. You can use percussion and PB blaster as well, others swear by ATF mixed with acetone as the best penetrating oil there is.

The best thing you can have with a stuck bolt is patience. A buddy used a 4 ft cheater and broke my vise for me trying to help out :( Just because heat didn't work the first time doesn't mean it wont the second. GOOD LUCK!
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Re: Radiator bottom bolster

Postby areger23 » Fri Apr 06, 2018 5:56 pm

if you are afraid to heat the bolts. use a 50/50 mixture of brake fluid and acetone as a penetrating oil. it works wonders

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Re: Radiator bottom bolster

Postby Brodalick » Fri Apr 06, 2018 7:25 pm

After an hour of PB Blaster, heat, 1/2 impact with forward/reverse hammering, it finally have up and came out. Never knew 70 years of corrosion could be so stubborn.

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Re: Radiator bottom bolster

Postby John *.?-!.* cub owner » Fri Apr 06, 2018 8:40 pm

you can loosen that one without supporting it, but when you get to the last ones the front of the tractor will have to be supported, or you will be ding more repairs than you planned
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