Best way to remove bolts with lock tight ?

[alan0043]

Hi Everyone,

 

I need to remove some more bolts from the cab of my truck. The bolts have a lot of thread locker on them. I now that heat works the best to get the bolts loose. What temperature is needed ? Can a propane touch give me enough heat ? Is there another way to get the bolts loose with out heat ? I am asking this question because of the rubber mat that is in the cab. The nuts are under the cab that holds the seat belts in place. I don't want to see a fire start or the mat melt because of the heat.

 

Open for ideas,

Al

[Pat & Pete]

In my experience , heat is the best and quickest way to deal with thread locker .

 

I don't use propane any more , in favor of MAPP gas . It comes in one pound bottles , just like propane . Use the same hardware as propane bottles . Costs a bit more , but you get a lot more heat in less time . Yellow bottles , generally sold right next to the blue propane bottles .

[HWSmith]

I parked next to a guy who used his wife's hair blower. It took awhile but worked. I think a heat gun would be safer. Good luck.

[Imurphy907]

Direct from Locktite

 

For RED Locktite "For disassembly: Heat parts up to 482°F (250°C) and separate parts while hot."

 

for BLUE Locktite "Shear with hand tools"

 

But I have found a bit of heat helps blue too.

[bigredhdt]

The mini-doctor uses high frequency magnetic induction to heat the bolt. So no open flame much safer. They are pricey though.

[bigredhdt]

Mini-ductor. Not doctor. Dang spell check.

[alan0043]

Direct from Locktite

 

For RED Locktite "For disassembly: Heat parts up to 482°F (250°C) and separate parts while hot."

 

for BLUE Locktite "Shear with hand tools"

 

But I have found a bit of heat helps blue too.

 

Thanks Imurphy for the info.

 

Knowing the temperature is going to be a big help. Nice knowing that you don't have to get the nut red hot. 500*F will work just fine. I can use my temperature gun to measurer how close to the temperature that I need.

 

Al

[Sehc]

I keep the flame directly on the bolt, trying not to heat the surround. Some torch kits will not work with MAPP gas, and the gas can damage the stuff in them.

[alan0043]

Hi Everyone,

 

Some news to report. With the help of my neighbor I was able to remove the last three bolts. I was under the cab with a propane touch and my neighbor was inside the cab. I kept heat on the nut till my neighbor could feel the head of the bolt heat up. He was using a ratchet to brake the bolts loose. We had a beaker bar handy, but it was not needed. I also had an infrared thermometer with me under the truck. It looked like the temperature measured was about 400*F. We also had a small bucket of water with a damp rag in the cab, just incase it was needed. Definitely a two man job.

 

Al