[jagsfan82]

2004 Santa Fe 2.4

After way too long of a day dealing with the passenger side rotor and pads, I broke the guide pin bolts on the driver side. One came out and I just replaced it, however the bottom one just spins helplessly in both directions. PB Blaster and pliers didn't work. Don't know what else to try. Do I have to cut it off? How would I achieve this with the caliper still on? Very carefully? What's the best tool?

 

[avisitor]

Assuming this is a floating caliper, the bolt screws into the guide pin
The bracket should have a formation which prevents the guide pin from spinning
The guide pin also has something which goes against the bracket to keep it from spinning
Should be able to verify this by looking at the other caliper

Assuming you can buy the brake hardware with guide pins
Should be able to cut the head off the bolt and push the guide pin in to get room to release the caliper
Or cut boot off guide pin and use vise grips to hold pin from spinning
Heat usually helps to release stuck bolts
Don't know if it will help here

If that fails then would consider just replacing caliper with bracket
Two bolts that screw through the bracket to hold it against the backing plate

Good luck

 

[jagsfan82]

Assuming this is a floating caliper, the bolt screws into the guide pin
The bracket should have a formation which prevents the guide pin from spinning
The guide pin also has something which goes against the bracket to keep it from spinning
Should be able to verify this by looking at the other caliper

Assuming you can buy the brake hardware with guide pins
Should be able to cut the head off the bolt and push the guide pin in to get room to release the caliper
Or cut boot off guide pin and use vise grips to hold pin from spinning
Heat usually helps to release stuck bolts
Don't know if it will help here

If that fails then would consider just replacing caliper with bracket
Two bolts that screw through the bracket to hold it against the backing plate

Good luck

Assuming this is a floating caliper, the bolt screws into the guide pin
The bracket should have a formation which prevents the guide pin from spinning
The guide pin also has something which goes against the bracket to keep it from spinning
Should be able to verify this by looking at the other caliper

Assuming you can buy the brake hardware with guide pins
Should be able to cut the head off the bolt and push the guide pin in to get room to release the caliper
Or cut boot off guide pin and use vise grips to hold pin from spinning
Heat usually helps to release stuck bolts
Don't know if it will help here

If that fails then would consider just replacing caliper with bracket
Two bolts that screw through the bracket to hold it against the backing plate

Good luck

The guide pin head is squared off and slides into a slot to prevent it from spinning. I have the new guide pins / bolts.

Going to try cutting that off now...

 

[avisitor]

The guide pin head is squared off and slides into a slot to prevent it from spinning. I have the new guide pins / bolts.

Going to try cutting that off now...

That would have been my last resort
Cuz if I screwed up then it means buying a whole new caliper

Good luck with it

 

[camper]

One thing you can try is vise grip, cut 2 lines on the bolt and try to grip it. If not working, cut the bolt

 

[jagsfan82]

That would have been my last resort
Cuz if I screwed up then it means buying a whole new caliper

Good luck with it

Worked well. I didn't really see any other option.

Thought I was going to have to disconnect the brake line to be able to get the caliper away from the bracket, but I just took the bracket off the rotor and was able to pull the caliper out and rest it on a 5 gallon bucket while I used my new wireless Dremel to work on the bolt head.

Went about as well as could be expected. Cut the head off, but left the "washer" part of the head still hanging on. Used the coarse grind sander attachment to sand through the rest of the bolt head until the outer rim fell off and I was able pull the pin out.

 

[avisitor]

Thanks for the update.

Glad things went well.