Any suggestions on how to get this bolt out

[CurrentObsession]

Top of a1998 Alpha1 gen 2 drive.

I have been able to get it about 1/4 way out but it feels like it is going to sheer off if I give it anymore leverage. I have shot it with some PB blaster several times, screwed it back in a few turns then back out, even heated the housing around the bolt with a plumbing torch. Any other ideas out there?

 

[Scott Danforth]

50/50 mixture of acetone and ATF. heat it to about 200F. then pour over the bolt.....and wait an hour.

if that doesnt work, you may be forced to drill out once you break it off.

 

[Rick Stephens]

You want to heat the bolt, not the housing. Getting the bolt hot expands it, then when it cools it shrinks back down looser. Heating the housing just makes the fit tighter and with SS into aluminum, can gall and smear the aluminum onto the stainless threads.

 

[Bondo]

and with SS into aluminum, can gall and smear the aluminum onto the stainless threads.

Ayuh,.... My guess is,.... That's already happened,....

Heat the bolt, Hot, 'n quench it with cold water, then pen.oil, 'n try turnin' it,...
Repeat as necessary,...

You'll probably have to heli-coil the hole after,...

 

[CurrentObsession]

okay

Thanks

 

[devildogae]

Sit it upright and soak it with the PB Blaster or the 50/50 mix (Acetone with evaporate if sitting out to long), get some modeling clay or plastic / tape and make a cup around the bolt to get the fluid to sit for a long period of time, so it can work it's way down (overnight). Then go at it again with heat and working in and out, be patient and it will come out.

 

[CurrentObsession]

Got it out....

​PB blaster and a lot of patients going back and forth.

​Many thanks

 

[Rick Stephens]

Got it out, what do the threads in the housing look like?

 

[CurrentObsession]

Got it out, what do the threads in the housing look like?

​Didn't look inside. I was surprised at how clean the bolt was though.

I assume I can just run a tapper thru it to clean it up?

 

[Rick Stephens]

Surely might be able to run a tap in and see good threads. Check em carefully. Not an uncommon place for them to get striped out.