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While changing Thermostat, lower Bolt sheered off ! Need best fix.

Tiny
RAYPENCOSKY
  • MEMBER
  • 2004 JEEP LIBERTY
  • 53,000 MILES
Hi, Top bolt on thermostat housing came out easily. Lower bolt snapped off after 1 turn! Flush with thermostat housing. Need advice on best way to get remaining piece of bolt out? Bolt is steel, housing alluminum. I'm a skilled Body Repairman.24 yrs. Not alot of room to get at this. I'm really scared to try drilling and taping this broken bolt out, but know no other way? Any ideas? P.S. This is a really stupid set-up, 8mm bolts right above the steering rack HELP Please.
Thanks, Ray
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Tuesday, September 4th, 2012 AT 10:29 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Drilling is about the only way to do it. Try heating the bolt up after you get it drilled. If it screws into aluminum you have a good chance of pulling the threads out of it.
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Tuesday, September 4th, 2012 AT 10:45 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Hmac300

THINK USING AN DRILLING, THEN HEATING THE ALUMINUM A FEW MOMENTS WITH A PROPANE OR PLUMBERS "TURBO TORCH" (PROVIDED NOTHING NEARBY COULD BE HURT WITH HEAT), AND THEN USING AN EZ-OUT WOULD DO IT?

THEN THERE, S ALSO THE "FORGET THE HEAT"---FREEZE THE BOLT TO SHRINK IT INSIDE THE ALUMINUM, THEN TRY THE EZ-OUT

I'LL LET YOU BE THE JUDGE OF THIS WORKING FOR HIM OR NOT

THE MEDIC
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Wednesday, September 5th, 2012 AT 3:05 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
. AND?

THE MEDIC
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Friday, September 7th, 2012 AT 2:49 PM

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