Broken thermostat bolt - JeepForum.com
 
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post #1 of 6 Old 02-17-2014, 07:37 PM Thread Starter
jeepmaniac77
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Broken thermostat bolt

I have a 2000 grand cherokee 4.7 and I was loosening the bottom housing bolt of my thermostat snapped some is still sticking out an I have tried all day to get it out. The backside of the timing chain cover where the thermostat sits has an opening where the bolt is. Would it work to punch the bolt out from the backside (I know I'll strip the threads ) and get a longer bolt and use a nut to fasten the housing together?

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post #2 of 6 Old 02-17-2014, 07:55 PM Thread Starter
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Need help soon please!!!!!!!!!!!!!!!!!!!!!!!
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post #3 of 6 Old 02-17-2014, 08:51 PM
laybackman
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Vise grips and lube after some heat.

Or, grind the top of the bolt shaft. Then using a punch put a small divot in the center of the flatten bolt. Use a 1/8" left hand drill bit and drill out the center. That drill bit may make it come out. If not then use an easy out to do so. Lube it well.

Do you know what was good about the good old days? I wasn't good, And I wasn't old!

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post #4 of 6 Old 02-17-2014, 09:12 PM Thread Starter
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I've tried doing that all day it still won't come out, that's why I was thinking of punching it out through the back stripping the threads but using a longer bolt with a nut on back. Would that work?
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post #5 of 6 Old 02-17-2014, 09:52 PM
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Quote:
Originally Posted by jeepmaniac77 View Post
I've tried doing that all day it still won't come out, that's why I was thinking of punching it out through the back stripping the threads but using a longer bolt with a nut on back. Would that work?
How are you gonna hold the nut when it will be under the thermostat!?

Drill it out with a drill that has a diameter smaller than the outer diameter of the bolt. Then chase the threads with a tap.

Do you know what was good about the good old days? I wasn't good, And I wasn't old!

Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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post #6 of 6 Old 02-20-2014, 01:05 PM
oldred95
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All of that or if you have some sticking out , use a stud remover or nut extracter. Good luck on that!
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