Leak from water pump bolt - Defender Source
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  #1  
Old July 6th, 2014, 05:17 PM
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Leak from water pump bolt

I just installed a new water pump (long story). When taking off the long bolts (6 inch) that go through to the block I had trouble getting one in particular out. (The one next to the tensioner for the fan.) I had even more trouble reinstalling, but I cleaned the treads up and it felt tight during installation.

Got everything back together, started it up, and after 10 minutes running it started leaking out of that hole. (Around the bolt).

Anyone have an easy solution?

I know I could take it all apart again, helicoil it and buy a new water pump bolt. However, this engine has 250k, been rebuilt 3x and im milking it along for now. For now, I'm ok with cheap and easy.

Do you think adding some JB weld in there would do it? More rvt gasket material in the bolt hole?

...looking for options. Thanks.
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  #2  
Old July 6th, 2014, 05:20 PM
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A picture... if it helps.
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  #3  
Old July 6th, 2014, 09:55 PM
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Water should not reach the bolt. Check following:
Both contact surface should be completely clean and scratch free
Use a quality gasket
I spray some lithium grease on the gasket (lightly) before assembling, but that's me
Torque you bolts gradually, do it in 3 steps, just in case.

If it's still leaking, check for cracks.

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  #4  
Old July 6th, 2014, 11:53 PM
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Thank you. That makes sense. I assumed the longer bolts were in contact the water/antifreeze.
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Old July 7th, 2014, 08:57 AM
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Quote:
Originally Posted by Streaky View Post
Thank you. That makes sense. I assumed the longer bolts were in contact the water/antifreeze.
get another bolt ... cut it vertically through the thread with a hacksaw ... use that to clean out the hole properly ... otherwise you are just compressing crap into the hole
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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Old July 7th, 2014, 09:01 AM
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Quote:
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get another bolt ... cut it vertically through the thread with a hacksaw ... use that to clean out the hole properly ... otherwise you are just compressing crap into the hole
^this^...or spray the crap out of it with brake cleaner and use a qtip...turning it counter clock wise. You wouldn't believe the crap in there.
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Old July 7th, 2014, 09:03 AM
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^this^...or spray the crap out of it with brake cleaner and use a qtip...turning it counter clock wise. You wouldn't believe the crap in there.
You have 6" plus q-tips?
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #8  
Old July 7th, 2014, 09:08 AM
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You have 6" plus q-tips?
duh...doesn't everyone?


http://www.walmart.com/ip/Medline-6-...count/21854466


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Old July 7th, 2014, 09:09 AM
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You have 6" plus q-tips?
he must be an obstetrician
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Old July 7th, 2014, 09:21 AM
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Originally Posted by leastonce View Post
get another bolt ... cut it vertically through the thread with a hacksaw ... use that to clean out the hole properly ... otherwise you are just compressing crap into the hole
I do it but with a rotary tool (dremel or similar) it's way easier. I pack 2 or 3 cutting discs to have a decent cut width and make 3 of them on an old bolt, works like a charm. That + brake cleaner will leave hole pristine.

Cheers
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