Water Pump Plug Tip
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Water Pump Plug Tip
Put in a new water pump yesterday. All went well except when I went to remove the plug to put in my ISSPRO coolant temp sender. The plug in the water pump had a 5/16" square drive. 
I have read that some have run across this before (my last water pump had an allen head plug) and had to use a piece of 5/16" square stock to get that plug out. I didn't have any 5/16" square stock so I was going to grind down a short 3/8" extension but then I found that the square end of a nail punch is a perfect fit. 
I have read that some have run across this before (my last water pump had an allen head plug) and had to use a piece of 5/16" square stock to get that plug out. I didn't have any 5/16" square stock so I was going to grind down a short 3/8" extension but then I found that the square end of a nail punch is a perfect fit.
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Lead Driver
Joined: Jan 2007
Posts: 6,708
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From: Kiowa CO
These are the things that drive me nuts when working on my truck. Just when you think you have all the necessary tools and supplies to do a certain job, something like an odd-ball fitting makes you scramble for a solution. Thanks for the heads-up, Robin.
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From: East Peoria, IL
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Post Fiend
Joined: Jun 2006
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From: White Mnt's,New Hampshire
square drive and torques are very handy to have..i have both from a screw driver size all the way up in my box...
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Thanks Guys.
Sometimes we have to improvise. I wasn't going to drive to town to get something I probably will never need again. Hell, I've got 3 nail punches that can double as 5/16" drive.
Sometimes we have to improvise. I wasn't going to drive to town to get something I probably will never need again. Hell, I've got 3 nail punches that can double as 5/16" drive.
Postmaster
Joined: Jan 2009
Posts: 2,544
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From: Suffolk, VA
Always good to have the right tools, but no way was I going to spend that kind of money for a 1 time deal. Much cheaper to grind down a cheap chinese extension. But the nail set is even better idea.