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Discussion Topic:
water pump hidden bolt
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1937sedandelivery |
08-23-2017 @ 3:50 PM
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Senior
Posts: 501
Joined: Jul 2014
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Hello, I am scr*w*d. The "hidden" bolt on my 37 85HP water pump is not budging. I applied WD40, heated it up and firmly planted a 7/16 six sided socket on it. The bolt does not loosen up. The socket just slips and starts to round off the head. Help! Any suggestions? Certainly I am not the first to run into this problem. Personally, I think this bolt arrangement was a very poor design from Mr. Ford. Thanks, gregg
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MG |
08-23-2017 @ 4:07 PM
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Senior
Posts: 1254
Joined: Nov 2009
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Is the engine out of the car? With all the other bolts removed, try to use the pump as a lever - that is, swivel the pump using that stuck bolt as a pivot point. Use a pry bar...
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4dFordSC |
08-23-2017 @ 4:19 PM
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Member
Posts: 266
Joined: Oct 2009
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When you finally get it out, replace it with a stainless steel bolt.
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MGG |
08-23-2017 @ 6:08 PM
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Member
Posts: 85
Joined: Jul 2014
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My pumps are held in by 9/16 inch headed bolts. I used a metric 14mm six-sided impact socket because it fits more snuggly on the 9/16 head. Try some real penetrating oil for a few days instead of the WD-40. It worked for me.
This message was edited by MGG on 8-23-17 @ 8:31 PM
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1937sedandelivery |
08-23-2017 @ 6:37 PM
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Senior
Posts: 501
Joined: Jul 2014
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The engine is in the car. I have removed the other bolts and knocked it loose from the engine. It does swivel just a bit. Haven't tried prying on it and swiveling. Will also get the socket on the bolt and try it all together. Stainless steel replacement will be good. Maybe a grade 8 bolt is also more resistant to corrosion and will hold its bolt head a bit better??? Bolt head sizes are all over the map on this. The passenger side pump had two 9/16 bolts, one 1/2 inch on the outside and the hidden bolt was 1/2. The driver's side pump had three 9/16 bolts on the outside. The hidden bolt may have originally been 1/2 but a 1/2 socket freely spun around it. The 7/16 grabbed the bolt pretty good but it still slipped. I tried a 3/8 socket but it was way too small. Will see what metric sockets I have. That would be cool if one of them fits really tight. If none of this works, I guess I will drill out the existing bolt head, enough to get the pump off and then try some vise grips or ??. If still no luck, will drill the d@mn thing out very carefully to and see what is left. Worst case, will have to drill it out more and tap it to the next larger size. What a pain... but no one said this was going to be easy...thus goes the restoration process. hmm, also thought about welding a fresh bolt head to the stub somehow and then try backing it out, will see. Thanks guys, gregg
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fordv8j |
08-23-2017 @ 7:01 PM
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New Member
Posts: 176
Joined: Jan 2015
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brake fluid is good to loosen a stuck bolt
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MGG |
08-23-2017 @ 8:37 PM
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Member
Posts: 85
Joined: Jul 2014
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I did not use stainless steel bolts because some of them tend to stretch. I went with a grade 8 bolt and placed Never-Sieze on the threads.
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alanwoodieman |
08-24-2017 @ 5:35 AM
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Senior
Posts: 868
Joined: Oct 2009
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go to the local tool store and buy a set of sockets with the reverse twist-designed to catch on rusty bolt heads-bough my set at sears years ago--great tool to have
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1937sedandelivery |
08-24-2017 @ 7:44 AM
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Senior
Posts: 501
Joined: Jul 2014
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Good stuff, Thanks guys, gregg
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TomO |
08-24-2017 @ 7:52 AM
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Senior
Posts: 7252
Joined: Oct 2009
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An impact wrench works better on rusty bolts than a regular socket and breaker bar. The hammer effect helps to break loose the rust and free the bolt. You can use the impact wrench with good quality sockets, but be sure to wear safety glasses when you do and use short bursts of the tool.
Tom
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