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Small Air Cooled Gasoline Engines

Briggs and stratton with Gorman Rupp pump


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  #1  
Old 02-25-2015, 08:28:46 PM
uglyblue66 uglyblue66 is offline
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Default Briggs and stratton with Gorman Rupp pump

What do I need to do to unscrew this impeller? I had it off 14+ years ago.But I can not remember for the life of me how I got it off.
This is the pump that we used to irigate the garden with and it has never been anything but trouble engine wise. Last couple years we did without it. Gas tank of course is messed up now and so forth.I have enough peices and parts in the pile that whatever is wrong I should be able to fix it . I need to get this going again so I can water stuff if we have yet another dry summer. I am putting to much work into the garden to loose stuff to drought if I can help it.
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  #2  
Old 02-25-2015, 09:09:09 PM
Pat Barrett Pat Barrett is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Every one I've seen is threaded, and right handed. The sharp part of the vane is what you need to strike. I'd try a piece of lead, lead hammer, wood. You're going to have to spray some good penetrant on the carnk part of the impeller and hope all works. They can be TOUGH to get off.
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  #3  
Old 02-25-2015, 10:49:50 PM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Thanks,I had hoped I had enough sense to put antiseize on it when I had it apart years ago but I dont know. I may heat it a bit to when I work on it. Will be plenty of time to work on it thursday. We are getting about 6+ inches of snow tonight.

Many years ago there was a fellow selling lead hammers at a tractor show and I bought 1. Didnt use it for years. It just laid around. Then 1 day i needed to wack something and not ruin it. Lead hammer. Now that poor thing looks like a cauliflower.
Need to get another 1 I guess.
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Old 02-26-2015, 02:36:22 AM
Fifty7ChevyNut Fifty7ChevyNut is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

you do not want to heat it unless you also plan on replacing the oil seal on the crank shaft.
crank the engine over, and that is same as tightening the impeller on the shaft if you were holding it.
hit it a couple days with PB blaser, and then tap each fin of the impeller in turn. dont try ti get it to completely break loose the first day.
the TAPPING over a period of days will shock it, allowing the oil in further. but then again, if you anti-seized it, it may just break loose. they are not supposed to be on that tight. everytime the engine is cranked it tightens, and water resistance keeps it tight.
good luck
don
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Old 02-26-2015, 11:12:20 PM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Well with a couple taps of the lead hammer she came right loose.
But I have ruined the thing.
It was leaking really bad as far as water on the crankshaft side.
I thought it was a bronze bushing but when I tapped it to knock it out it was Porcelain!
So I guess it is shot unless I can find a part.I had no idea they would put that there.There was alot of slop between the "sleeve " that goes over the crankshaft and what I thought was a bushing.
Apparently they were depending on the rubber rubbing the porcelain to seal it?

Me and this pump have had a round before.That cost me 63 bucks for a new crank.I tried to rebuild the engine 14 years ago and the end of the crank snapped off. Now this time the pump is screwed up from human error.
I dont have a clue where to start looking for parts.
Gorman-Rupp 317986 82k38 model
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  #6  
Old 02-26-2015, 11:29:23 PM
slip knot slip knot is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Thats probably the pump seal. they are made of ceramic and its very brittle. GR is still in buisness and that seal is probably still available. Find out who is your local GR pump rep and give them a call. I'd almost bet money your parts still available.
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Old 02-27-2015, 12:25:12 AM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Well I googled it and there is a distributar about 60 miles from here.
Gra-Mac Distributing Company
2310 NC Hwy. 801N
Mocksville, NC 27028
Office: (336) 998-3232
What would the name for this part be? So I wont sound like a idiot when I call and ask..
It will be after lunch before I get a chance to call. So I will check back here first.
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Old 02-28-2015, 12:44:44 AM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Well I called and it appears I will need to make a 200 mile round trip to go see these folks so they can look at it first hand. I gave them the numbers but didnt seem to help anything.
I wonder if I ought to post a want add for another pump I can bolt on the engine? this could get pricy and the impeller is worn a good bit to.
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Old 02-28-2015, 10:27:25 AM
Heins Heins is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

The ceramic part of the seal sits in rubber which sits in the bore of the pump housing and a spring loaded carbon seal rides again the ceramic part. The parts of the seal aren't hard to find if the bore in your pump housing is OK. I may have a ceramic part if you can't find one.
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Old 02-28-2015, 10:44:05 AM
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Steve Kreiner Steve Kreiner is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Quote:
Originally Posted by uglyblue66 View Post
Well I called and it appears I will need to make a 200 mile round trip to go see these folks so they can look at it first hand. I gave them the numbers but didnt seem to help anything.
I wonder if I ought to post a want add for another pump I can bolt on the engine? this could get pricy and the impeller is worn a good bit to.
Can you e-mail them pictures to have a look at what they are looking for?
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Old 02-28-2015, 10:49:25 PM
Ken Karrow Ken Karrow is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Before you make that trip try some pump repair or water system dealers a little closer first. Most of those seals were fairly standard. I don't know about Garman-Rupp though.
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Old 02-28-2015, 11:26:39 PM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

I ask about emailing photos but they did not have that option.
So it is not a hard rubber seal that rubs the ceramic? Hum, I have been wrong about the whole thing! My knowledge of water pumps was all but zilch till I worked on this 1 and so far all knowledge is learned the hard way.
I will carry these parts to a couple local places and get some input to.Thanks for the tips.
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Old 03-01-2015, 02:27:14 PM
Heins Heins is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Here is a picture of a mechanical seal. The one on the left is for a 3/4" shaft and the one on the right is for a 1 3/4" shaft. One is sold by Dayton and you can get them from most any company that sell pumps. Try Grainger.com. Out local Ranchers Supply has them in stock. They go by shaft dia.
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Old 03-03-2015, 12:00:24 PM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Thanks, after seeing your photos, I went ahead and continued a gentle pecking process and sure enough the parts came out looking very similar to what you posted so when I go to town today I will carry all this stuff with me and see what I can find. Thanks for you all's help.
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Old 03-03-2015, 02:41:13 PM
Heins Heins is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

When you install the new seal, make sure the ceramic part and the carbon part are clean and dry. Don't put anything on them. You can put oil or grease on the rubber parts.
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Old 03-25-2015, 10:15:27 PM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

Well I made the road trip to get the fuel tank for this and 3 others that I had cleaned and lined and I stopped at a pump and irrigation company. They looked it over and said they would check about parts. The fellow came out with some seals similar to posted above but the sizes were wrong. He did say there was a chance he may not could get them but he would check. So hopefully he can get the part.
Thanks for the advice.If I can get the part it will turn out I ruined nothing that was not already broke.
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Old 03-26-2015, 10:08:31 AM
uglyblue66 uglyblue66 is offline
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Default Re: Briggs and stratton with Gorman Rupp pump

15 bucks is going to get a seal kit!
But the guy priced a impeller for me to. Why I dont know.But It floored me what the impeller cost.
Would you believe the impeller is 550 bucks!
I just told him we would pass on the impeller today!
All we want to do is pump water from a few rain barrels into the garden. At the price of parts like that I could just go buy a grocery store!
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