water pump orientation
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=42872
Printed Date: November-15-2024 at 7:17pm
Topic: water pump orientation
Posted By: leftseat88
Subject: water pump orientation
Date Posted: June-01-2018 at 6:49pm
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Hey All, i may have mixed up the orientation of the water pump and housing when i replaced my impeller. Can someone confirm the correct orientation. The pick up hose and the exit hose, which side of center should they be on. Which direction should the impeller blades be deflected. any help would be appreciated |
Replies:
Posted By: 8122pbrainard
Date Posted: June-01-2018 at 7:04pm
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Jason, Are you thinking a wrong orientation of the pump is your engine temperature problem that we have been trying to help you with in your other thread? If the pump is in backwards, you would get NO engine cooling but here's https://www.bing.com/videos/search?q=how+does+a+rubber+impeller+pump+work&qpvt=how+does+a+rubber+impeller+pump+work&view=detail&mid=32E4846320B3EC23528E32E4846320B3EC23528E&&FORM=VRDGAR" rel="nofollow - how a flexible impeller pump works. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: leftseat88
Date Posted: June-01-2018 at 7:12pm
| yes I'm still trying to fix my water temp problem. my pump itself might be bad. with the hose disconnected from the thermostat housing from the exit side of the water pump, how much water should the pump be pumping. we disconnected that hose and just let it run into the engine well area. are we talking fire hose or slow garden hose (engine was at idle) |
Posted By: Duane in Indy
Date Posted: June-01-2018 at 7:38pm
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Don't know your brand or rotation direction but here are some pics of pumps I reworked. Had to make a new impeller housing on the Jabsco and a new bearing housing on the Sherwood. Mine is a reverse rotation 302 by Commander Jabsco  Sherwood bearing housing  Jabsco impeller housing  ------------- Keep it as original as YOU want it 1978 Mustang (modified) |
Posted By: KENO
Date Posted: June-01-2018 at 8:00pm
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Since you have a LH engine in a 96 Sport Nautique the picture below shows the orientation of the pump. Use the one that says LH(GT40) The diagram is looking at the installed pump from the front of the engine. As soon as you rotate the engine the impeller blades will be lined up right. But like Pete said, if it's backwards it won't have any flow. You should get at least a few GPM sucking out of a bucket or the lake/river at idle. If you're hooked to a pressurized hose, that no fair, it'll skew your results. And don't run very long with all the water going to the bilge cause that means none of the water is going to the exhaust manifolds and you'll start to smell burning rubber on your exhaust hoses.
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KENO wrote:
Posted By: 8122pbrainard
Date Posted: June-01-2018 at 8:11pm
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Jason, From a site search: http://correctcraftfan.com/forum/forum_posts.asp?TID=32564&KW=bucket+test&PID=417883&title=bucket-test#417883" rel="nofollow - RWP bucket test thread BTW, I suggest keeping your cooling problem in one thread. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Duane in Indy
Date Posted: June-01-2018 at 8:17pm
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KENO, Think I read somewhere that even if you put the impeller in wrong that it should flip over the vanes on it's own. Looking at my pics I tend to agree. If we need verification then I can go out and try just that by hand as I still have both pumps open. You can go to the Sherwood site and it will give you the GPM. Remember these pumps turn close to crankshaft RPM. That is why they are toast after very few seconds of running dry. ------------- Keep it as original as YOU want it 1978 Mustang (modified) |
Posted By: KENO
Date Posted: June-01-2018 at 8:25pm
That's what I said in my last post Duane I've tried it before and they will flop over to the right way if you have them aimed wrong |
Posted By: Duane in Indy
Date Posted: June-01-2018 at 8:33pm
Sorry Ken. I was typing and thinking while you were busy posting.  ------------- Keep it as original as YOU want it 1978 Mustang (modified) |
Posted By: KENO
Date Posted: June-01-2018 at 8:38pm
I thought maybe your brain was scrambled from Pete's unreadable galvanic corrosion chart in the set screw thread
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Posted By: leftseat88
Date Posted: June-02-2018 at 12:47am
| Thanks everyone, I have the orientation correct. I’m thinking that the pump is toast. The angle between the shaft and the pulley in definitely not 90 degrees. Also the is a significant amount of “play” in the shaft when the pulley is moved. The exit hose of the water water pump got VERY hot after a short amount of time and when we pulled the hose, it appeared to be very dry. I believe that I am getting water to the bottom side of the pump because there is water in the hose when we disconnected it. |
Posted By: Hollywood
Date Posted: June-02-2018 at 12:55am
| Get some pictures up here. |