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Old 06-05-2015, 07:10 PM   #1
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Sherwood Impeller Puller?

Anyone have experience using one of these Sherwood impeller pullers? They look nice and simple compared to the old Sea Dog type of pullers. The Sherwood costs less than half of the other type, and with their poor pump reputation I'm concerned that the tool actually works...

Here's a link to the tool in question: Impeller Puller - Sherwood | Fisheries Supply

Thanks!
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Old 06-05-2015, 07:16 PM   #2
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Greetings,
Mr. M. So does this thing cut threads on the inside of the brass bushing? I wouldn't spent the $15 to try. My Sherwoods were replaced with Johnsons so I have exactly the same set up as far as removal goes. Thus far I have been fortunate to be able to gently pry with screwdrivers to facilitate impeller removal without damage to the housing.
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Old 06-05-2015, 07:26 PM   #3
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Before I replaced the Sherwood pump on our Cummins with a Tony Athens SMX pump, a pair of these did the job, sorta.
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Old 06-05-2015, 07:27 PM   #4
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Mr. Firefly, you ask a good question. I assumed (and yes, I know what that means...) that the Jabsco impellers I have are already threaded on the inside. I have quite a few replacement impellers aboard, so I might have to open one, see if it has threads, and put into a ziplock for long term - I hope - storage.

And I just replaced both main impellers last year about this time, so I didn't bother to even look if they were threaded. At that time I used a combination of needle nose pliers, screw drivers and four letter words to get the darn things out. I figure if I need to do that again while underway or in the boonies somewhere, I would rather have a puller on hand.

So maybe I should ask a follow up question: do the $40 Sea Dog type impeller pullers work well?

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Old 06-05-2015, 07:28 PM   #5
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Quote:
Originally Posted by dwhatty View Post
Before I replaced the Sherwood pump on our Cummins with a Tony Athens SMX pump, a pair of these did the job, sorta.
That was sorta my experience, too!
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Old 06-05-2015, 07:42 PM   #6
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Greetings,
Mr. M. Any replacement impellers I've ever seem have NOT been threaded. I cannot comment on ANY pullers as I've never used one. I may live to regret that decision although I DO have a pretty good stock of cuss words myself.

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Old 06-05-2015, 07:50 PM   #7
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Greetings,
Mr. M. Any replacement impellers I've ever seem have NOT been threaded. I cannot comment on ANY pullers as I've never used one. I may live to regret that decision although I DO have a pretty good stock of cuss words myself.
The SMX impellers are threaded and you get an impeller puller with them. Work great. Now getting the new impeller in is a bit of a different story. Cuss words definitely needed.
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Old 06-05-2015, 08:07 PM   #8
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I have the puller, and the impellers (at least for my 1700 series pumps) are definitely threaded. I've used it twice. The first time I had to hammer the crap out of the handle to get the impeller out. The other engine, the impeller came out slick as shit thru a goose. I think the key is to lube the shaft copiously when installing a new impeller so that it comes out easily next time.
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Old 06-05-2015, 08:10 PM   #9
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I stand corrected.
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Old 06-05-2015, 09:08 PM   #10
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The Sherwood impellers on my 1989 6BT5.9M Cummins are not threaded. I use these.
TEKTON 3492 11-Inch Long Reach 90-Degree Bent Nose Pliers - - Amazon.com
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Old 06-05-2015, 10:51 PM   #11
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Quote:
Originally Posted by Moonfish View Post
Anyone have experience using one of these Sherwood impeller pullers? They look nice and simple compared to the old Sea Dog type of pullers. The Sherwood costs less than half of the other type, and with their poor pump reputation I'm concerned that the tool actually works...

Here's a link to the tool in question: Impeller Puller - Sherwood | Fisheries Supply

Thanks!
They work quite well. I use one on the current boat I run.

But obviously they only work on the impellers that have threaded bushings.
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Old 06-05-2015, 10:54 PM   #12
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Quote:
Originally Posted by dwhatty View Post
The SMX impellers are threaded and you get an impeller puller with them. Work great. Now getting the new impeller in is a bit of a different story. Cuss words definitely needed.
Next time fold the blades over with a wire tie or hose clamp. Then slip it in and move the clamp or tie out as you go. Or fold and wrap the blades down with string that you can pull out after you've slipped the impeller in.
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Old 06-05-2015, 11:00 PM   #13
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Moonfish, yes the Seadog pullers are a pretty good knock off of the Jabsco pullers at about half the price.

Dave, I truly hate the Sherwood pump that came on my 6bt5.9m. You can't change the impeller without pulling the hoses off. Why couldn't they have put a removable cover on the damn thing! I wish Jabsco or SMX would make a replacement for it.
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Old 06-06-2015, 12:10 AM   #14
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I modified my Jabsco puller by replacing the plastic handle bolts with regular bolts and cutting the T handle down. Much easier to use in a confined space. Also I spray the inside of the pump with soapy water before pulling the old impeller out. Makes it easier to slide out.
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Old 06-06-2015, 08:13 AM   #15
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Dave, I truly hate the Sherwood pump that came on my 6bt5.9m. You can't change the impeller without pulling the hoses off. Why couldn't they have put a removable cover on the damn thing! I wish Jabsco or SMX would make a replacement for it.
Huh? I don't need to pull no stinkin' hoses off. A fuel cooler hose is in the way a bit but that's all on our 6BTA.
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Old 06-06-2015, 08:17 AM   #16
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Next time fold the blades over with a wire tie or hose clamp. Then slip it in and move the clamp or tie out as you go. Or fold and wrap the blades down with string that you can pull out after you've slipped the impeller in.
Have tried that. Worked okay on the old Sherwood impellers. Doesn't work for me with the SMX ones. The SMX impellers are stiffer and thicker than the Sherwood ones. Thinking of using a piston ring compressor next time.
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Old 06-06-2015, 08:23 AM   #17
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Dave, the BTA uses a different pump. On the BT the pump doesn't have a cover plate. You have to remove the whole pump body to get at the impeller. It is a PITA.
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Old 06-06-2015, 09:12 AM   #18
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Dave, the BTA uses a different pump. On the BT the pump doesn't have a cover plate. You have to remove the whole pump body to get at the impeller. It is a PITA.
Whoa! What were they thinking?
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Old 06-06-2015, 09:42 AM   #19
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Quote:
Originally Posted by Moonfish View Post
Anyone have experience using one of these Sherwood impeller pullers? They look nice and simple compared to the old Sea Dog type of pullers. The Sherwood costs less than half of the other type, and with their poor pump reputation I'm concerned that the tool actually works...

Here's a link to the tool in question: Impeller Puller - Sherwood | Fisheries Supply

I have Sherwood pumps, the impellers are threaded, and I have that puller. It works well enough, but there's not a lot of room in our installation for the handle to rotate. OTOH, the handle is useful when actual "pulling" and "pushing" is necessary.

FWIW, I bought a couple hex-head bolts, one 3" and one 4", from McMaster-Carr, with the same threads. That way I can put a socket on the bolt head and use that to back the impellers out.

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Old 06-06-2015, 03:15 PM   #20
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Quote:
Originally Posted by fryedaze View Post
The Sherwood impellers on my 1989 6BT5.9M Cummins are not threaded. I use these.
TEKTON 3492 11-Inch Long Reach 90-Degree Bent Nose Pliers - - Amazon.com
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