Sherwood pump help

I’m just gonna head down the river to Gary’s when mine starts leaking. He’s got all the tools and experience!

Well I finally got back to the RWP rebuild. I ordered a Major repair kit off e/Bay went at it. Things went well after cleanup and removal of old paint. HF press sure does come in handy for this type of stuff. Only problem I ran into was installing the Seat assembly (#13) onto the shaft. Tried lubricating the rubber part with soapy water 1/1 mixtures as recommended but the rubber kept pushing up out of the metal piece while sliding it on the shaft. Pushed on the shaft with the retaining washer on top and a good fitting pipe to press it down with. but could not get it down to the retaining ring slot without the rubber squeezing up and out.
I called the e-Bay seller and he sent me a new seal and some special lube he had just been working with to help with seal installs. No charge. Using this stuff and the new seal it went on like butter and had not issues. I also followed his recommendation and rounded over the bottom edge of the retaining ring slot to prevent the rubber from hanging up there.
Also I did have to press the pully back on, since I took it off prior to hearing other ideas for disassembly. But with a little heat on the pully from a propane torch and the press it went back on without too much effort. I would not want to try it without a good press though.

Thanks for all the ideas and tool suggestions for this project. Sure is great having all of this knowledge available from people who like doing these things and sharing.

Mpost wrote: Wow I just bought the boat this year with over 1170 hours on it, wondering if this is the original pump

Any chance you bought it a couple weeks ago and it is teal and white with a tower?
I saw one like that your way just a little while back.

8122pbrainard wrote: E] Ken, Gary must not have seen those instructions since they do tell you to remove the sheave!

They also tell you to replace the impeller every year too,so who you going to believe.........

KENO wrote: On page 29 you can find Sherwood's directions for disassembly and assembly of the pump link

Ken,
Gary must not have seen those instructions since they do tell you to remove the sheave!

I had to make a new bearing housing for mine, same reason. Used aluminum on mine

Mpost wrote: Wow Now I wish I had not popped the shaft out of the pulley last night. Came out without a problem on my press and no damage to the pulley. So I think with a little heat and cooling I'll be able to get it back in when I'm done.

Martin,
You did good. Don't worry about getting that sheave back on the shaft. Gary's just paranoid because he breaks things in the press!

Gary S wrote:

Gary S wrote: I cannot stress enough - Do not remove the pulley from the shaft,not needed,too hard to deal with,might break some thing.....

The Fox River here by me is closed for high water. Again been a bad year for boating

8122pbrainard wrote: "Maintenance schedule" What's that? I'm still running the original bearings and seals on the 54, 64 and 77!!

Probably cause you don't run any of them? Seems that you're always at Homey D or on CCFan!

Thanks Ken. I'm really surprised these questions don't come up more often. Sherwood recommends a major service like this every 4 years, 2 if severe service like high rpm. No one following maintenance schedules   

Here's a recent thread with more pictures from Gary and lots of discussion about the pump

link

Once you do one you'll be amazed at how easy it is.

When you get the seal out you will be able to reach in and remove the snap ring that holds the shaft in



Ignoring that the seal is in place in this picture,you then just push on this end of the shaft. When you get even with the pump base with the press I used a 3/8 extension to push the shaft through the bearings until it's out.



You will end up with the pump housing in one hand,the shaft with the pulley still on in the other. Then you can remove the snap rings holding the bearings in place and press the bearings out. You can then replace the snap ring on the shaft also-



Can't find a picture yet but when you are reassembling and get to where the seal goes back in, I used a piece of plastic electrical pipe to use as a spacer to push the seal into place.

Thanks for all the suggestions and pictures. I have a press so should not be a problem.
Gary, how do you get to the snap ring at the pulley end without removing the pulley. With the retaining rings on the shaft and the ones on both ends of the bearings the shaft wont come out of the bearings, will it????
Ill be out of town for 12 days so will have to wait until then to dig into it.
Thanks!

Most of the ones I've worked on,the pulley is a "shrink" fit. Meaning they freeze the shaft and heat the pulley. Good luck removing it   I like the keyway and set screw approach but some backyard hack engineers decided they could save a few $$ by eliminating that operation. Engineers should have to work on some of these ingenious inventions they come up with. Good reference is the inverted oil filters.

Your going to run into other road blocks as you go too. I made a crude jig to remove the bearings with my press. Removing and installing the shaft/pulley is the hardest part followed by removing the bearings from the housing only because the housing is dirty and rusty,they will reinstall by hand,shaft and pulley need to be pressed back thru the bearings

Do not put any force on this end it will break



This is what I made to push the shaft out and how it sits in the press.



I'll keep looking for pictures,photobucket is not cooperating.