Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 18-07-2015, 14:32   #16
Moderator
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 7,888
Images: 1
Re: Yanmar Impeller Help!

Ok, let me just toss out a "low tech" plan. You have a cork from a wine bottle aboard, right? Take this cork and lay three small diameter threaded screws around the cork and bind them with a hose clamp. The screws should be placed so they extend about an inch beyond the end of the cork. Tighten the hose clamp just enough so that the screws are held firmly in place and then fit the screw ends over the hub of the impellor. Tighten the hose clamp and then use the pliers around the cork and clamp to pull out the impellor that is secured by the threads of the screws imbedded in the rubber.
__________________

__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 18-07-2015, 16:12   #17
Senior Cruiser
 
Jim Cate's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 12,330
Re: Yanmar Impeller Help!

A philosophical comment:


A pox upon folks (in this case both Yanmar and Oyster) who design things where a commonly replaced item like an impeller is so difficult to access. Sadly common, too.

One advantage in buying a one-off designed and built by an experienced cruiser who gave some thought to such issues... but even here there are some difficult areas.

Meanwhile, hope that you can find the bolt, Ken, and when you do, y ou might publish the diameter and pitch for other Yanmar owners.

Jim
__________________

__________________
Jim and Ann s/v Insatiable II , lying Pittwater, NSW fora while.
Jim Cate is online now   Reply With Quote
Old 18-07-2015, 16:14   #18
Registered User

Join Date: May 2008
Posts: 2,092
Re: Yanmar Impeller Help!

You are wrong about the job taking only 10 minutes with the Yanmar tool. It's more like 5 minutes. Yanmar should include the tool with each engine that has the threaded impellers.

If you can't find something with an M18 thread to use as a tool, maybe you could make one using a glob of epoxy putty like JB Weld with a nut embedded in the middle. The lubricant you've put on the impeller will keep the epoxy from sticking to anything but it should get a grip in the thread. I don't think the pulling force needs to be all that high.
CarlF is offline   Reply With Quote
Old 18-07-2015, 16:34   #19
Registered User

Join Date: Feb 2013
Location: Lago de Izabal, Guatemala
Boat: Seafarer36c
Posts: 4,450
Re: Yanmar Impeller Help!

Who ever installed that impeller did not get all the vanes going in the right direction. Must be a pretty hard job to get right in a tight space like that.
Why is there both an O ring and sillycone on the cover plate? Maybe time for a new O ring too?
Personally I would rip and tear at this point. There is nothing to loose. Like the mate said, fewer vanes the better.
Ecos is offline   Reply With Quote
Old 18-07-2015, 17:46   #20
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,765
Images: 9
Re: Yanmar Impeller Help!

If you can't get it out I can highly recommend a mechanic in Portoferraio. His name is Mauro and speaks good English. The yard where he works is Home Page - Esaom-en Very honest and competent. Rates are not bad either. Long walk to town but doable. He has helped me out in a couple of situations.
__________________
Fair Winds,

Charlie

Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 18-07-2015, 18:17   #21
Registered User
 
katsumi's Avatar

Join Date: Feb 2011
Location: Sydney,NSW, Australia
Boat: Lagoon 400
Posts: 155
Re: Yanmar Impeller Help!

Ken
Lot of great suggestions here...
Take a step back, you had a fault with your generator, which sounded like you found the cause.
Correct me if you are wrong you did not have a problem with the main engine over heating, you just thought you should check the impellor because the generator had failed?
The photo you have sent of what I assume is the main engine impellor from the main engine. I have seen a lot worse condition impellor than that which still work enough to get you to safe haven.
My suggestion would be (unless you have destroyed the impellor already) put the cover plate back on and return to safe haven so then you can work on the pump with out the risk of been stranded somewhere. Then follow the other suggestions listed here.
Good luck with it.
__________________
Dream as if you'll live forever. Live as if you'll die today.
- James Dean -
katsumi is offline   Reply With Quote
Old 18-07-2015, 18:40   #22
Registered User

Join Date: Jan 2010
Location: Narragansett Bay
Boat: Able 50
Posts: 3,123
Re: Yanmar Impeller Help!

You might have the same motor as me. Mine is the 100hp version of the 4JH series.

The issue is not with the splines but with the center which is a VERY tight fit and the thing that I'm guessing is causing all the drag. When removing my raw water impeller I had to use a puller. This is the puller that I used
http://www.amazon.com/Jabsco-50070-0...XMG5FARMKD4SXH

I remember that it doesn't fit the available space. I'll post tomorrow with details of what I did - gotta find the thing first and there is a ball game on now. Sox v Angels 0 - 0 so far.
savoir is offline   Reply With Quote
Old 18-07-2015, 21:24   #23
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,945
Re: Yanmar Impeller Help!

Quote:
Originally Posted by Jim Cate View Post
....

Meanwhile, hope that you can find the bolt, Ken, and when you do, y ou might publish the diameter and pitch for other Yanmar owners.

Jim
Try M18 x1.5, this is according to the second link in post #11.
Might not be right, but feels right!
Good place to start.
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 18-07-2015, 21:58   #24
Registered User

Join Date: Apr 2014
Boat: Leopard 47PC 47 feet
Posts: 80
Re: Yanmar Impeller Help!

Find a wood screw with a hex head. Use a small socket to screw it into the rubber as close to the metal sleeve as you can get. Use "vice grips" to grab the screw from the side and a wrench / screw driver to act as a fulcrum against the pump body. Then just lever it out. If the screw pulls out - use a bigger screw.



(I usually try to carry a complete pump and just swap the pump out. Much easier to switch the impeller when the whole thing is in your lap.)
edmundsteele is offline   Reply With Quote
Old 18-07-2015, 22:17   #25
Registered User

Join Date: Oct 2011
Location: Wherever the wind takes me
Boat: Bristol 41.1
Posts: 864
Re: Yanmar Impeller Help!

Deja vu all over again.

Had a nearly identical situation. Westerbeke generator and Yanmar main engine. Replaced the genny impellor (15 minutes?) and then struggled over an hour with the Yanmar. Tracked down a mechanic who was working in the yard. He smiled at my dilemma, got a puller out of his truck, and removed the impellor in a couple minutes.

This is the tool:
Attached Thumbnails
Click image for larger version

Name:	impellerr_l.jpg
Views:	91
Size:	13.0 KB
ID:	105587  
redsky49 is offline   Reply With Quote
Old 18-07-2015, 23:06   #26
Senior Cruiser
 
Kenomac's Avatar

Cruisers Forum Supporter

Join Date: Jan 2012
Location: Somewhere in the Adriatic Sea
Boat: Oyster 62 Cutter, Oyster 53 Cutter (for sale)
Posts: 8,770
Re: Yanmar Impeller Help!

Quote:
Originally Posted by katsumi View Post
Ken
Lot of great suggestions here...
Take a step back, you had a fault with your generator, which sounded like you found the cause.
Correct me if you are wrong you did not have a problem with the main engine over heating, you just thought you should check the impellor because the generator had failed?
The photo you have sent of what I assume is the main engine impellor from the main engine. I have seen a lot worse condition impellor than that which still work enough to get you to safe haven.
My suggestion would be (unless you have destroyed the impellor already) put the cover plate back on and return to safe haven so then you can work on the pump with out the risk of been stranded somewhere. Then follow the other suggestions listed here.
Good luck with it.
Correct, the main engine is working fine which is why I'm going easy on the removal. I'm 8 miles outside Portoferraio and Charlie's mechanic, so want to leave that option open. Today is Sunday so everything is closed, but I'll take a better look around the boat for a suitable bolt this morning and a bike ride into town. Thank goodness the generator has an automatic overheating shutdown, when the impeller exploded and plugged up the housing outflow, the generator shut down. There was a 90 degree elbow which caught all the rubber pieces, so noting went into the heat exchanger.

Thanks for all the great suggestions so far.

Ken
Kenomac is offline   Reply With Quote
Old 18-07-2015, 23:20   #27
Senior Cruiser
 
Kenomac's Avatar

Cruisers Forum Supporter

Join Date: Jan 2012
Location: Somewhere in the Adriatic Sea
Boat: Oyster 62 Cutter, Oyster 53 Cutter (for sale)
Posts: 8,770
Re: Yanmar Impeller Help!

Quote:
Originally Posted by Charlie View Post
If you can't get it out I can highly recommend a mechanic in Portoferraio. His name is Mauro and speaks good English. The yard where he works is Home Page - Esaom-en Very honest and competent. Rates are not bad either. Long walk to town but doable. He has helped me out in a couple of situations.
Charlie,

It's a small world. Just yesterday, we were anchored in Portoferraio next to two U.S. Flagged boats and a Canadian couple. One we didn't get a chance to meet since they departed very early, but spent some time on the Canadian trawler and with the couple from Northern CA on their Swan 65. All arrived within a short period of time, then all gone by noon including us. We decided to get away from the ferry wakes to tackle the repair.
Kenomac is offline   Reply With Quote
Old 19-07-2015, 00:44   #28
Registered User
 
DumnMad's Avatar

Join Date: Mar 2012
Location: Nelson NZ; boat in Brisbane
Boat: 45ft Ketch
Posts: 1,311
Re: Yanmar Impeller Help!

Quote:
Originally Posted by Hudson Force View Post
Ok, let me just toss out a "low tech" plan. You have a cork from a wine bottle aboard, right? Take this cork and lay three small diameter threaded screws around the cork and bind them with a hose clamp. The screws should be placed so they extend about an inch beyond the end of the cork. Tighten the hose clamp just enough so that the screws are held firmly in place and then fit the screw ends over the hub of the impellor. Tighten the hose clamp and then use the pliers around the cork and clamp to pull out the impellor that is secured by the threads of the screws imbedded in the rubber.
Thats just brilliant HUD.
DumnMad is online now   Reply With Quote
Old 19-07-2015, 01:17   #29
Senior Cruiser
 
Kenomac's Avatar

Cruisers Forum Supporter

Join Date: Jan 2012
Location: Somewhere in the Adriatic Sea
Boat: Oyster 62 Cutter, Oyster 53 Cutter (for sale)
Posts: 8,770
Re: Yanmar Impeller Help!

Quote:
Originally Posted by Jim Cate View Post
A philosophical comment:


A pox upon folks (in this case both Yanmar and Oyster) who design things where a commonly replaced item like an impeller is so difficult to access. Sadly common, too.

One advantage in buying a one-off designed and built by an experienced cruiser who gave some thought to such issues... but even here there are some difficult areas.

Meanwhile, hope that you can find the bolt, Ken, and when you do, y ou might publish the diameter and pitch for other Yanmar owners.

Jim
Mostly a Yanmar access issue. Oyster provided near complete access from the impeller side of the engine, but Yanmar placed hoses and a starter motor in my way. No way to get tools and two hands in there other than using a specific impeller pulling tool.

I put the cover back on the housing, heading back to Portoferraio first thing Monday to anchor near the shipyard. Hopefully, find a parts house at 9am and be on our way by mid day.

It's the safe choice, no sense taking any chances, we have plenty of time. Right now, we seem to be having a cascade of issues. Last week everything had been working just fine for over a month and we had just finished the deck work to 90%.

Then the fridge sprang a coolant leak, the deep freezer lost a compressor and is limping along. Genset impeller gone yesterday... We're now just one step ahead of camping, but we're still moving ahead. Will get the motor and genset working again tomorrow.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	97
Size:	400.1 KB
ID:	105591  
Kenomac is offline   Reply With Quote
Old 19-07-2015, 05:39   #30
Registered User

Join Date: Jan 2010
Location: Narragansett Bay
Boat: Able 50
Posts: 3,123
Re: Yanmar Impeller Help!

Here is my puller. I had to cut the central pin to make it fit in the available space.


Click image for larger version

Name:	P7190466.jpg
Views:	96
Size:	433.1 KB
ID:	105600
__________________

savoir is offline   Reply With Quote
Reply

Tags
yanmar

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Farymann Diesel Impeller HELP!!! Seneca Chief Engines and Propulsion Systems 8 20-07-2015 13:08
2qm20 impeller help BurningDaylight Engines and Propulsion Systems 5 11-06-2015 15:42
Impeller replacement Yanmar 3JH2 wmgysi Engines and Propulsion Systems 1 29-12-2012 23:49
Yanmar 4jh2e Impeller Problem journey1 Engines and Propulsion Systems 8 12-08-2011 16:35
Yanmar Impeller Change boeing1 Engines and Propulsion Systems 16 21-02-2011 19:26



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:12.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.