SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Changing A Raw Water Impeller (How To)
 Not a Member? 


Thread: Changing A Raw Water Impeller (How To) Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
04-29-2014 07:54 PM
benesailor
Re: Changing A Raw Water Impeller (How To)

I do all the same except use this brake lube for assembly. Works with rubber as well.

http://www.autozone.com/autozone/acc...uestid=8039288

I use it for my turn buckles as well.
04-29-2014 03:08 PM
ferg
Re: Changing A Raw Water Impeller (How To)

yanmar 4jh dte with litte acces - how to?
08-01-2008 09:56 PM
SEMIJim Well, looks like I won't be obtaining a Johnson MC97 impeller for our engines Oberdorfer 202M-series pump. Johnson doesn't make one for that pump. Nor does Jabsco. The only impeller manufacturers that make impellers for our pump is Oberdorfer (Neoprene), Globe (out of the question), Barco (whomever that is--same p/n as Globe, so I suspect that's a re-badged Globe) and Sherwood (which I cannot confirm because their web site is basically utterly and completely worthless.)

So it looks like it's the Oberforfer impeller for us.

Jim
08-01-2008 08:03 PM
captbillc
ancient mariner

haleki 36 that is a great w/p impeller photo ! i thought every one can use an aid to install the impeller. use a hose clamp and curve all the blades in the same direction as you tighten the clamp till they are small enough to enter the houslng. just be sure they are bent in the right direction when you push the impeller in. this makes the job easy. i am a retired diesel mechanic and use this method
08-01-2008 08:13 AM
SEMIJim Moyer Marine makes a replacement back plate for most Oberdorfer pumps on A4s that employs an o-ring and four captured knurled-head screws. The advantages are three-fold: No more having to replace the gasket, no more having to get a screw-driver on to the screws--possibly from an awkward angle/position, and no more dropping screws, etc. into the bilge .

Perhaps the Speed Seal cover offers some of the same advantages?

Thanks for the picture of the new impeller, Hal!

Jim
08-01-2008 07:12 AM
Maine Sail
Re: Speed Seal

Having had one on a boat that I owned, came with it, I can't understand why someone would pay good money for this.

It takes me all of about 30 seconds to remove all the screws and it took me the same amount of time to un-thread all the Speed Seal screws as they are the same thread pitch. I really did not realize much if any time savings with the Speed Seal..
07-31-2008 11:00 PM
sailingdog TDW-

The speedseal has slots for some of the screws IIRC, so you don't have to remove all the screws all the way to remove the seal plate.
07-31-2008 10:49 PM
tdw
Quote:
Originally Posted by camaraderie View Post
Fuzzy...I think you are referring to speedseal.com
That's the thing. Looks to me as if the only change is using gnurled knob instead of slotted screws. Not a bad idea I must admit but hardly revolutionary.

Any thoughts ?
07-31-2008 10:44 PM
Maine Sail
Quote:
Originally Posted by SEMIJim View Post

How can you tell if Johnson impellers are fabricated with their new MC97 compound?

Jim
Like this..

07-31-2008 10:32 PM
SEMIJim
Quote:
Originally Posted by halekai36 View Post
I got nowhere with Globe...
Yours would be the third incident I've read of where somebody had premature failure of a Globe RunDry [tm] impeller and got no satisfaction from Globe Composite Solutions, Ltd. That's enough for me. Any company can have product failures, but I expect vendors and manufacturers to stand by their products.

Quote:
Originally Posted by halekai36 View Post
...and if I remember correctly it was a metal hub.
So much for that theory

Quote:
Originally Posted by halekai36 View Post
My current thinking is that my Johnson impeller was an old one when I installed it. My baot came with two new spares but who knows how "old" they were.
...
I've had this happen before and never seen cracks so my only guess is that the impeller was many years old and the rubber was aging before I actually installed it?
That would certainly explain it!

Quote:
Originally Posted by halekai36 View Post
After this incident I bought 3 new impellers all with the new MC97 compound and threw away my one year old used ones. At $16.00 for an impeller why risk it..
Indeed! I'll buy two and install one this season. Next season I'll install the other and order a new spare. Each season: Wash, rinse, repeat.

How can you tell if Johnson impellers are fabricated with their new MC97 compound?

Jim
This thread has more than 10 replies. Click here to review the whole thread.

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 05:16 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.