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 > Yanmar 3YM20 New Raw Water Pump Install Questions
 Not a Member? 


Thread: Yanmar 3YM20 New Raw Water Pump Install Questions 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)
10-16-2013 01:37 PM
Delta-T
Re: Yanmar 3YM20 New Raw Water Pump Install Questions

RAW water can also be fresh water....
10-16-2013 01:16 PM
NewportNewbie
Re: Yanmar 3YM20 New Raw Water Pump Install Questions

Its just a bit stiff, I dont want to force it the wrong way...lol...Im sure it will turn just fine...Thanks all! Gonna go slap it on!
10-16-2013 12:49 PM
Delta-T
Re: Yanmar 3YM20 New Raw Water Pump Install Questions

With the pulley on the pump, mine turns easy when all is rebuilt. I keep a spare rebuilt pump on board and spare impeller. My number 1 cause for engine issues. My Sherwood pump will work in both rotations, cover is marked so. But as "overboard" mentioned, be careful not to rotate one way then the other. You could damage impeller. I just rebuilt my backup pump after sitting for three years and found the the impeller, although intact, the fins were bent over at the cam spot and do not want to release that shape. I am sure with some use it will straighten out, but I opted to keep that impeller as spare. I rebuilt the pump but did not install the new impeller. I will install the impeller when pump is needed. Easy to do. I might be another few years before I need it.

You say the new pump won't turn? How long has it been sitting since it was manufactured? Are you trying to turn it with the pulley on? I don't think you will be able to turn it with only the shaft.
10-16-2013 12:31 PM
overbored
Re: Yanmar 3YM20 New Raw Water Pump Install Questions

the pump will turn by hand. it is designed to rotate in one direction only do not turn it the wrong way you can damage the rubber vanes
10-16-2013 12:06 PM
trantor12020
Re: Yanmar 3YM20 New Raw Water Pump Install Questions

1. Raw water = Sea water
2. Don't tighten the belt too tight like mentioned in manual. A little slack prevents damage to pump shaft.
3. You should be able to turn the pump/pulley without belt, its tight but doable.
4. You could grease the impeller with glycerine or Superlube.
5. Don't throw away your old pump. Recondition it and keep as spare.
10-15-2013 11:46 PM
NewportNewbie
Yanmar 3YM20 New Raw Water Pump Install Questions

I am going to install a new Raw Water pump (which is it Raw water? Sea Water? Just Water? I've heard them all....)in my Yanmar 3YM20 engine. Is there anything that I should do to make things last longer? I have brand new belts, anything else? Also should I be able to easily turn the pump? Its stiff, and wont turn, I do not want to force things if it will do damage, my thoughts are it needs water to lubricate the impeller. Do I need to spray any lube into it before install? Just checking before I install. Thanks!

 
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 01:16 AM.

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.