Yanmar 3YM20 belt change - SailNet Community

   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 > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 09-28-2013
NewportNewbie's Avatar
Senior Member
 
Join Date: Jul 2011
Location: Newport Beach
Posts: 504
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
NewportNewbie is on a distinguished road
Having problems changing the water pump and alternator belts. Mainly just getting the alternator belt off. What bolts do I have to loosen?? Here is a pic of where I am now. The lower adjustment bolt is loose. What am i missing?? I plan on getting a crescent wrench and trying to loosen the bolt on top of the alternator is that what I need to do??? Not used to working on boat diesels lol. Cars seem much more logical.

__________________
S/V Cuajota - 1975 WD Schock Santana 30

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 09-28-2013
overbored's Avatar
Senior Member
 
Join Date: Oct 2010
Location: Dana Point, Ca
Posts: 991
Thanks: 1
Thanked 40 Times in 40 Posts
Rep Power: 5
overbored is on a distinguished road
Re: Yanmar 3YM20 belt change

loosen both the top and bottom bolts and it should move like an older style car alternator. heres the manual if you don't have one.
http://yanmar.com/product/marineplea...V2_21JAN09.pdf
http://tehstar.ru/assets/files/manuals/3YM30.pdf
Figure 31 in the parts manual shows there are two bolts on the top and one on the bottom but sometimes you also have to loosen the bolt that mounts the slotted adjustment bracket to allow the bolt to slide in the slot
__________________
"FULL TILT" SOVEREL 33
"GOLD RUSH" PRINDLE 16

Last edited by overbored; 09-28-2013 at 04:00 AM.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

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

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Expected life of Yanmar 3YM20 donjuanluis Diesel 1 09-25-2013 09:36 PM
Yanmar 2YM15 Or 3YM20 for repower jbrockpiano Gear & Maintenance 9 04-10-2013 07:28 PM
Yanmar 3YM20 problem Lathe Diesel 12 01-21-2012 07:31 PM
exhaust elbow yanmar 3ym20 Ceezed Diesel 1 12-22-2011 08:29 PM
yanmar 3ym20 raw water pump Ceezed Diesel 4 11-02-2011 11:15 PM


All times are GMT -4. The time now is 01:23 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.