07 660 oil leak question. - Yamaha Rhino Forums - Yamaha UTV Forum
Yamaha Rhino General Discussions General discussions pertaining to the Yamaha Rhino.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 02-20-2011, 12:14 PM Thread Starter
1/4 Throttle
 
Join Date: Feb 2011
Location: Guymon Oklahoma
Posts: 5
07 660 oil leak question.

Have an 07 660 that recently had a new piston and rings installed by previous owner and he experienced a fairly severe oil leak. I bought it from him and quickly found the source of the leak. There was a little clear hose (1/8th inch) that was laying on the skid plate right under the engine. I used a zip tie and tied it up vertical so it would not leak. I assumed this was some sort of breather hose for the crank. After running it for about 200 miles everything was okay. This last oil change I put in a heavy 15w40 oil and now it pushes a little oil out and coats the passenger side of the engine. I have looked in my repair manual and it never mentions this little hose, so I ask: What is the purpose of the hose and where should it be located? Can post pictures if needed.

Thanks in advance!
kyleofthenile is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 02-20-2011, 12:55 PM Thread Starter
1/4 Throttle
 
Join Date: Feb 2011
Location: Guymon Oklahoma
Posts: 5
IMG00165-20110220-1323 Paint.jpg

The hose outlined in white is the leaking hose. I have no idea where it goes. The hose in red is the carb breather hose.
kyleofthenile is offline  
post #3 of 7 (permalink) Old 02-21-2011, 06:19 AM
Wide F'n Open
 
onebuilder's Avatar
 
Join Date: Jul 2008
Location: Skull Valley, AZ.
Posts: 155
Kinda hard to tell. Looks like it may be the hose coming off of the bottom of the water pump. Pull the right rear tire and look at the bottom of th water pump. It may be a simple and cheap fix.

Dirt flies when your having fun!
onebuilder is offline  
post #4 of 7 (permalink) Old 02-21-2011, 07:09 AM Thread Starter
1/4 Throttle
 
Join Date: Feb 2011
Location: Guymon Oklahoma
Posts: 5
Ok, I pulled the tire and then used my repair manual to confirm that the hose is the water pump breather hose. I still don't know why oil is coming out of it and where the hose is supposed to go. The diagram in the manual is not so good...
kyleofthenile is offline  
post #5 of 7 (permalink) Old 02-21-2011, 10:39 AM
Wide F'n Open
 
onebuilder's Avatar
 
Join Date: Jul 2008
Location: Skull Valley, AZ.
Posts: 155
Ok, The vent line only attaches to the water pump, the other end lies under the engine going out back towards the right rear tire. On the 660s the water pump is driven off the oil pump. You have a seal that has gone bad between the water pump shaft and the oil pump. Easy fix, remove the water pump and replace as an assembly or just the needed seals. Look at a parts breakdown of the water pump online. Where are you located? Apache Yamaha(as do most dealers) have a great parts breadown with descent prices.

Check your radiator and cooling system for oil in it! You may have to flush the system if it has oil in it. Usually coolant leaks out of that hose when the seal goes bad.

Do you see coolant in the oil?

Dirt flies when your having fun!
onebuilder is offline  
post #6 of 7 (permalink) Old 02-25-2011, 01:51 PM Thread Starter
1/4 Throttle
 
Join Date: Feb 2011
Location: Guymon Oklahoma
Posts: 5
Checked the coolent and didn't find oil in it. So I went ahead and pulled the water pump. Noticed that the lip on the oil seal was backwards and the little spring that helps hold the seal tight to the shaft had a small kink in it. My only guess it that it had water pump seal problems once before and somebody doesn't know the proper way shaft seals are supposed to be installed. I'll have to inform my friend on the proper way soon...

I have a new water pump coming in the mail. I didn't like how the shaft was worn where the seal rubs, and the ceramic portion didn't look to be in too good of shape and one fin on the impeller was missing... I thought it best to start from scratch!

Thanks for your help!
kyleofthenile is offline  
post #7 of 7 (permalink) Old 02-28-2011, 01:56 PM
Founding Ninja
 
07fj's Avatar
 
Join Date: Jun 2008
Location: ramona, ca
Posts: 3,156
Quote:
Originally Posted by kyleofthenile View Post
Checked the coolent and didn't find oil in it. So I went ahead and pulled the water pump. Noticed that the lip on the oil seal was backwards and the little spring that helps hold the seal tight to the shaft had a small kink in it. My only guess it that it had water pump seal problems once before and somebody doesn't know the proper way shaft seals are supposed to be installed. I'll have to inform my friend on the proper way soon...

I have a new water pump coming in the mail. I didn't like how the shaft was worn where the seal rubs, and the ceramic portion didn't look to be in too good of shape and one fin on the impeller was missing... I thought it best to start from scratch!

Thanks for your help!
yes start from scratch.

make sure you burp the system after filling with water/coolant.

on driver side outlet there is a small bolt for bleeding air out., fill with water start motor with bleeder open, keep filling until water comes out the top, tighten. run for a couple minutes at idle, then check rad to see if still full.



Benchmark Performance 686, 67.6 RWHP
http://www.unleashedutv.com/ 602-246-4011
Rigid Industries 480.655.0100
07fj is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha Rhino Forums - Yamaha UTV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58