Yanmar Transmission Leak - 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 > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 

Diesel This is a forum dedicated to diesel engines and their applicable accessories.


Reply
 
LinkBack Thread Tools
  #1  
Old 03-26-2011
Junior Member
 
Join Date: Jul 2009
Location: Mississauga
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
RLMToronto is on a distinguished road
Yanmar Transmission Leak

Wondering if anyone has replaced the rear transmission seal (leaking just before where it couples to the prop shaft) on a Yanmar 3hm35f in a Pacific Seacraft 34. I'm guessing that the tranny will actually need to be removed to do so but was hoping not. I have the service manual but it is not as detailed as hoped. It appears to me that the tranny case cannot be removed without removing the two rear engine mounts as well.
Also wondering if anyone might have had experience, either good or bad, with a stop leak product.
Thanks in advance for any input.
LM
Reply With Quote Share with Facebook
  #2  
Old 03-26-2011
Junior Member
 
Join Date: Feb 2010
Location: Mobile, AL
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
bfloyd825 is on a distinguished road
Did that on my Endeavour32 with a 2QM20. Not too bad a job. Just mark the coupling and slide it back a little. Then remove the coupling from the transmission. You can then pop the seal with a screwdriver. Take the seal to a bearing shop and they can usually read the number on the seal and give you a rePlacement for about 5$. Reverse the process to install. The worst part is the limited room to work in the engine room. Look at a parts manual to see how it all works. Not too bad anon if you are a wrench type person. Make sure you have plenty of rags aand a small container to catch the old oil so that it does not go all over your bilge area.
__________________
Endeavour 32
Reply With Quote Share with Facebook
  #3  
Old 03-26-2011
centaursailor's Avatar
Senior in age only!!!
 
Join Date: Nov 2010
Location: Balbriggan
Posts: 554
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
centaursailor is on a distinguished road
Sounds like a sound plan. You could remove the oil before starting with a pump to save spillage and possible contamination.
Check there are no rough spots along the shaft prior to reassembly as the seal face is very sensitive. Some clean oil on the shaft will also help. Rotate the seal as you push forward will help keep the seal face from jamming and getting damaged or nicked.
Safe sailing
__________________
The great appear great because you are on your knees. James Larkin, Irish Labour Movement.
Reply With Quote Share with Facebook
  #4  
Old 03-27-2011
Junior Member
 
Join Date: Jul 2009
Location: Mississauga
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
RLMToronto is on a distinguished road
Progress

Thanks for your suggestions. I got the coupling off of the shaft today, which exposes the seal and it does indeed look like it will pop out the back. Will attempt to do so later this week. I was surprised to see that the seal runs against the coupling itself, not output shaft.
Also took the stuffing box off, as I need to push the cutlass bearing down/back. There were no locking pins to keep it in place so I guess it worked its way up a bit. The rubber part of the stuffing box seems to be in good shape. Is it wise to replace it at this point regardless? The boat is a 1990 and I suspect this is original equipment.
Thanks.
Reply With Quote Share with Facebook
  #5  
Old 03-28-2011
Junior Member
 
Join Date: Feb 2010
Location: Mobile, AL
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
bfloyd825 is on a distinguished road
The cutlass bearing on my Endeavour has 2 small set screws that hold it in. You may have to clean the strut some to find them.
__________________
Endeavour 32
Reply With Quote Share with Facebook
  #6  
Old 03-28-2011
Junior Member
 
Join Date: Jul 2009
Location: Mississauga
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
RLMToronto is on a distinguished road
The PS Crealock doesn't use a strut, it is a tube built into the structure, but the same idea. Mine currently has two holes for the set screws, but no set screws, and I can see the cutlass bearing up inside the tube about an inch. So I need to push it down from the inside using some 1" pvc tubing over the shaft. (As described in some other posts right here on Sailnet.)
Reply With Quote Share with Facebook
  #7  
Old 03-28-2011
casey1999's Avatar
Senior Member
 
Join Date: Oct 2010
Location: HI
Posts: 2,845
Thanks: 4
Thanked 17 Times in 17 Posts
Rep Power: 4
casey1999 is on a distinguished road
Yanmar V Drive

Would any of you know how the oil seal is arranged on a yanmar Kanzaki v-drive? I have the 3gmd. Looks like boat prop shaft goes through a hole in the transmission then attaches to the engine coupling. I cannot even understand how the rotation is transferred to the shaft let alone what type of oil seal there would be.
Thanks
Reply With Quote Share with Facebook
Reply


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
Yanmar 2GM Oil leak bclay3 Diesel 8 06-19-2010 09:25 PM
Yanmar 2GMF Transmission Oil? dacap06 Gear & Maintenance 4 04-19-2010 11:03 PM
Yanmar 3gm30 transmission olepedersen@yahoo.com Gear & Maintenance 7 10-06-2008 11:10 AM
yanmar transmission rbtpfe9 Gear & Maintenance 0 09-06-2005 10:46 AM
Yanmar oil leak rskaug Gear & Maintenance 0 01-04-2004 07:08 PM


All times are GMT -4. The time now is 05:32 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.