Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > Troubleshooting

Reply
 
Thread Tools Display Modes
  #1   IP: 99.203.54.58
Old 08-06-2019, 05:28 PM
nesdon's Avatar
nesdon nesdon is offline
Senior Member
 
Join Date: Aug 2019
Posts: 10
Thanks: 0
Thanked 3 Times in 3 Posts
Leaking rear seal

I bought an early Tartan 30 with its original A4. The bilge was very oily, and after topping off the oil, found it running down the rear flange. Obviously need a rear seal, but also have a growl when in gear, likely the rear bearing.

The slop from bad bearings often lead to bad seals, and given how low the oil is in the gearbox, a bad seal might lower the oil enough to kill the bearing. So I’m planning to pull the rear cover and replace the seal and bearing. Anyone have any tips or warnings? Im a very experienced auto mechanic but never been inside and A4, though have fought with the fuel system a few times.
Reply With Quote
The Following User Says Thank You to nesdon For This Useful Post:
thatch (08-07-2019)
  #2   IP: 24.53.89.131
Old 08-07-2019, 06:43 AM
Peter's Avatar
Peter Peter is online now
Senior Member
 
Join Date: Jul 2016
Location: Nova Scotia, Canada
Posts: 266
Thanks: 114
Thanked 121 Times in 86 Posts
nesdon,

I had a leaking rear seal and it was noisy in gear. Replaced seal and bearing and I was amazed how quite it became.

I found this resource to be incredibly useful - link is to Windows version - there is also a Mac version.

https://moyermarine.com/product/vide...s_clip_01_568/

Before ordering parts you may want to get things apart - if the output coupling is not in good shape it can also lead to deterioration of the seal.

Good luck with the job.

Peter

Last edited by Peter; 08-07-2019 at 06:45 AM.
Reply With Quote
The Following 2 Users Say Thank You to Peter For This Useful Post:
Administrator (08-07-2019), thatch (08-07-2019)
  #3   IP: 68.129.90.42
Old 08-07-2019, 11:00 AM
nesdon's Avatar
nesdon nesdon is offline
Senior Member
 
Join Date: Aug 2019
Posts: 10
Thanks: 0
Thanked 3 Times in 3 Posts
Thanks for the tip. I purchased and watched the video. I was a little disappointed that there was no mention of the second bearing visible inside behind the output bearing, but I'm going to assume that my repair will follow this common fault case.

I will hold off on getting parts until I have the flange in hand and can decide if it needs to be replaced, meaning I'll probably wait until I'm on the hard for the winter before attempting.

One great thing about the Tartan is the engine access. It's placed amidships under a large cover so that the gear box is completely exposed. The prop is also directly behind the keel, so I expected I could undo the coupling and slide the shaft back more than enough to remove the flange even while afloat. But I think I'll wait for winter and live with the oil leak for the rest of the season. Then I can pull the shaft, check the cutless and san pedro tube, and make it a whole reconditioning of the drive.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear shaft oil seal replacement Gari Tartan 18 11-07-2013 02:59 PM
Real Oil Seal Leaking Rick_Powers Drive Train / Propellers 2 12-29-2008 08:15 PM
Oil Pressure / Rear oil seal - Next step Mark Harrington Drive Train / Propellers 6 11-24-2008 08:51 AM
Rear oil seal leak Marian Claire Overhaul 2 08-30-2008 09:07 AM
rear oil seal jamiec&c30 General Interest 1 04-12-2007 07:24 AM


All times are GMT -4. The time now is 04:29 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2021 Moyer Marine Inc.

All Rights Reserved