Return to the home page...

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

Reply
 
Thread Tools Display Modes
  #1   IP: 66.126.90.242
Old 04-03-2008, 01:58 PM
Kurt Kurt is offline
Senior Member
 
Join Date: Jun 2007
Posts: 290
Thanks: 0
Thanked 1 Time in 1 Post
Solution to Chronic Water Pump Oil Seal Leak

Some of you may have read my previous posts concerning repeated water pump oil seal leaks. Basically, my 6 month old Oberdorfer raw water pump started seeping oil from the weep hole in the bottom of the pump housing. I completely rebuilt the pump (seals, shaft, impeller). After about 2 hours of engine operation, the oil seeping started again. I bought a Moyer Marine packless bearing pump, hoping that it's more robust design would solve the problem. It did for about 10 hours of engine operation - then the oil seal failed, and the oil seeping started again. Prior to the oil seal failing, I noticed that grease from the packless bearings was visible from the weep hole - not good. So, I started thinking about the assessory drive. I noticed that there was some clicking noise coming from the assessory drive area. I reasoned that if the assessory drive bearings were failing or severly worn out, enough play might exist to cause the water pump shaft to wobble and subsequently cause premature oil seal failure. Interesting to note that the water seal on the pumps (seal furthest from the assessory drive) never failed. I spoke to Don Moyer and he stated that Moyer Marine had no history of worn out assessory drives causing water pump oil seal failures. Well, I had worn out my options, so I purchased a rebuilt assessory drive from Moyer Marine. I also purchased a rebuild kit and new bearings for the Moyer Marine raw water pump and rebuilt it completely (very easy pump to rebuild, by the way). No more noise exists in the area of the assessory drive. And, the best part is that after approximately 10 hours of engine operation, the oil seal on the water pump has held up - no more seeping oil from the weep hole. I'm keeping my fingers crossed that I won't encounter water pump failure of the same type again. Just wanted to add this unusual scenario to the Moyer archives in case anyone else out there encounters a similarly frustrating scenario.
Reply With Quote
The Following User Says Thank You to Kurt For This Useful Post:
GregH (07-12-2019)
  #2   IP: 204.145.183.5
Old 04-04-2008, 09:44 AM
Don Moyer's Avatar
Don Moyer Don Moyer is offline
 
Join Date: Oct 2004
Posts: 2,785
Thanks: 0
Thanked 82 Times in 43 Posts
Thank you, Kurt, this is valuable information.

Don
Reply With Quote
  #3   IP: 173.67.45.252
Old 07-11-2019, 02:28 PM
RobH2's Avatar
RobH2 RobH2 is online now
Senior Member
 
Join Date: Dec 2009
Location: Baltimore, MD
Posts: 290
Thanks: 2
Thanked 4 Times in 2 Posts
Kurt, yes, thanks for this. I'm tracking down an oil leak myself. I leak about 1/2 qt per hour. I can't see around my engine because it's so tightly stuffed into a hole in my boat. I did work on the water pump this spring. I bought a new shaft and seals and replaced them but maybe something is wrong. I'll pull it and see what I can find.
__________________
Rob--

"Who is staring at the sea is already sailing a little."

1968 C&C Invader 36' / Late Model Atomic4
Reply With Quote
Old 07-13-2019, 07:34 PM
Marian Claire
This message has been deleted by Marian Claire.
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
Much much water in Atomic 4 seators Tartan 7 04-08-2009 03:10 PM
Raw water cooling pump - removing inner seal domagami Cooling System 14 01-28-2008 02:52 PM
Water pump leak Bryanbt Cooling System 1 10-03-2007 06:50 AM
Raw water pump leak GBlundell Cooling System 5 11-07-2006 03:20 PM
Much much water in Atomic 4 seators Cooling System 3 08-10-2006 03:31 PM


All times are GMT -4. The time now is 11:49 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2019 Moyer Marine Inc.

All Rights Reserved