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Old 04-01-2014, 22:24   #16
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Join Date: May 2006
Location: Queensland, Australia
Boat: Maxim 38 ft catamaran
Posts: 242
Re: Sd50 saildrive oilchange

Quote:
Originally Posted by DavefromNZ View Post
I did a run today to try to figure out the problem. I found that the oil level started at 1/3 dipstick and quickly went to over the top of the dipstick and was very frothy (no not a sea water leak). So I lowered the level and ran for a short time with the dipstick out to try to get the air out. I then ran with the dipstick screwed in and the level remained steady at 1/2 dipstick.

First run had no leaks so I thought I had solved the pressure problem. However there was a small leak after returning to the marina. I think a bit better now however I would still like to have the seal replaced again but the yanmar dealer can't now do it before I leave for a 2000nm trip in a week. I will try another dealer.

Anyone know if the SD50 needs pressure? I.e can I leave the dipstick a bit loose to relieve pressure rather than it leaking at the pinion shaft seal?
Lots of info. on previous posts-I have replaced the dipstick with screw in cap coupled to a small length of garden hose so there is no pressure build up as the oil heats up and expands then contracts on cooling.
Nearing 5000 hrs on each leg and all is good.
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Old 05-01-2014, 18:17   #17
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Join Date: Oct 2012
Location: Home for a couple of years.
Boat: Beneteau 49
Posts: 246
Re: Sd50 saildrive oilchange

Quote:
Originally Posted by Jacana View Post
Lots of info. on previous posts-I have replaced the dipstick with screw in cap coupled to a small length of garden hose so there is no pressure build up as the oil heats up and expands then contracts on cooling.
Nearing 5000 hrs on each leg and all is good.
Can you give us some info/pictures on what you did/have?
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