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Old 01-21-2016, 06:05 PM   #21
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An early sign of failure is a very fine line of oil appearing on fixed surrounding areas,spun off the spinning drive
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Old 01-21-2016, 06:20 PM   #22
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Transmission Leak

Hey Bruce,

At first, that's exactly how I noticed the leak. Oil that had been spun off the shaft or flange had sprayed around the bilge, hoses and stringer.
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Old 01-25-2016, 12:32 AM   #23
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Thanks everyone for your comments and feedback. As always, much appreciated.
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Old 01-25-2016, 09:35 AM   #24
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If you plan to use silicone [] or any sealant the surfaces and threads must be hospital clean.
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Old 01-25-2016, 01:02 PM   #25
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Perfect timing on this thread... last week the neighbor invited me for a boat ride. Prior to leaving he raised the hatch to check the fluid levels and look in the bilge. There was a sheen of oil down there. Checking confirmed it was transmission fluid.

Pink equals tranny fluid.

In any event he looked at the situation, spotting some wires back by the shaft. When I volunteered a fresh set of eyes he agreed.

This is what I saw:



I recognized this having seen it before. On that boat the shaft was darn near removed from the boat by the wires.

So, we removed the wires and then refilled the tranny. The next day, this:


We ran the engine. She shifted into and out of gear a-okay. There was no transmission fluid on the diaper after running. Still there was that drip and the owner wanted to make sure all was well re the wires/drip, etc.

Well, it's been a week and all the ATF has drained out. We've got a leak. My expertise ended at removing the wires. The drip (I can feel it) appears to be coming from where the shaft enters the transmission. The white transmission has fresh AFT on it.

Here's a better picture of the mess before wire removal:


So, what's next? Remove the coupler? Then? And thanks!
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Old 01-25-2016, 02:09 PM   #26
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Looks like a Hurth/ZF 630 or 800. I don't know if coupling comes off the end of the shaft allowing access to the seal. I'll go see if I can find out.

Edit: Looks like a central bolt holds the flange on, so pull out the bolt and use a puller to take off flange. The seal can be replaced in situ. Bolt is 74ft lb.
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