336D Powershift transmission issue

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wisemanx2004
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336D Powershift transmission issue

Postby wisemanx2004 » Wed Jun 21, 2017 10:30 am

I have a mid 80's Yanmar 336d. Wonderful machine until an issue yesterday. I was moving dirt and everything was working fantastic. I took a lunch break and when I returned to the machine, started it up, put the powershift in 1st gear, let out the clutch and got a grinding noise in the range shift area. It doesn't appear to matter which gear I'm in, even neutral, on the range shift or the power shift? WHen I let out the clutch, I get the grinding noise, like when you shift into gear on a truck or older manual vehicle, and do not quite have the clutch completely depressed. The part which really confused me, is if the power shift and range shift are both in neutral, why would it grind when I release the clutch. I've changed all the filters, oil and cleaned the screen about 30 hours ago. I had no indication prior to stopping for lunch? No clutch slippage, gears all worked properly. Any suggestions to troubleshoot would be GRATEFULLY appreciated. Thank You in advance!

Aaron
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Re: 336D Powershift transmission issue

Postby Aaron » Wed Jun 21, 2017 10:44 am

Is it possible that your PTO has slipped partially into gear? Does the tractor still move in gear?

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Wed Jun 21, 2017 11:43 am

Thanks Aaron for asking. PTO is in neutral, tractor does not move when put in gear, just a grinding sound.

Aaron
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Re: 336D Powershift transmission issue

Postby Aaron » Wed Jun 21, 2017 11:47 am

If you put the PTO in gear does it spin under a load? If not I bet it is this:
http://www.hoyetractor.com/PROD/SC-2522.htm

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Wed Jun 21, 2017 12:35 pm

Thanks Aaron....I do not have a mower deck to put it under load. The link you provided is for a spline coupler, how will that fix the issue?

Thanks Aaron

winston
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Re: 336D Powershift transmission issue

Postby winston » Wed Jun 21, 2017 5:16 pm

The splines sometimes shear. Try listening with a mechanics stethescope or large screwdriver right in front of the transmission housing or at the rear of the bell housing. That is where the coupling is located.

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Thu Jun 22, 2017 11:32 am

Ok, I'll get that done....

Thanks Aaron

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Thu Jun 22, 2017 11:33 am

Aaron, can this tractor be towed with a chain? Or will that damage something else?

Norm
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Re: 336D Powershift transmission issue

Postby Norm » Sat Jun 24, 2017 7:56 pm

Yes, just keep the clutch locked down and everything in neutral and it should pull just fine. I'm guessing it is that coupler also.

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Mon Jun 26, 2017 2:47 pm

Thanks Norm, I appreciate your input.

Does the tractor need to be split to change out the coupler?

winston
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Re: 336D Powershift transmission issue

Postby winston » Mon Jun 26, 2017 5:12 pm

Yes

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Tue Jun 27, 2017 6:19 pm

Thanks Winston!

Is there any other location to find yanmar parts?

winston
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Re: 336D Powershift transmission issue

Postby winston » Wed Jun 28, 2017 5:01 am

wisemanx2004 wrote:Thanks Winston!

Is there any other location to find yanmar parts?


Yes, but I don't think it would be fair to list them here. You can google although you will find this is the best sight for parts.

wisemanx2004
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Re: 336D Powershift transmission issue

Postby wisemanx2004 » Wed Jun 28, 2017 5:32 pm

Thanks, I wasn't trying to offend Hoye....They are fantastic to work with and I've enjoyed doing business with them over the years. I've been buying parts from them for over 10 years. I was just wondering if that coupler may be available somewhere else since Hoye has it on backorder. I'm just on a time constraint and need to get this tractor up and running. I hate to tear it down if I can't get the part?

winston
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Re: 336D Powershift transmission issue

Postby winston » Wed Jun 28, 2017 6:04 pm

For what it is worth I think the part number is 194110-25220 https://www.southernfarmequipmentimport ... or-splined


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