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Allis Chalmers Discussion Forum
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Flywheel cover leak???

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IowaPaul

11-17-2004 13:54:51




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First, thanks to all for your comments, tips, and insights throughout this forum.

Recently, I purchased a WD45 (serial number remarkably missing from the differential cover (replaced?) or near the rear left brake cover, but I digress). Last week, after filling the hydraulic reservoir with universal hydraulic oil, I noticed a mixture of fluids (hydraulic oil? plus motor oil? dirty water?) streaming out of a nearly imperceptible gap between the flywheel cover and the engine clutch. I threw a bucket underneath the leak and estimate that less than a pint of fluids drained, but it looked not-so-good. Quickly I shut the engine off and parked it for the night.

Since then I�ve been unable to reproduce the problem. Part of me shrugs, �Great. No leak � no problem,� but I�m afraid there�s a much larger problem around the corner. One I�d like to clearly avoid. I�ve reviewed the Operations Manual, Parts Manual, and the Service Manual yet nothing speaks directly to this issue. Since the engine clutch is the dry type (so I�ve read) should there exist any fluid in this space? There�s no gasket listed in the parts manual, and, honestly, I don�t think there�s supposed to be any fluid there. Is there a drain that has been clogged/sealed (painted orange)?

Your thoughts?

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RickL

11-18-2004 05:14:30




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-17-2004 13:54:51  
Iowa Paul; You said you now have a AC wd45, well just out of curiosity you wouldn't want a cultivator for that unit would you. I have one I want to get rid of but I really don't want to cut it up.



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IowaPaul

11-18-2004 08:15:45




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 Re: Flywheel cover leak??? in reply to RickL, 11-18-2004 05:14:30  
Thanks for the offer, Rick. I'm toying with the idea of sowing some grains, but it's still in the 'idea' stage. That said, what size and condition is your cultivator? Also, do you live in or near SE Iowa?



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RickL

11-18-2004 11:13:55




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-18-2004 08:15:45  
Me again I forgot I have a very nice belt pulley for your unit if that would help also,it looks like it has never been used.



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IowaPaul

11-19-2004 06:56:06




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 Re: Flywheel cover leak??? in reply to RickL, 11-18-2004 11:13:55  
I can't think of too many uses for a good ol' belt pulley other than bragging rights. Thanks.



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RickL

11-19-2004 07:27:59




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-19-2004 06:56:06  
I don't know exactly what that means,but anyway. One persons junk is anothers treasure as they say. Was just letting you know if that would help you out.



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IowaPaul

11-19-2004 09:40:46




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 Re: Flywheel cover leak??? in reply to RickL, 11-19-2004 07:27:59  
No offense Rick, I really don't need a belt pulley - that's what I meant. If I did have one, I would likely use it more as a conversation piece than a functional tool. I apologize if that came across otherwise. Thanks for the offer, and have a good day. Paul



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RickL

11-20-2004 00:27:31




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-19-2004 09:40:46  
not problem all I try to do is help people out that are looking for stuff,if I have it available I like to let them know. 95% of what I have to get rid of comes from others that comes in here. Happy thanksgiving Rick



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RickL

11-18-2004 11:11:59




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-18-2004 08:15:45  
its a two row unit its not bad shape,has rear gang and as far as I know I think its all laying here. I also have a very nice AC 66 combine if your grains become a reality,its nice always shedded. Yes live in southeast Iowa rural Winfield. Let me know want get driveway cleaned out before snow flys if can.



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wdTom

11-17-2004 17:17:07




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-17-2004 13:54:51  
The serial no. is on the back of the differential housing/casting on the machined area on the left side, not on a cover. You may have a bad seal on the front of the hydraulic systen. the shaft from the engine clutch goes to the hydraulic system on it's way back to the hand clutch. There is no fluid in the engine clutch housing. You can take the cover off of the bottom and reach in, maybe see in a little. You may have put in enough fluid that it was at the level of the seal, some leaked out past the seal until the level was below the seal? It can also leak back into the transmission/hand clutch area. You can tell if this is happening if it isn't leaking anywhere else and the hydraulic fluid level goes down and the transmission level goes up.

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IowaPaul

11-18-2004 07:00:30




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 Re: Flywheel cover leak??? in reply to wdTom, 11-17-2004 17:17:07  
Thanks Tom. Other than removing the four bolts is there any trick to removing the flywheel cover? I"ll take it off this weekend to see what I can see. I guess I"ll have to determine if the hydraulic oil level is okay/operable at a level below a worn/bad seal on the front of the hydraulic system, if said seal turns out to be the culprit.

Also, thanks for confirming that no fluid should exist in the engine clutch housing. I thought I read that if the clutch plate to absorbs oil/water/etc. it will make the clutch seem "grabby or jumpy", if my memory serves correctly. Is there supposed to be a drain to prevent liquid from collecting?

Thanks again. Paul

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wdTom

11-19-2004 18:49:53




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 Re: Flywheel cover leak??? in reply to IowaPaul, 11-18-2004 07:00:30  
I don't think there is any hidden bolts ,as I remember it anyway, that would keep you from removing the flywheel cover. Just behind it on teh bottom are 6 bolts that hold a cover on which you can remove too. You can't get into any trouble removing these covers, that's all they are is covers. Probably hydraulic fluid wouldn't get to the clutch unless the housing there wasn't "leaking" and it filled up. Fluid on the clutch can make it grabby or slip. It isn't made to be lubricated. I think that the hydraulic system will be OK if run a little low, youjust won't be able to extend rams all teh way maybe.You want to keep a good amount of oil in it though, even if not full as there are some cams and cam followers there and pump parts that all need to be lubricated as they run whenever the foot clutch is engaged. I don't remember if there is a real drain, or if fluid just leaks out of the covers where no gaskets are used. These covers are to keep dust, hay, mice, brush, etc. out of there, not to keep fluid in. If you don't havae a AC repair manual for the WD/WD45 I recomend you get a reprint of an AC manual, they are more complete than the ITT manuals, which cover many different tractor models. Let us know how it goes. Good luck.

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