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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Prevent Steering Clutches from Sticking 350B

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JoelD

01-21-2007 12:25:24




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Hi all, First, thanks to everyone"s help and advice, my 350B is back up and running. The entire reverser has been rebuilt, spider, isolator, hydraulic housing, output shaft, coupling, pistons, all associated bearings and seals, etc. New water pump bearings, starter selenoid, fan belt, the works.
I started her up yesterday (10 degrees F), and moved her around. The right side, driver"s right side when sitting in seat, steering clutch stuck. I let the machine get to temp, the hydraulic fluid freed up and after applying the brake a few times (power brakes), the clutch finaly let go (with a clunk).
My question is, how do I prevent the clutches from sticking? I realize this is a dry clutch problem. I have the dozer (6-way blade) stored in a portable garage.
Is there anyway to prevent moisture? Any kind of spray or chemical? Also, how do I lubricate my finals? Having trouble finding the fill plugs.
Oh yeh, I rebuilt, from the bottom up, a tri-axle, tilt bed, beaver tail trailer. She loaded and hauled the dozer with eaze, my 1993 K2500 GMC pulled like a champ, I was proud of myself for hauling her home (my brother helped a lot too).
Any advice on the clutches is greatly appreciated.
Again, thanks,
Joel

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jdemaris

01-22-2007 05:37:21




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 Re: Prevent Steering Clutches from Sticking 350B in reply to JoelD, 01-21-2007 12:25:24  
The optional metallic steering clutch disks don't get stuck like the fiber disks (which doesn't help you now).
Leave your drain plugs out when storing - there's is one on each side. That - and tying back the steering clutch levers and it will be fine. Other companies, e.g. Allis Chalmers came out with self-venting drain plugs for the steering-clutch housings - but Deere never did. We'd sometimes have customers that took them out, and forgot, and then ran through a creek and got water into the clutches from the bottom up.
The point being - you don't want to run the crawler in wet areas with the plugs missing.

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JoelD

01-22-2007 16:56:52




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 Re: Prevent Steering Clutches from Sticking 350B in reply to jdemaris, 01-22-2007 05:37:21  
Thanks guys,
I'll tie back tonight, will start up again and let her warm up and move just to be sure.
Good question though on spring wear, I was wondering myself, would tie back decrease efficiency of springs over time.

I've seen the same recommendation on wheeled vehicles with clutches.
Thanks again,
Joel



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jdemaris

01-23-2007 05:45:59




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 Re: Prevent Steering Clutches from Sticking 350B in reply to JoelD, 01-22-2007 16:56:52  
There's a awful lot of other springs on the crawler that are under tension all the time - and they seem to last okay. For example, the hydraulic pressure-relief valve springs, the track-shock springs on each side, the engine oil-pressure relief valve spring, the three relief-valve springs in the reverser control valve, etc. etc. Clutch springs are under pressure all the time anyway. So are some of your engine-valve springs when it's running or not. If concerned, just tie back your levers part-way.

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Tigerhaze

01-24-2007 05:12:43




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 Re: Prevent Steering Clutches from Sticking 350B in reply to jdemaris, 01-23-2007 05:45:59  
Thanks for the response JDMaris- I guess I worry more about springs under tension as opposed to compression, but your point is well taken. I can't afford the downtime from stuck steering clutches, so I have already tied back my levers. Thanks for sharing that tip!



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JoelD

01-23-2007 15:03:20




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 Re: Prevent Steering Clutches from Sticking 350B in reply to jdemaris, 01-23-2007 05:45:59  
Good point jdemaris, particularly on the valve springs, never really thought about it.

Will tie back, again, I've seen this advice a number of times with tractors, i'll check, but I think my Kubota manual even references blocking the clutch pedal over pro-longed periods of storage.

Thanks for taking the time to respond,
Joel



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JD dozer mike

01-21-2007 15:50:39




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 Re: Prevent Steering Clutches from Sticking 350B in reply to JoelD, 01-21-2007 12:25:24  
you can tie or block the levers back when you dont plan to use it for a while.



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Tigerhaze

01-22-2007 07:30:53




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 Re: Prevent Steering Clutches from Sticking 350B in reply to JD dozer mike, 01-21-2007 15:50:39  
Does tying back the levers cause increased wear on the clutch springs or other clutch parts? I realize that probably is the less of two evils, but I was wondering if anyone has ever had a problem with spring wear due to tying back levers. Thanks.



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daveleeander

01-21-2007 12:48:55




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 Re: Prevent Steering Clutches from Sticking 350B in reply to JoelD, 01-21-2007 12:25:24  
If you've got fiber clutch discs, there's not much you're going to do to keep them from sticking if you can't keep moisture out of it.
After they get a little glaze, they'll do a little better. You did right with the brake warming up the housing. That usually works to free them.
Good luck, sounds like you put a lot in er.

Dave



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