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Discussion Forum
:

Clutch not disengaging

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J.Vasil

08-04-2002 21:34:01




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I own a model 5020 Allis, Toyosha diesel. The clutch will not disengaged when depressed. The adjustment is fully extended and the linkage is working fine. I would appreciate any advice on how to diagnose this situation , whether a repair is possible or replacement is required. Thanks much.




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shoe

08-05-2002 20:46:37




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
Don't want to put bad thoughts in your mind but it
could be that the hub in the clutch disc has broken out. If this was the case it would be en-
gaged all the time and would not disengage. Hope
for your sake it's just the disc froze to the pressure plate and you can bust it loose without
spliting the tractor.



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Craig MO

08-07-2002 16:56:13




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 Re: Re: Clutch not disengaging in reply to shoe, 08-05-2002 20:46:37  
If the center of the clutch is broken out the tractor won't move at all because there is nothing to drive the transmission.



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bcPA

08-05-2002 20:31:43




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
I would jack the tractors one rear wheel up off the ground, then block the other rear wheel so it wond roll of the jack. Next put it in gear before starting, then start it up with the clutch pedal pushed down. The one rear wheel will probably be turning even thou the clutch is in. while giving enough throtle so it wont stall apply the brake on the side up in the air. Carefully tap the brake a little at a time till it finally breaks the clutch loose. My super major loader had the same problem. wifes 86 year old aunt said with clutch in to run it into a bank of dirt to free up stuck clutch. It worked. good luck from bc.

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Craig MO

08-05-2002 14:44:40




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
Your clutch could be stuck to the flywheel or pressure plate. If you have good brakes hold clutch pedal down in as high a gear as you can and hit the brakes to make it come loose. If this does'nt work it could be the throw out bearing has froze and went through the fingers on the pressure plate. If you can't break it loose or bearing is locked up you will need to split to get to the problem. It has a dry clutch so if it sets for extended periods put a 1"or2" block of wood between clutch pedal and platform to prevent problem of clutch sticking.

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RMD

08-05-2002 09:14:54




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
I wouldn't go spliting the tractor just yet. A lot of tractors have a problem with the clutch plates sticking together, especially when the tractor isn't used often. I had a Ford that would have a struck clutch after sitting only a few days. Often you can break it loose by starting the tractor, slipping it into gear at idle, then driving around while applying the brakes. Often the shock of slipping it into gear will break the clutch free.

If there is any kind of inspection plate or access hole you can also try tapping on the clutch with a hammer and pin. This worked on my D12 which had a stuck clutch when I first got it.

If you have frequent re-occurance of this problem, you may want to use some sort of blocking on the clutch pedal so that the clutch is disengage when parked.

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J.Vasil

08-05-2002 06:57:55




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
Yes, I thought of the clutch being hydraulic, even changed the trans. oil. If there is a master cylinder, I have not seen it. I would believe that the clutch is mechanical.



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JMS/MN

08-04-2002 21:42:19




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 Re: Clutch not disengaging in reply to J.Vasil, 08-04-2002 21:34:01  
Sounds like your clutch plates are shot or the throwout bearing is bad. Tractor split is on the agenda.



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JMS/MN

08-04-2002 21:44:16




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 Re: Re: Clutch not disengaging in reply to JMS/MN, 08-04-2002 21:42:19  
Comment assumes the 5020 is an all-mechanical, not hydraulic clutch, where the master cylinder could be at fault.



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