Kubota B7500 2WD to 4WD shift on the fly : Everything and Anything  -- General Tractor Discussions Discussion Forum and Review Kubota B7500 2WD to 4WD shift on the fly : Everything and Anything -- General Tractor Discussions Discussion Forum

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 08-23-2020, 12:11 Post: 199639
Gregone



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 Kubota B7500 2WD to 4WD shift on the fly

Hi this Kubota B7500 tractor is new to me.

The seller told me that I can shift from 2WD to 4WD while moving as long as the steering wheel is straight without using the clutch.

He said that is always the way he has done it with no issues.

He gave me the owners manual and it s says to always depress the clutch. I tried that would cause me to come to a stop disengage my MMM and really put a strain on the clutch plate.

Any advice appreciated.

Greg






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 09-17-2020, 10:44 Post: 199697
joyce1



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 Kubota B7500 2WD to 4WD shift on the fly

I am sure your manual says to depress the clutch when shifting from 2 to 4wd as that is the only way to be sure the gears will not grind.

It is not a clutch-less set up. But that said I think you may be able to do it without clutching as was described with wheels completely straight, carefully jiggling the level to 4wd. Any grinding STOP right away and go back to the manual way Laughing out loud !






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 09-17-2020, 13:15 Post: 199698
Murf



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 Kubota B7500 2WD to 4WD shift on the fly

I think this is one of those 'there's no right answer' questions.

First off, the dealers position, wheels straight & etc., is sound advice. The 'no clutch' part isn't wrong, the front axle / rear axle connection is after the clutch so as long as the wheels are turning the gears are doing the same things, regardless of clutch / no clutch.

The owners manual position, again, not wrong. The likely reason for that recommendation though is that there's a lead / lag in the front to rear axle gear ratios. The front axle spins 35 - 5% faster than the rear axle to prevent 'wallowing' while underway. The reduced load by depressing the clutch would reduce the load on the gears while shifting into / out of 4WD.

The clutch only needs to be depress for a second or two while shifting, there's no need to hold it down for long enough for the tractor or mower to come to a stop though.


Best of luck.






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