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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Shifting Gears - MF65 and TO-35

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Jeff-oh

10-16-2006 07:45:52




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The manuals for these tractor say to only shift gears when stopped. Is there an issue with shifting when moving? When road traveling I have started in Hi-1st to get going then shifted up to Hi-3rd to travel. I do not grind the gears in doing this. The little cartoon in the manual seems to suggest that gear grinding is the main concern.

Some insite is appreciated.

Jeff




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Joe Ferguson

10-16-2006 19:59:08




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 Re: Shifting Gears - MF65 and TO-35 in reply to Jeff-oh, 10-16-2006 07:45:52  
Hi

These transmissions were not designed to permit shift on the go. But...the 1-2-3 in the high
range may be shifted on the go on the road and easyer when a foot throttle is installed. It is a matter of engine RPM and tractor rolling speed. Same as big trucks with non-synchronized transmissions. A person who never driven a non sync transmission will not be able to drive such vehicle it is a matter of training.

It is hard on the clutch to start in the third
gear with a heavy load behind.

We have same MF tractors here for 45 years and shift 1-2-3 (high range)up and down shift
on the go with no gear grinding at all and never had defective transmissions.

But if you dont know how:
dont...dont...dont...
you risk expensive repairs.

Just my 2�

Joe Ferguson

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DavidP, South Wales

10-17-2006 06:17:01




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 Re: Shifting Gears - MF65 and TO-35 in reply to Joe Ferguson, 10-16-2006 19:59:08  
Hi Joe,
I absolutely agree with you, changing on the move is a great pleasure, even better if you can do it without the clutch. A foot throttle is essential though!

Man and machine in perfect harmony!!!!

DavidP



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Cosmo

10-16-2006 17:33:50




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 Re: Shifting Gears - MF65 and TO-35 in reply to Jeff-oh, 10-16-2006 07:45:52  
I never start in third gear. Most times I start in second and immediately shift to third with minimum rpm. I don't grind the gears and I think as long as I don't there's no harm. I do however think slipping the clutch is bad. Maybe it's six of one and a half-dozen of the other. Cosmo



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Huw from West Wales

10-16-2006 11:37:33




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 Re: Shifting Gears - MF65 and TO-35 in reply to Jeff-oh, 10-16-2006 07:45:52  
I find it easy to shift the gears on a non syncro Massey Ferguson gearbox by double clutching , does not seem to harm anything and you get a good fast clash free change this way.



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Gerald J.

10-16-2006 10:26:34




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 Re: Shifting Gears - MF65 and TO-35 in reply to Jeff-oh, 10-16-2006 07:45:52  
When you shift gears in these transmissions you really slide gears in and out of mesh. There are no syncronizers or clutches like in a modern automotive transmission made for shifting on the go.

Its really easy to grind the gears trying to shift a tractor on the go and that rounds off the ends of the teeth which eventually leads to transmissions that jump of of gear under load.

Tractor transmissions are not made for shifting on the go. You won't improve the transmission doing it. So don't.

Gerald J.

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