Mf 168 4x4 Runing away in high multipower: Massey Ferguson  -- Other Tractor Brands Discussion Forum and Review Mf 168 4x4 Runing away in high multipower: Massey Ferguson -- Other Tractor Brands Discussion Forum

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 06-10-2012, 18:45 Post: 183840
Cyrus55



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  Mf 168 4x4 Runing away in high multipower

I can understand the "running away" in low multipower. Multipower has an overrunning clutch in the gear train to allow the tractor to slow down gradually when downshifting without load. IH used the same principle in its Torque Amplifier.
I do not understand the run away in high range. Are you sure it was high range on the Multipower lever? The other range position does not matter.
Don't know about the front wheel assist, either.






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 06-27-2012, 08:36 Post: 184050
shona13



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  Mf 168 4x4 Runing away in high multipower

Hi
to check that indeed the multipower IS working select say second gear high range and driving up a slight hill first select low multi power and using the hand throttle set to a constant speed ,about 1400 rpm ,then select HIGH Multipower you should feel the transmission change ,similar to an automatic transmission in a car If not the multipower is NOT working.
With the engine STOPPED and standing on the left hand side facing the battery operate the multipower lever and watch the multipower linkage you will see a small shaft coming from inside the gearbox it is connected by a clamp loosen and move the bracket DOWN THE SHAFT THAT COMES FROM THE Multipower control lever just a little bit say two to three m.m retighten the clamp and try again , what you want to do is PUSH THE SHAFT COMING OUT OF THE GEARBOX FURTHER DOWN Remember just a little bit at a time if it still does not work the hydraulics will have to be checked using test gauges .
Thats it
Regards
Hutch.






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 06-27-2012, 15:12 Post: 184066
masseymad



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  Mf 168 4x4 Runing away in high multipower

Multipower is working but will not hold you back when in HI. And 4x4 will only work in low multipower.
THANKS

Edd






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 06-30-2012, 07:58 Post: 184095
shona13



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  Mf 168 4x4 Runing away in high multipower

G,Day massey mad ed.
You say running away,Give me an example of your understanding of "running away".
Is it say you are in third gear high range High Multipower going down a hill with a loaded trailer and the tractor increases in speed ???????????.
Hutch.






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 06-30-2012, 15:41 Post: 184101
masseymad



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  Mf 168 4x4 Runing away in high multipower

Hutch hi,
It doesnt matter if its 1 2 or 3 gear in high it still increases speed.Not to good for the blood pressure. Even worse with trailer behind.Had a look at lever and all seems ok so am know thinking of checking oil pressure and go from there.

Thanks again

Edd






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 07-01-2012, 09:10 Post: 184107
shona13



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  Mf 168 4x4 Runing away in high multipower

G,Day masseymad .
Let me ask ,if you drive along on a flat road /track say in low multipower and you change into HIGH multipower does the tractor speed increase and the engine reduce rpm like a manual transmission does?.
Hutch.






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 07-01-2012, 11:45 Post: 184110
masseymad



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  Mf 168 4x4 Runing away in high multipower

Most of the time the engine will reduce the speed of the tractor. But sometimes the engine speed will drop to 800 rmp and the tractor will speed up like I say with a trailer on a slope not good.
This is only in HI as LOW is just a reduction gear.
Hope this helps

Edd






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 07-02-2012, 09:25 Post: 184114
shona13



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  Mf 168 4x4 Runing away in high multipower

G.day masseymad .
The tractor is not going into HIGH Multipower,If you check what I said about adjusting the linkage in an earlier post you may find this helps.
Regards
Hutch.






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 07-02-2012, 16:07 Post: 184119
masseymad



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  Mf 168 4x4 Runing away in high multipower

Hutch hi,
As i said the multipower is working fine. Just sometimes it wont hold the tractor back in HIGH as it should

Edd






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 07-03-2012, 09:06 Post: 184129
shona13



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  Mf 168 4x4 Runing away in high multipower

Hi Masseymad .
The first thing to check is the multipower pump pressure to do this requires a test manifold which could cost a lot of money,
Your local massey dealer may be able to help.

To remove the multipower pump requires the tractor to be split between the gearbox and the differential housing ,also the hydraulic top lift cover has to be removed,This is quite a big job and requires proper equipment to carry out safely
The other thing is the multipower clutch pack but going on your information it works sometimes and not others normally if the clutch pack is worn out it will shudder and slip, it wont work one minute and not the next??.

Thats all .
Hutch.






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Discussion Boards > Active Subjects > Messages as Posted > Massey Ferguson Forum

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