MF 6180 PTO and Dynashift

A

ash768w

Member

• Jul 27, 2016

• #1

Hi all, I have recently purchased a 1997 6180 Dynashift.

In having an issue whereby occasionally (7 out of 10 times) when I disengage the PTO the gears jump to D through to The gear im in I.e b or a.

Has anyone experienced this before?

Thanks

 

D

deere66

Member

Location

York

• Jul 27, 2016

• #2

Not experienced it personally but if Dyna is shifting to D that would indicate a pressure loss. If it happens when you DISENGAGE then possibly PTO brake circuit has a leak.

 

MF-ANDY

Member

Location

s.e cambs

• Jul 27, 2016

• #3

Yes dynashift defaults to d without pressure or electric. Pto brake is behind top link bracket

 

A

ash768w

Member

• Jul 27, 2016

• #4

Ah so is the brake a solenoid behind the plate or is it hydraulic pressure? What sort of thing am I looking for?

 

A

ash768w

Member

• Jul 27, 2016

• #5

Also it selects D then goes C, B, A if I'm in A if not it will stop on what gear I'm in. It physically changes the gear

 

davedb

Member

Location

Staffordshire

• Jul 27, 2016

• #6

The solenoid will be on the Rh side of gearbox with a row of others you should be able to follow the little steel pipe that runs around to the top link bracket to find it, disconnect the electric to it and see if you problem goes away

 

A

ash768w

Member

• Jul 27, 2016

• #7

So let's just say the solenoid etc isn't the issue, would I remove the top link plate and check seals etc?

 

A

ash768w

Member

• Jul 28, 2016

• #8

I have disconnected the solenoid at the top of the row which the pipe seams to go to and still no different other than the Pto brake doesn't work. Uploaded a video of what happens even worth brake solenoid disconnected

 

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ash768w

Member

• Jul 28, 2016

• #9

Well I tried to anyway, not sure why it won't load them

 

Mur Huwcun

Member

Livestock Farmer

Location

North West Wales

• Jul 28, 2016

• #10

If you only move the pto switch back to the centre and not fully anticlockwise the PTO brake won't cone on anyhow. Does it still do it then? Does your 4wd work as it should? Try it with 4wd engaged. They can loose pressure in the drop box shaft due to worn sealing rings. Got a half feeling your tractor will be stuck in 4wd

 

A

ash768w

Member

• Jul 28, 2016

• #11

Hi. I have just checked and when I put in to the centre it still does it, the 4wd light also comes on when it does it. The Pto brake is still disconnected.

Any Ideas where I go from here?

 

A

ash768w

Member

• Jul 28, 2016

• #12

Also it still does it with 4wd engaged

 

Farmer mk1

Member

Arable Farmer

Location

Sheffield

• Jul 28, 2016

• #13

Ours is doing this but our pto won't start up then some times it starts up fine. Only does it when we try use th pto but it seems to be fine at the min. We put a new sensor switch on top of the filter housing.

 

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ash768w

Member

• Jul 28, 2016

• #14

What was the sensor switch for?

 

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ash768w

Member

• Jul 28, 2016

• #15

I have checked wires to the box under the cab floor, I can't find anything noticeable.

The expression is " banging my head up against a brick wall"

 

Mur Huwcun

Member

Livestock Farmer

Location

North West Wales

• Jul 28, 2016

• #16

It sounds more like a pressure issue rather than electric but funnier things have happened!!! There's a good earth bank by the step where the autotronic box is, remove and clean here sometimes cures or pinpoints to faults.

 

Farmer mk1

Member

Arable Farmer

Location

Sheffield

• Jul 28, 2016

• #17

I don't know what it was for but its on top of the filter housing and you get a kit to fit. It hasn't happened since. I prosume that if the sensor is faulty and thinks it is picking up on low pressure it will default to 4wd and d range and take the pto out for safety.

 

wdah/him

Member

Location

tyrone

• Jul 28, 2016

• #18

mine does that too. hasnt done it from i fitted a new key switch and the lights in the dash are brighter.

my lift arms dont work though, not even a light for telling me a code abut batter and leads are all good for red and yellow wire.

 

W

wasted years

Member

Location

Cumbrian born and bread

• Jul 28, 2016

• #19

wdah/him said:

mine does that too. hasnt done it from i fitted a new key switch and the lights in the dash are brighter.

my lift arms dont work though, not even a light for telling me a code abut batter and leads are all good for red and yellow wire.

Click to expand...

Check alternator, if wrong will stop lift arms working.
Un do multi pin plug into control console, there should be 3 lives grouped together,1 permanent,1 off ignition switch and 3rd when tractor starts.I had one with corroded wire behind console.

 

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ash768w

Member

• Jul 28, 2016

• #20

Are we saying try the key switch? My pto works so could it still be the sensor?