Alpine tractor - which make ?

[MattyF]

If it makes a difference I have to stand on my agts link arms if there is no implements weight on them. 

[Roger440]

Ok, i think ive got to the bottom of this now,

 

The middle and right hand levers both raise the hitch, clearly each using one ram only. 

 

The middle lever moves forward only to do this. It has no back position. The right hand lever however goes both ways. If you have it back AND have the 3 way valve in the correct position, then it will come down. Well sort of. You have to jump up and down on the arms to get them moving, though once moving, my weight will keep them moving. As it stands, that makes it a 2 man job.

 

Now that i get this, all appears to be in order. Which is good given the extensive work ive done to it. Still a few electrical issues to sort, and still  need to get the steering arrangement to slide and release, but thats for another day.

 

Thanks for all the suggestions and advice on this, to someone who a numpty when it comes to tractors, any tractors.

[Roger440]

 

Ok, im back again. 

 

Got thing to its new home, hung a big flail off the back of it to go mowing

 

Sadly, that did not go as planned.

 

It might be operator error, though i dont think so.

 

With the PTO engaged the only way i can get full drive to the flail is to pull hard on the left hand of the three levers in the first pic. It feels like it baulking. Without pressure there is "some" drive, more like its dragging.

 

However, according to the manual, i think, this levers changes the direction of the PTO? First problem is, it doesnt matter where i put it, nothing changes, certainly not the direction.

 

This lead to my next question. Im using the upper PTO. According to the 2nd pic below, this should go at engine crank speed. It doesnt. It seems to be running at 540 ish (when lever is pulled, cuts grass fine)

 

The lower PTO has never been used, but i couldnt try it as i have a cover on it, and no spanners to remove. Though it seems to do whatever the one above does.

 

So, am i not engaging something somewhere, or do i have a gear selection problem. Secondly, what is the second table telling me. What happens on the machine bears no resemblance to reality.

 

Any help greatly appreciated. If this is a gearbox apart job, ive got a major problem. There field to be cut, and its nowhere near a workshop now. 

 

 

[doobin]

You are dipping the clutch to engage pto aren’t you?? According to that manual the left lever is pto engagement, not speed selection. You have to dip clutch and engage it via the clutch as if you are changing gear. 

[dumper]

1 hour ago, doobin said:

You are dipping the clutch to engage pto aren’t you?? According to that manual the left lever is pto engagement, not speed selection. You have to dip clutch and engage it via the clutch as if you are changing gear. 

The pto on these has its own clutch,as an true alpine it would be dangerous to have to dip the clutch whilst working on a slope 

[doobin]

9 hours ago, dumper said:

The pto on these has its own clutch,as an true alpine it would be dangerous to have to dip the clutch whilst working on a slope 

Makes sense, so is the op pulling the clutch lever when he pulls that lever? Is that an independent clutch? 

 

My Antonio Carraro is a pedigree alpine, but you still have to dip the foot clutch to engage the pto. You just put your foot on the brakes. 

Edited May 3, 2023 by doobin

[dumper]

The clutch on the 7700 series is independent multi plate, 

[Roger440]

Thanks to the legend that is dumper, who generously gave me a chunk of his time on the phone, i think ive sorted it.

 

Basically, as above, the PTO has its own clutch. When i was pulling it, it "should" have been going over centre. It wasnt as it turns out,

 

Because the clutch had been massively over adjusted, there was insufficent movement which meant the over centre locks couldnt clear the hub and actually lock. After unwinding it most of the way, it now goes over centre and the lever locks in.

 

The clutch plates are visible and seem to have a resonable amount of friction lining, though i dont know what they look like new.

 

Again, big thanks to dumper.

 

Pic of test cut. Bit low, needs raising, but worked

 

 

[doobin]

Reverse drive and hydro transmission making light work of bracken control, max cut width each time and no wheelings left to spring back up. Some nasty side slopes coming up too. Perfect tractor for the job. 

[Roger440]

7 hours ago, doobin said:

Reverse drive and hydro transmission making light work of bracken control, max cut width each time and no wheelings left to spring back up. Some nasty side slopes coming up too. Perfect tractor for the job. 

 

Is that some sort of topper?