Alpine tractor - which make ?

[doobin]

1 hour ago, Roger440 said:

 

Is that some sort of topper?

 

Yeah just a 6’ single rotor jobby

[david lawrence]

Is it a standard rear mount topper and does it just run ‘backwards ‘

or can you reverse the pto in some way ?

 

 

[dumper]

16 minutes ago, david lawrence said:

Is it a standard rear mount topper and does it just run ‘backwards ‘

or can you reverse the pto in some way ?

 

 

The pto runs the same way it just cuts on the opposite side of the mower ie if going foreward it cut at three o’clock in reverse it cuts at nine

[doobin]

1 hour ago, dumper said:

The pto runs the same way it just cuts on the opposite side of the mower ie if going foreward it cut at three o’clock in reverse it cuts at nine

Exactly. It works with any topper as it spins on a vertical axis. A flail mower wouldn’t feed correctly unless it was a reverse mount one. 

[Roger440]

Im back again.

 

So after a good few hours of operation, i could no longer disengage the clutch. It also developed a loud rattle at idle from that area.

 

After a bit of a battle, if split the engine away. Clutch is fine.

 

There is a shaft inside a shaft. They are locked together. The leading spline is engaged to the crank, so spins all the time. The second spline engages in the clutch plate. That they are locked together effectively renders the clutch inoperative. 

 

You can wiggle the leading spline seperate to the second a touch, but they ritate together.

 

The parts diagram, handily, omits some of this, only showing one of the 2 shafts, so im at a loss as to what they do, or what they operate.

 

Theres also a plastic ring between the 2 splines which is loose and rattles around.

 

Any ideas on this? Am i missing something obvious?

 

[htb]

The smaller internal one will be the PTO shaft so you can have PTO going independant of forward / reverse motion, known as live PTO. Check in back of the crankshaft/flywheel there should be a phosphor bronze bush or a bearing to support the nose of the PTO shaft, that may be worn.

[Roger440]

14 minutes ago, htb said:

The smaller internal one will be the PTO shaft so you can have PTO going independant of forward / reverse motion, known as live PTO. Check in back of the crankshaft/flywheel there should be a phosphor bronze bush or a bearing to support the nose of the PTO shaft, that may be worn.

 

I did wonder. But why would they be locked together?

 

There no bush of any sort in the end of the crank. Sadly, as usual, the parts diagrams dosent show the back of the engine/flywheel. But the shaft its into a sprung plate, like a clutch plate, thats bolted direct to the crank. So its supported anyway.

 

Obviously, if it does need one, and its not there, ive probably destroyed the front gearbox.

 

[Roger440]

An update for those interested.

 

My unwell tractor has now been sick all over the floor. Engine off first, then into the rear gearbox. Problem not there so had to split the tractor.

 

The two input shafts pass through the front box/diff. The rear end of the inner PTO shaft runs on a needle roller bearing. Sadly, this is outside the lubricated area so is completely reliant on the grease on it when installed. A dumb idea to say the least. Its clear while stored, rust has crept into it. 10 hours use later its disintegrated. Shaft has pitting and a score mark on it

 

All stripped out. Need to get some parts.

 

Did i mention its a dumb design? No easy way that i can see to make it lubricatable.

[doobin]

I’m so impressed with the slopes this little thing will handle. 

[IronMike]

 

 

I've had the tractor with winch on and Logbullet combo out lately on some steeper terrain. As usual, the photos and video dont do it justice, it's was damn near 1:1 in places! Hard work when felling, but super satisfying to send trees down the hill side. 

 

Only downside was having a 50m cable on the winch, as we regularly ran out of reach. Checked with Jas P Wilson's and the Igland will take upto to 77m at 10mm, but I'm guessi g the play off is reduced overall pulling power plus hauling that off the drum and up hill would be a hell of a slog. Spoke to a few folks who suggested getting an extension for these more awkward jobs, either cable or some dyneema perhaps?