Greenmech 19-28 arborist 2013

[Jase hutch]

44 minutes ago, Terjef said:

By the way, why would it help with the flywheel out? Seems like everything is done underneath.

It's just easier to get the shearbars out , clean up all the mating surfaces and check for any 'lips' when they are turned/replaced..

With a crane/hoist it's a quick and easy job to remove and replace the flywheel. 

Jase.

BTW, the blade to shearbar gap should be 2mm.

[Terjef]

New question.

How do I get to the lower shear bar nuts? I can see there are two holes from the engine side, but do I then need to remove the gas cylinder blocking those?

[Jase hutch]

25 minutes ago, Terjef said:

New question.

How do I get to the lower shear bar nuts? I can see there are two holes from the engine side, but do I then need to remove the gas cylinder blocking those?

Terjef,

If you remove the main drive belts by winding in the long 16mm bolt that protrudes from the side of the chipper you should be able to move the tension arm ro allow you to gain access to the bolts using a socket and extension. 

If the shock absorber needs removing it's a simple enough task,  you'll need two 9/16 AF spanners to slacken the nuts on either end , it's only a shock absorber so there's no pressure involved..

Jase.

[openspaceman]

2 hours ago, Jase hutch said:

you'll need two 9/16 AF

That takes me back when I started taking things apart

[PeteB]

44 minutes ago, openspaceman said:

That takes me back when I started taking things apart

14mm open spanner usually fits, as does a worn socket!

[Jase hutch]

Just a bit of a pisser with a 14 as it's a tight fit..

[openspaceman]

2 hours ago, PeteB said:

14mm open spanner usually fits, as does a worn socket!

So you have imperial AF bolts, how about Whitworth?

 

I keep a full set of Imperial spanners for my tractors.

[Jase hutch]

Terjef,  how did you get on ?

Jase.

[Terjef]

5 hours ago, Jase hutch said:

Terjef,  how did you get on ?

Jase.

Hi Jase,

 

I have just been messing a bit with it again. Unfortunately I just sheared of the head of the pusher bolt... It was winding off and the suddenly snapped. Must have been too much force. There is another nut at the end of the thread, locking. Was I supposed to have backed that off first?

Seems like it has never been taken off.

 

Do you have any ideas as to what to do? 

Edited April 9, 2020 by Terjef

[Jase hutch]

Oh no.....

Yes the plain nut is to lock the bolt tight.

You are referring to the 12mm bolt in the tapped block that's welded to the flywheel wrap ? (19 mm spanner size).

That's why I suggested soaking it in penetrating oil or heating it up..

Unfortunately if it is this then there's no easy solution,  you could try welding a nut to the sheared bolt if you can get in with a welder ? 

The heat alone from welding may be enough to free it off , otherwise the only real option is to cut off the block either with a gas torch or a grinder and weld a new block back on..

Jase.