Gm220 blocks up with leylandii.

[Mick Dempsey]

2007. So not that old.

[White Noise]

Has it been raining ? This can cause a problem from time to time

Edited August 5, 2015 by White Noise

[White Noise]

Conifers are very dense maybe a 4" elm would go straight through your machine ..... but a piece of 4" Conifer with all the green waste attached to it would and could present the equivalent of a 7 or 8 inch limb ? Just saying

[Mick Dempsey]

Conifers are very dense maybe a 4" elm would go straight through your machine ..... but a piece of 4" Conifer with all the green waste attached to it would and could present the equivalent of a 7 or 8 inch limb ? Just saying

 

Understood, but remember, I've been feeding all sorts of chippers for 20 odd years.

This is not normal.

[aspenarb]

If its a very early 220 the gap between the flywheel paddles and the housing was wider than it should have been. Cured by welding flat plate on each paddle ( cut three pieces exactly the same so you don't knock the balance out) leaving clearance of 5-6mm. You can check the clearance by sticking a magnet on each paddle in turn and rotating the flywheel by hand.

 

Bang on there Old Hand. Thats where the problem was with our TW`s. They had lost a bit of blow through worn vanes and could not shift conifer unless the revs were on max and it was fed in slowly. New vanes sorted it. Worth checking out Mick.

 

Bob

[Mick Dempsey]

These vanes/fans are steel though, not the ally ones that TW used.

[aspenarb]

These vanes/fans are steel though, not the ally ones that TW used.

 

Still worth a look Mick, our dosco has steel vanes , they are shouldered and worn

 

Bob

[Mick Dempsey]

I'll check it out.

Thanks.

[White Noise]

Understood, but remember, I've been feeding all sorts of chippers for 20 odd years.

This is not normal.

 

Cool ..... if that's the case further investigation is required ? Often our machine has been blocked by wet conifer . Although trying to enlighten the lads with regards to a proper cleaning out of the flywheel housing and chipper chute still falls on deaf ears ? It still amazes me that a little twig / stick can block a 6 / 9 " machine lol

[Mick Dempsey]

I went for a walk with the dog at lunchtime once, left the two lads to chip up some birch with the TW. Heard it not starting from a couple of hundred yards away.

But he time I got back they said "chipper won't start" completely clogged up, of course it does not have a clutch it was no surprise when the bearings let go a day or so later. Maybe coincidence, maybe not.

I am amazed at how little really basic mechanical savvy some youngsters have, I'm not by any means mechanical, but some have no idea how the thing works at all.