Removing predator 450 cutter pulley?

[tim361]

Currently trying to swap the predator 450  cutting head over to a new multi tip wheel. Anyone have any advise to get the pulley off that connects to the cutting head shaft. It’s a keyed pulley so put a puller on it and managed to crack the edges off the pulley and it won’t budge. 
Ran out of daylight/enthusiasm so will carry on tomorrow and try again

[Ian C]

Most likely on a taper lock so simply pulling is actually tightening it! The pulley will want tapping inwards to break the taper lock.

[openspaceman]

1 hour ago, Ian C said:

The pulley will want tapping inwards to break the taper lock.

Ordinary taperlocs have two blind holes with a half thread into which a bolt can be screwed to drive the pulley off the taper.

 

A picture would be handy @tim361

[tim361]

[openspaceman]

It's a single piece rather than taperloc. I would have expected to find a grub screw on one of the shoulders but otherwise I'm not familiar with this, sorry.

[swinny]

A green predator?

 

That looks a solid pulley on a square key way..... I would say that you need the puller back on that and something to stop your puller damaging the threads on the shaft. 

[tim361]

It’s a Laski stump grinder branded as a Major (the tractor implements) stump

grinder. Identical to a Predator 450. 
 

The threads are set a long way back in the shaft so can’t damage them. The puller is breaking/cracking the edges off the pulley and not shifting. I’ve resorted to taking the flywheel assembly and guard off as one and will take it to a mate with a hydraulic press. 

[PeteB]

Hydraulic press, go for it! May have to apply a little heat to the pulley too.

[wicklamulla]

On 28/01/2020 at 21:46, tim361 said:

It’s a Laski stump grinder branded as a Major (the tractor implements) stump

grinder. Identical to a Predator 450. 
 

The threads are set a long way back in the shaft so can’t damage them. The puller is breaking/cracking the edges off the pulley and not shifting. I’ve resorted to taking the flywheel assembly and guard off as one and will take it to a mate with a hydraulic press. 

is it possible to orientate the puller legs so as they slot through the round holes on that pulley rather than the outer edges?  May not be an even application of pulling force though and i guess yer mate will have pressed it off by now!

[PeteB]

Think that is how I did one at GreenMech. Puller through the pulley to the back of the boss, suitable nose on the puller thread to prevent damage and it eased off quite easily. Loads of meat on the shaft/ boss while not much and possible flex on the outer ring.