This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately - ie one of us used it and didn't clean it out. Nor in hindsight did I pour some oil over the grinder wheel which would have been a good idea.

I've got the casing off and it's obviously the crusher grinder wheel where the problem is as I can move the motor fan 20 degrees or so quite freely, but the wheel is solid. There's an adjustable plate for the grinding and that's free ('ish!).

Any bright suggestions? There are 4 bolts holding on a plate carrying the grinder end bearing - releasing them has achieved nothing.

On Tuesday, 2 August 2016 18:08:36 UTC+1, Rob Graham wrote:
This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately - ie one of us used it and didn't clean it out. Nor in hindsight did I pour some oil over the grinder wheel which would have been a good idea.

I've got the casing off and it's obviously the crusher grinder wheel where the problem is as I can move the motor fan 20 degrees or so quite freely, but the wheel is solid. There's an adjustable plate for the grinding and that's free ('ish!).

Any bright suggestions?

yes, post a pic.


NT

There are 4 bolts holding on a plate carrying the grinder end bearing - releasing them has achieved nothing.

On 8/2/2016 7:24 PM, wrote:
On Tuesday, 2 August 2016 18:08:36 UTC+1, Rob Graham wrote:
This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately - ie one of us used it and didn't clean it out. Nor in hindsight did I pour some oil over the grinder wheel which would have been a good idea.

I've got the casing off and it's obviously the crusher grinder wheel where the problem is as I can move the motor fan 20 degrees or so quite freely, but the wheel is solid. There's an adjustable plate for the grinding and that's free ('ish!).

Any bright suggestions?

yes, post a pic.


NT

There are 4 bolts holding on a plate carrying the grinder end bearing - releasing them has achieved nothing.

In the absence of pictures, soak the seized metal bits with penetrating
oil (WD40 at a pinch). Ideally submerge them in oil for a few days.

newshound wrote:
On 8/2/2016 7:24 PM, wrote:
On Tuesday, 2 August 2016 18:08:36 UTC+1, Rob Graham wrote:
This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately -
ie one of us used it and didn't clean it out. Nor in hindsight did
I pour some oil over the grinder wheel which would have been a good
idea.

I've got the casing off and it's obviously the crusher grinder wheel
where the problem is as I can move the motor fan 20 degrees or so
quite freely, but the wheel is solid. There's an adjustable plate
for the grinding and that's free ('ish!).

Any bright suggestions?

yes, post a pic.


NT

There are 4 bolts holding on a plate carrying the grinder end
bearing - releasing them has achieved nothing.

In the absence of pictures, soak the seized metal bits with
penetrating oil (WD40 at a pinch). Ideally submerge them in oil for a
few days

I've had good results with Screwfix no nonsense penetrating
oil, easy to apply.

On Wednesday, August 3, 2016 at 4:44:52 PM UTC+1, Capitol wrote:
newshound wrote:
On 8/2/2016 7:24 PM, wrote:
On Tuesday, 2 August 2016 18:08:36 UTC+1, Rob Graham wrote:
This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately -
ie one of us used it and didn't clean it out. Nor in hindsight did
I pour some oil over the grinder wheel which would have been a good
idea.

I've got the casing off and it's obviously the crusher grinder wheel
where the problem is as I can move the motor fan 20 degrees or so
quite freely, but the wheel is solid. There's an adjustable plate
for the grinding and that's free ('ish!).

Any bright suggestions?

yes, post a pic.


NT

There are 4 bolts holding on a plate carrying the grinder end
bearing - releasing them has achieved nothing.

In the absence of pictures, soak the seized metal bits with
penetrating oil (WD40 at a pinch). Ideally submerge them in oil for a
few days

I've had good results with Screwfix no nonsense penetrating
oil, easy to apply.

Thanks for the suggestions, guys

The logic of soaking in penetrating oil suddenly struck home and a 5 litre plastic bottle was suitably cut and became home for the crushing end plus a quantity of CH oil which is just paraffin, and might well be what Screwfix's penetrating oil is.

Interestingly the motor plus gearbox, presumably epicyclic, plus the crushing box weigh over 40lbs.
Thanks again
Rob

On 8/5/2016 1:11 PM, Rob Graham wrote:
On Wednesday, August 3, 2016 at 4:44:52 PM UTC+1, Capitol wrote:
newshound wrote:
On 8/2/2016 7:24 PM, wrote:
On Tuesday, 2 August 2016 18:08:36 UTC+1, Rob Graham wrote:
This is one of the crusher type, rather than a spinning knife.

It failed to get appropriate maintenance last autumn unfortunately -
ie one of us used it and didn't clean it out. Nor in hindsight did
I pour some oil over the grinder wheel which would have been a good
idea.

I've got the casing off and it's obviously the crusher grinder wheel
where the problem is as I can move the motor fan 20 degrees or so
quite freely, but the wheel is solid. There's an adjustable plate
for the grinding and that's free ('ish!).

Any bright suggestions?

yes, post a pic.


NT

There are 4 bolts holding on a plate carrying the grinder end
bearing - releasing them has achieved nothing.

In the absence of pictures, soak the seized metal bits with
penetrating oil (WD40 at a pinch). Ideally submerge them in oil for a
few days

I've had good results with Screwfix no nonsense penetrating
oil, easy to apply.

Thanks for the suggestions, guys

The logic of soaking in penetrating oil suddenly struck home and a 5 litre plastic bottle was suitably cut and became home for the crushing end plus a quantity of CH oil which is just paraffin, and might well be what Screwfix's penetrating oil is.

Yes, perfectly reasonable choice if geometry dictates that you need a
few litres. Or diesel, if you don't have a source of CH oil. No reason
not to put the diesel back in the tank, after letting any dirt/rust
settle out, and/or run it through something like a coffee filter or a
couple of layers of kitchen towel in a funnel.


Interestingly the motor plus gearbox, presumably epicyclic, plus the crushing box weigh over 40lbs.
Thanks again
Rob