Fitting Lewis 220 backactor to 17hp compact tractor

Nibley

Member
Horticulture
So I'm looking at the (discontinued) Lewis 220 backactor. There doesn't seem to be a manual or any definitive information about it online. It seems to sit between their 1xx and 3xx range, but it'd not exactly clear where.

I've variously seen it advertised as suitable for 15hp+ 20hp+ 25hp+

I don't think the weight will be a problem, but what happens if it is indeed rated for 20 or even 25hp and I put it on my little 17hp?

Does it stress the engine? Or is it just a bit 'weak' compared to how it should be?

Here's the current range: https://990e6c57-00bb-4b42-8429-77a...d/5ad572_c59d1c123c6b4312a331fc0583a49876.pdf
 

Nibley

Member
Horticulture
Maybe it would help if I restated it;

What happens if you use PTO attachments rated higher than your tractor? Slowness or bad things?
 

Dave W

Member
Location
chesterfield
It's simple. If you don't have enough hp to power the machine it will either not operate correctly or in this case stall the tractor.
On a digger the Max hp required will be to blow the relief valve. In other words of there's not enough hp it will stall the tractor every time you dead end a ram
My other concern would be overall weight
 

Nibley

Member
Horticulture
Thanks that's helpful, I guess I'll contact Lewis directly and try and get a definitive answer as to the rating of the 220.
 

Dave W

Member
Location
chesterfield
If the digger has the proper subframe then you should stand a chance.
If it's just linkage mounted with stabilisers too top link then I think you'll struggle
 

Nibley

Member
Horticulture
If the digger has the proper subframe then you should stand a chance.
If it's just linkage mounted with stabilisers too top link then I think you'll struggle

It has a subframe, just worried about stressing the (tiny!) 17hp engine/ tranny.
 

Wisconsonian

Member
Trade
I wouldn't be so concerned about the HP, if this is a PTO pump then the pump is probably still within the power of the tractor, if it's not, then lower the relief valve adjustment until the engine has no excessive lugging. not likely to need that though.

The bigger issue is the light weight of the tractor, it will get thrown around by the movement and won't have much force to do much with it. Especially if you have to lower the relief to get it to run. But if it fits the jobs you have in mind, it should work fine.
 

LIVE - DEFRA SFI Janet Hughes “ask me anything” 19:00-20:00 20th September (Today)

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Hello, I’m Janet Hughes. I’m the Programme Director for the Future Farming and Countryside Programme in Defra – the programme that’s phasing out the Common Agricultural Policy and introducing new schemes and services for farmers.



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