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Hydraulics for a post knocker attachment
Posted: Tue Aug 27, 2013 3:04 pm
by MBeattie
Hi, excuse me if I am being a little thick here, but I have quite a bit of fencing to do, so thought about buying a post knocker to drive in the fence posts. Then I started to think how the hydraulics would connect to operate the raising of the post knocker weight ? On my Major I only have the standard auxiliary connection that runs off the control valve that operates the lift arms, which would not work for a post knocker ? So how can I attach a post knocker ?
Re: Hydraulics for a post knocker attachment
Posted: Wed Aug 28, 2013 7:37 am
by chriss
I did try this on rusty put extra spool valve on and used a parmiter post knocker with new ram on but every time it lifted the weight the relief valve opened yet with a set of forks on the back it will pick up nearly 1 ton
Re: Hydraulics for a post knocker attachment
Posted: Wed Aug 28, 2013 2:16 pm
by MBeattie
Do you know where I can get a spool valve ?
Re: Hydraulics for a post knocker attachment
Posted: Wed Aug 28, 2013 3:25 pm
by chriss
come up on ebay from time to time, rusty is a 55 major and

I don't think hydraulics suit a post knocker I ended up with a petrol borer and manual rammer
Re: Hydraulics for a post knocker attachment
Posted: Sun Sep 01, 2013 6:44 pm
by greenow
just a idea whould it not work to put a seperate spool block on the rammer,
then connect a feed from the major and dump it back in the top cover.
if this did work you chould also ad rams in the rammer instead of topkinks ie for the tilt.
only a idea might not be any good???????????? good luck
Re: Hydraulics for a post knocker attachment
Posted: Mon Sep 02, 2013 4:52 am
by brockwood
Re: Hydraulics for a post knocker attachment
Posted: Mon Sep 02, 2013 5:14 am
by brockwood
Re: Hydraulics for a post knocker attachment
Posted: Tue Sep 03, 2013 5:30 pm
by MBeattie
Thanks for the feedback. I have found that you can get post knockers with a hydraulic pump that's driven from the tractor PTO. This seems to be the solution, so will look into getting one of those.
Re: Hydraulics for a post knocker attachment
Posted: Wed Feb 26, 2020 2:28 pm
by spike
hi how did you get on with that post knocker i have same on and i am trying to get it to work on my dexta, would be intresing to know how you got on
spike