Rear arms not dropping low

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taylor6632
Posts: 35
Joined: Tue Aug 22, 2017 7:22 pm
Location: Yeovil

Rear arms not dropping low

Post by taylor6632 » Mon May 28, 2018 3:44 pm

When my 996 is running the rear arms don't quite drop low enough to hitch on some of my attachments. It used to be alright and if you switch it off the arms drop within 30 seconds to the floor with my topper on. Any ideas as I'm topping at a real odd angle and have to store my topper on bales to hitch it on and off.

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ollek
Posts: 3774
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: Rear arms not dropping low

Post by ollek » Mon May 28, 2018 4:54 pm

Have the valve chest been out from the tractor, and if so, was all the adjustments made correctly and in the correct sequence? What service have you selected, depth, height or TCU/External?

taylor6632
Posts: 35
Joined: Tue Aug 22, 2017 7:22 pm
Location: Yeovil

Re: Rear arms not dropping low

Post by taylor6632 » Mon May 28, 2018 7:35 pm

It's on height. Was working fine before being parked up in October. Nothing been out apart from the dump valve as seals needed doing. The hydraulics operate fine, no jumping or pulsing. Just won't drop far enough to hitch things on or top level(front of topper about 6 inches in the air with back on the ground).

Can you adjust the drop links to the holes closer to the tractor? Looks as if the angle would be wrong and foul up. (it's currently set up for cat 2 holes on the arms with cat 1 holes being the ones attached to the tractor)

Scooby
Posts: 3927
Joined: Tue Jan 03, 2006 8:16 pm
Location: Warwickshire

Re: Rear arms not dropping low

Post by Scooby » Tue May 29, 2018 6:29 am

If you change the hydraulics over to Depth instead of the present Height position you will find that the linkage will drop lower. If you need to have the system set to Height as opposed to Depth then you just have to change it back once you have the implement attached.
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Three is twee, four does snore, but 6 just clicks........Scooby

taylor6632
Posts: 35
Joined: Tue Aug 22, 2017 7:22 pm
Location: Yeovil

Re: Rear arms not dropping low

Post by taylor6632 » Tue May 29, 2018 7:35 am

Thanks. I've tried it on all 3 settings, played with the 3 way valve as well but still only drops to the same height. As soon as engine off it drops the final 6-8 inches. You can see the arms lift straight up again once you turn engine back on. Makes attaching things a real pain and only topping off the top of the grass haha.

jazo
Posts: 772
Joined: Fri Jun 15, 2007 7:13 am
Location: New Zealand

Re: Rear arms not dropping low

Post by jazo » Tue May 29, 2018 7:48 am

Hi try removing the cover behind your right foot that has the lowering speed control knob and there is a 1/2" size nut in there. Unwind when it's running might only take a couple turns to lower correctly
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cobbadog
Posts: 574
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: Rear arms not dropping low

Post by cobbadog » Tue May 29, 2018 7:48 am

Sounds like a stuck valve somewhere in the system.

taylor6632
Posts: 35
Joined: Tue Aug 22, 2017 7:22 pm
Location: Yeovil

Re: Rear arms not dropping low

Post by taylor6632 » Tue May 29, 2018 7:57 am

Am going to drain the old oil and flush run it with diesel. Got a new filter that I'll put in with some new oil as well. Might as well try that first to see if it moves anything as was spot on last autumn. Hasn't been used all winter.

If not I'll have to investigate the valves but always worry about it not working at all as I've been told these systems are tempermental.

taylor6632
Posts: 35
Joined: Tue Aug 22, 2017 7:22 pm
Location: Yeovil

Re: Rear arms not dropping low

Post by taylor6632 » Tue May 29, 2018 8:18 pm

Had a play this evening, not getting it to drop any further than yesterday whilst the engine is running.

What are peoples thoughts on moving the drop links back a hole (nearest to the tractor) I've done it to see and the arms now drop almost to the floor. Just not sure on the angle of the drop links now they're right at the front of the arms.

This is a "make do" approach until after hay making is over as don't want to fiddle too much with it and then have no tractor, or be it get stuck using my zetor which has no brakes so not safe on the road hauling bales.... :shock: only gets used in the fields or short road journeys very early in the morning :oops:

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