1212 rear hydraulics/quadrant issues

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bulletprooflestat
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1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Tue Sep 11, 2018 12:24 pm

Hi all
Can anyone assist with the below
I have removed the front loader rams and the steering ram to have the seals replaced. I have put all this back together front loader and steering working fine but when I use the quadrant lever to raise or lower the rear linkage with the back actor attached it won’t move. The quadrant feels a though there is no resistance so I’m not sure if it could be air in the system I have put in 25 litres into the back end it is still it showing on the dip stick. The only other thing I can think of is that I have knocked a lever that has isolated the rear. I’ve read the manual and looked at the diagrams but it’s not been running for 12 months and I’m not sure what’s what. Any help greatly appreciated I can take pics of the levers if needed thanks in advance

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ollek
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Re: 1212 rear hydraulics/quadrant issues

Post by ollek » Tue Sep 11, 2018 2:25 pm

Where is the oil supply to the loader taken from? Doe's the loader have its own operating levers? Is the linkage fully up, fully down or in a intermediate position? The feel in the 3-point hitch lever has nothing to do with the oil level in the transmission / hydraulics.

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Tue Sep 11, 2018 9:38 pm

Hi the front loader doesn’t have controls on the inside mudguard it’s controlled from the lever behind the handbrake just next to the quadrant the linkage is fully down now as the back hoe is on the ground I’ve just tried again moving every leaver in every combination as far as I can see ! Do you know the positions they should all be in in order for the back hoe to be raised and lowered? Thanks

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ollek
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Re: 1212 rear hydraulics/quadrant issues

Post by ollek » Wed Sep 12, 2018 5:25 am

The 3-way valve has to be in position "L" for the 3-point hitch to work and in position "1" or "2" for the loader to work. The position 1 or 2 is depending on how the loader supply is plummeted in. The main control lever for the 3-point linkage and the external hydraulics that are connected to the 3-way valve. Please read the Operators Manual carefully. The manual shows you all the handles and knobs, what they are for and how they are to be used. Can you please send some pictures showing the plumbing for the loader and other external equipment's as well as the levers you have on your tractor. One more question, what do you mean by "back actor"?

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Sat Sep 15, 2018 9:38 pm

Sorry for the late reply had some issues with passwords I have some posted some pics below of where the levers are the back actor is the back hoe attached via pto which I am unable to raise off the ground I have looked in the manual but am struggling to work out what should be where thanks

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Sat Sep 15, 2018 9:41 pm

Sorry files are too large give me a while to get them on !

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Sat Sep 15, 2018 10:06 pm

Ok think this should work these are the pics from today showing various levers etc the last one shows the filler and the dipstick where I filled the oil for the back end thanks
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Berk
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Re: 1212 rear hydraulics/quadrant issues

Post by Berk » Sun Sep 16, 2018 1:11 am

On your 2nd picture, the lift latch lever looks like it's on upside down to me, Might not be anything, but jumped out at me.
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Lofty
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Re: 1212 rear hydraulics/quadrant issues

Post by Lofty » Sun Sep 16, 2018 1:54 am

The lift latch can be up or down. Either way it’s off.

Bulletproof, push the main lever, 3rd pic, hard back against the spring and move the small lever behind it to the centre position (height).

Now move the 3 way valve - knob on the left, 4th pic - fully to the right, then left one click. This is the L for lift position.

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ollek
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Re: 1212 rear hydraulics/quadrant issues

Post by ollek » Sun Sep 16, 2018 8:50 am

To the original poster. A hoe is an implement, not an "back actor". The hoe is not connected to the pto, but to the lower and top links and this is called 3-point hitch. The pto is the shaft on the rear of the tractor pto housing. This is used to give power to rotating implements connected with a pto drive shaft.

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Sun Sep 16, 2018 10:46 am

Thanks for the help but still no luck I have done what you said (I think) to clarify I have added pics below to show pic 2 lever moved back and locked in position the black knob in the same pic has not moved. Pic 1 I have moved the switch to the far right then 1 click back. Pic 3 this operates the front loader and is working move it forward to reside and back to lower. Pic 4 this is what I use to raise and lower the back hoe implement attached to the pto this is the one not working. NB I tried the s sequence with the engine off the ram it it didn’t work so I repeated it running and still nothing. Any thoughts ? Apologies the pics are uploading in a different order to what I am adding this post is now correct
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ollek
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Re: 1212 rear hydraulics/quadrant issues

Post by ollek » Sun Sep 16, 2018 11:22 am

The picture of the 3-way valve shows that the lever (it is not a switch) is fully at one of the end positions (looks to be fully left). The instruction given was to move the lever fully to the right and then back one "click" to the left from the fully right position. There is 4 positions for the 3-way valve lever, and you can feel these positions when you move the lever slowly from side to side and the correct position for operating the 3-point hitch is one "click" to the left from the fully right position. Why haven't you done that? The implement (in your case a back hoe, if that is what you want to call it) is NOT connected to the pto, but to the linkage (called 3-point hitch). PTO stands for Power Take Off and this is a rotating shaft at the rear of the pto housing. Please read again my earlier post about this. You can connect many different implements to the rear linkage and the implement can be a plough, a harrow, a hoe or any other implement designed to be connected to the 3-point hitch. You have said that you have read the operators manual, but for some reason it sounds like you have not understood much of what you have read. Or have you read something else than the Operators Manual? Please send a photo of the cover page of the manual in question.

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bulletprooflestat
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Re: 1212 rear hydraulics/quadrant issues

Post by bulletprooflestat » Sun Sep 16, 2018 1:00 pm

Thanks for the clarity Ollek it must have been incorrectly on purchase either way whatever we are calling it it’s not working !

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ollek
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Re: 1212 rear hydraulics/quadrant issues

Post by ollek » Sun Sep 16, 2018 1:53 pm

Have you moved the 3-way valve lever to the correct position, as instructed. Please show a picture of the lever position as it is now.

philedge
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Re: 1212 rear hydraulics/quadrant issues

Post by philedge » Sun Sep 16, 2018 2:01 pm

I dont know the specifics of your tractor but the following may help.

Depending on the age of your tractor/manual some of the equipment on your tractor may not be covered by your manual so it maybe that you can be forgiven for asking questions- my 880 manual doesnt cover the lever operated 3 way valve(at the back of your left foot) and it doesnt cover the live take off valve(between the base of the seat and the quadrant) used to control your loader.

If the loader is working then your pump/oil level/releif valve are probably all good. To operate the rear links you need to move the 3 way valve lever fully towards the gear box and then 1 click away from the gearbox. This routes oil pressure to the rear lift arms. The service selection knob at the back of the quadrant lever needs to be in the height control position which is pointing forward as you have it in the photo. Set the live take off valve to the neutral position so that the loader is neither being raised or lowered. You should now be able to move the quadrant lever backwards to raise the rear links.

If the links dont raise then follow the fault finding guide in the selectamatic system description on the DBTC web site.

I assume that when you say your back hoe/back acter is connected to the PTO that it has its own PTO driven hydraulic power pack

Hope that helps
'66 880 Selectamatic rat.

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