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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF148 Leaking connector on power steering ram

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MF-148

03-30-2008 09:52:32




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MF148 Leaking connector on power steering ram

Got a new left hand power steering ram (sparex no S.60515 not Massey part) for my 148 but when connecting the lower feed pipe I was able to screw it by hand almost completely home, I have it tightened as much as I dare but it leaks fluid a quite a steady drip !!

This scenario strikes me as strange, does this suggest the fitting on the ram is too deep ? or should there be small �O� rings in this joint ? (I see none in my parts book)

Also I my steering is now as heavy as lead and making adjustments at the control valve makes no difference.

I am as certain as I can be that I have put the pipes on the new ram in the same position as the old one. If I had them backwards would I still be able to steer?
Also is it possible that the sparex part has the connectors reversed!!
Also I noticed sparex no S.60515 is in the catalogue as a Left hand cylinder equivalent to MF part 1885715M91, which according to my parts manual is a right hand cylinder, I presumed this was just a typo in the sparex catalogue but maybe there is more to it. Any body any experience with these rams ?

bg

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MF-148

04-05-2008 14:41:48




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 Re: MF148 Leaking connector on power steering ram in reply to Don_G, 03-30-2008 09:52:32  
Well I tested the cylinder and it moved in the opposite direction to what I expected :? , so I switched the hoses and steering is now fine (apart from the leak :cry: )

At least I have established you can still steer your massey with one of the steering rams plumbed backwards :roll:
bg



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MF-148

04-01-2008 14:52:01




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 Re: MF148 Leaking connector on power steering ram in reply to MF-148, 03-30-2008 09:52:32  
David

I presumed I could rotate the tie rod end at the back of cylinder so it could go either side, but you are right, I just checked the old one I took off and I cannot so the cylinder I have is the correct one as the ports are at the back just as per the old one (unless of course I can rotate the tie rod end at the back of the new cylinder!!) Tractor troubleshooting is confined to the weekend so it will be Saturday before I can try your suggestion of disconnecting one of the rod joints to confirm it behaves as expected

Cheers

bg

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DavidP, South Wales

03-30-2008 14:35:27




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 Re: MF148 Leaking connector on power steering ram in reply to MF-148, 03-30-2008 09:52:32  
Hi,
We have not experienced problems with non-gen steering cylinders but have had similar problems with brake cylinders on an MF 595. As you say you have tightened as much as you dare. We found that one of the problems was the thread had not been machined deep enough so that the nut was 'bottoming' before the pipe was gripped fully.
Can you compare this with the old one? It only needs to be one or two threads different.
How have you adjusted at the barrel? The steering column rises and falls as you turn the wheel. The barrel should be adjusted to to give an equal amount of movement on the spool valve and return to a centre position when released.
If you had one pair of pipes fitted incorrectly you would not be able to steer as the PAS would be fighting the manual steering. If you disconnect one of the rod joints then you will see if it is working or if it goes 'cross-eyed'.
It is unlikely that the connectors are reversed but far more likely that you have been supplied with a ram for the opposite side.
Cheers
DavidP, South Wales

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MF-148

03-30-2008 14:53:23




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 Re: MF148 Leaking connector on power steering ram in reply to DavidP, South Wales, 03-30-2008 14:35:27  
David,

Are these rams single or double acting ?

What is difference between a LHS and RHS cylinder and what is the effect of putting a right hand one on the left hand side ? The Barco web site shows one replacement ram that does either side

I am confused !!

bg



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DavidP, South Wales

04-01-2008 14:33:44




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 Re: MF148 Leaking connector on power steering ram in reply to MF-148, 03-30-2008 14:53:23  
Hello,
They are double acting. The only difference should be the position of the ports. The left hand ram will have the ports at the rear. If you put it on the right hand, the ports would be at the front. Possibly the one replacement cylinder has the ports perhaps at the bottom where either hose can be connected.
David



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