A big hello to everyone. We've got a Super Major thats been here as long as I can remember but hadn't been used for about 15yrs. Hubby got it up n running fairly quick but the rear lift arms will not lift or work auxiliary service control.
The PTO engages and oil levels good. Removed lift cover and placed thumb over oil pipe whilst turning over engine n pressure was v good so the pump seems fine.
Removed lift cover and lift cylinder assembly, cylinder, piston and piston seal in v good condition, no broken linkages but main control spring (top link 3 point linkage) was missing. Would this stop lift arms working? My father used it last n I can't remember him removing it but he's sadly no longer with us to ask.
Removed flow control valve housing and auxiliary service control valve but could find no problems. All o rings n gaskets replaced and assembled.
Is main control spring enough to stop lift arms working or are valves faulty???
Ran out of other ideas so any advice really welcomed.
'62 Super Major STILL no rear lift
Hi,
I had a similar problem, my Super wouldn't lift. In the end I found that the Unload valve was stuck. It is a small valve next to the control valve. it is behind a plug that needs to be pulled out. I screwed in a bolt and pulled it that way. Then you need to push the valve out and clean it. If you have the service manual it will explain better than me.
It might be this in yours aswell.
Scruff.
I had a similar problem, my Super wouldn't lift. In the end I found that the Unload valve was stuck. It is a small valve next to the control valve. it is behind a plug that needs to be pulled out. I screwed in a bolt and pulled it that way. Then you need to push the valve out and clean it. If you have the service manual it will explain better than me.
It might be this in yours aswell.
Scruff.
May all your dreams be blue !
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essex pete
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Re: '62 Super Major STILL no rear lift
Hope you don't mind me butting in but it is not particularly safe to use a finger for pressure testing with oil even if not actually running.Desperate wrote:A big hello to everyone. We've got a Super Major thats been here as long as I can remember but hadn't been used for about 15yrs. Hubby got it up n running fairly quick but the rear lift arms will not lift or work auxiliary service control.
The PTO engages and oil levels good. Removed lift cover and placed thumb over oil pipe whilst turning over engine n pressure was v good so the pump seems fine.
Removed lift cover and lift cylinder assembly, cylinder, piston and piston seal in v good condition, no broken linkages but main control spring (top link 3 point linkage) was missing. Would this stop lift arms working? My father used it last n I can't remember him removing it but he's sadly no longer with us to ask.
Removed flow control valve housing and auxiliary service control valve but could find no problems. All o rings n gaskets replaced and assembled.
Is main control spring enough to stop lift arms working or are valves faulty???
Ran out of other ideas so any advice really welcomed.
Many thanks Scruff and thanks for such a quick reply; will be having a look for it n post back later. Keep your fingers crossed - this isn't a restoration project - we really do need the old gal for working!
I'm sure you're right about the pressure testing Essex Pete, altho it does seem a fairly common method. Sadly, even with new batteries, she doesn't start without assistance from jump leads n without the engine running the pressure isn't excessive - point taken tho.
I'm sure you're right about the pressure testing Essex Pete, altho it does seem a fairly common method. Sadly, even with new batteries, she doesn't start without assistance from jump leads n without the engine running the pressure isn't excessive - point taken tho.
The finger test has been used for many years. Not a safety problem as the pressure built up is only a few psi. There is no chance of an oil injection. Its only just to see if the pump is producing any force at all.
You need a stud that threads into the plug, a short piece of pipe or socket to go around the end of the plug, then a washer and nut on the stud to draw it out. Do not tap it from the rear, this will damage the valve.
Clean with metal polish and refit. You should replace the "O" ring with a special unload valve "O" ring that has a blue dot on it. Should be available from your Case/New Holland dealer. If not, a later version of the valve with a metal ring is available or, at a push, put it back with no "O" ring on it.
The draft spring and linkage will need replacing if the lift is to work correctly. Control is achieved by the balance of springs inside the lift and if one is missing things will not happen.
You need a stud that threads into the plug, a short piece of pipe or socket to go around the end of the plug, then a washer and nut on the stud to draw it out. Do not tap it from the rear, this will damage the valve.
Clean with metal polish and refit. You should replace the "O" ring with a special unload valve "O" ring that has a blue dot on it. Should be available from your Case/New Holland dealer. If not, a later version of the valve with a metal ring is available or, at a push, put it back with no "O" ring on it.
The draft spring and linkage will need replacing if the lift is to work correctly. Control is achieved by the balance of springs inside the lift and if one is missing things will not happen.
Fordson Tractor Pages, now officially linked to: Fordson Tractor Club of Australia, Ford and Fordson Association and Blue Force.
Brian
Brian
Stuck valve
Sorry for not posting for so long...
Firstly we, (i mean HE really!), knackered the thread on the plug. All v embarrassing so I hadn't been to quick to post.
Anyway, rethreaded, the plug is now out and the valve was indeed stuck; well and truly. Cleaned up, it now appears fine.
So many thanks to all and we're now trying to locate a main draft control spring (which seems a real problem to source) and lift cover gasket for the SM so if anyone knows of a reliable (UK based) source for parts then pls let me know, (I've emailed/rang several companies but either no-one gets back or they can't help).
Final question...when reassembled what's the best hydraulic oil to use? Any recommendations?
Sincere thanks once again.
Firstly we, (i mean HE really!), knackered the thread on the plug. All v embarrassing so I hadn't been to quick to post.
Anyway, rethreaded, the plug is now out and the valve was indeed stuck; well and truly. Cleaned up, it now appears fine.
So many thanks to all and we're now trying to locate a main draft control spring (which seems a real problem to source) and lift cover gasket for the SM so if anyone knows of a reliable (UK based) source for parts then pls let me know, (I've emailed/rang several companies but either no-one gets back or they can't help).
Final question...when reassembled what's the best hydraulic oil to use? Any recommendations?
Sincere thanks once again.
Lift cover gasket is no problem as instant gasket will work very well indeed in that situation.
Malcolm Hipperson at Downham Market might be able to help. I will also ask locally.
Oil in the rear axle, any 30W oil will be OK or even 15/40W. Shell TOU or Castrol Multiuse is also good.
Malcolm Hipperson at Downham Market might be able to help. I will also ask locally.
Oil in the rear axle, any 30W oil will be OK or even 15/40W. Shell TOU or Castrol Multiuse is also good.
Fordson Tractor Pages, now officially linked to: Fordson Tractor Club of Australia, Ford and Fordson Association and Blue Force.
Brian
Brian