Plumbing in a loader McCormick CX

gmc541

Member
Location
Omagh
1 and 3 are returning oil. 2 is feeding a constant supply, 1 seems to be returning oil from where the original supply line is feeding from. 3 is going somewhere back in the backend, and I will take a few more pictures in daylight. Excuse the numbering system not in sequence [emoji87][emoji87]
Screenshot_20201017-011051_Gallery.jpg
Screenshot_20201017-010942_Gallery.jpg
 

Numick

New Member
I thought I had it mostly figured out but I could be wrong. This is the way I thought it should be :
Pipe 1 Pressure pipe from top of spool valve to P (bottom left on chest valve (CV))
Current pipe needs removal from spool valve to large suction tube (steering pump side)
Pipe 2 Return pipe from back of tractor (a steel pipe behind the couplers) to T1 (bottom right on CV)
A blank on the steel pipe needs removal (32mm head)
Pipe 3 "Tank" pipe from suction tube to T2 on right side mid way up on CV. I think this then becomes the high pressure carry over.
Would this be the way it should be?
 

Mur Huwcun

Member
Livestock Farmer
Location
North West Wales
As in @gmc541 photos no 2 is supply and usually marked with a P, no1 is carry over. On a open centre system you need to break into the tractor circuit and feed the block to no2 and then carry the feed on back to wherever you broke the circuit to feed the next item in line. Usually on tractors hydraulic pump will feed trailer brake valve as a priority, then the spool valves then the hydraulic lift. They’re all part of a circuit. You just fit the loader valve inbetween one of them if it makes sense. No 3 pipe usually marked T is a return to tank from the loader valve block PRV when a service is dead ended or overloaded.
 

Numick

New Member
I thought I had it mostly figured out but I could be wrong. This is the way I thought it should be :
Pipe 1 Pressure pipe from top of spool valve to P (bottom left on chest valve (CV))
Current pipe needs removal from spool valve to large suction tube (steering pump side)
Pipe 2 Return pipe from back of tractor (a steel pipe behind the couplers) to T1 (bottom right on CV)
A blank on the steel pipe needs removal (32mm head)
Pipe 3 "Tank" pipe from suction tube to T2 on right side mid way up on CV. I think this then becomes the high pressure carry over.
Would this be the way it should be
I thought I had it mostly figured out but I could be wrong. This is the way I thought it should be :
Pipe 1 Pressure pipe from top of spool valve to P (bottom left on chest valve (CV))
Current pipe needs removal from spool valve to large suction tube (steering pump side)
Pipe 2 Return pipe from back of tractor (a steel pipe behind the couplers) to T1 (bottom right on CV)
A blank on the steel pipe needs removal (32mm head)
Pipe 3 "Tank" pipe from suction tube to T2 on right side mid way up on CV. I think this then becomes the high pressure carry over.
Would this be the way it should be?
[/QUOTE
That looks so simple. Is that a two pipe system then?
 

Numick

New Member
Thanks Mur Huwcun. Maybe I have the pipes correct but wrong in my thinking re the return to tank. Then T1 is return to tank, not T2 ?
 

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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