135 Mark 2 Hydraulic Pump Control Valve - Fitting Info

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ChrisB
Posts: 4
Joined: Wed Dec 03, 2025 10:29 pm

135 Mark 2 Hydraulic Pump Control Valve - Fitting Info

Post by ChrisB »

Hello All, my 135 was struggling to lift on the link arms and nothing obvious wrong, so I've gone for a repair kit in a 'replace everything' overhaul. I also obtained a new control valve which is of the type attached to this message and different from the original.
The actual 'body' with the o-rings fitted fine, once I had drilled the filter arm for the small dowels, but I can find no mention anywhere of how to fit the long spring (salvaged from the original) - the only video I can find from 'Tractor Parts Dog' does not appear to use the spring at all. The AGCO diagrams are not clear - can anyone help please?
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Control Valve.png
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Sandy.
Posts: 108
Joined: Sat May 22, 2021 5:19 pm

Re: 135 Mark 2 Hydraulic Pump Control Valve - Fitting Info

Post by Sandy. »

Hi Chris.
Can you post a picture of the old valve and the spring that you are talking about, just to clarify the correct part. From my understanding you are fitting a MK 2 valve into a MK 1 pump?, please feel free to give me a call my number is in the journal under Technical.
Sandy.
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