Normally returns would be plumbed in below the oil reservoir to prevent foaming, but this shouldn’t be strictly necessary for the odd occasion that a relief valve would operate. This isn’t as neat as the internal valve option, but it would never the less do the job and get your tractor going.Īn off-the-shelf pressure relief valve could be plumbed into one of the external ports with a return back to the reservoir. This is the option that Keith took with his TEF-20 when faced with this situation. The later pumps had a blanking plate over where the valve was fitted, so it is simply a case of removing the blanking plate and fitting a new relief valve. We’ve already mentioned that the earlier pumps had a relief valve fitted to the pump itself. It is therefore necessary to ensure that when replacing a later style top cover (with the integrated relief valve) that either the same design of top cover is used or a relief valve is fitted into the system somehow. The earlier tractors had the relief valve fitted to the pump, whilst the later tractors had the valve integrated into the top cover. The easiest solution for most people is to source a second hand component. Want to check out our tractor maintenance videos? Click here to see what we've got!īroken hydraulic top covers are a relatively common problem with Ferguson TE-20 tractors.
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