Hello Norbert, What a disaster! There are several possibilities as to how this could happen. When any part of the internal linkage is stripped it is essential to operate the levers by hand with the vertical control lever held also by hand to ensure that the movement of the lever answers the commands from the quadrant levers to operate the pump lever correctly. If the quadrant support tube has been refitted with the rollers in the incorrect places then you might find that the pump will be in Constant Pumping and the arms will rise with no neutral position reached just before full lift.
Another possibility is that the adjustments on the system were carried out without the MF 272 ram arm setting gauge and without the special tools. When used this will ensure that the pump is placed in neutral before full lift is achieved. If this is not used the ram arm will raise fully and strike the front top piece of the rear casing and something has to break.....you can't rely on the relief valve. This would be what my money would be on.
The third possibility is that someone has fitted a relief valve with with a higher setting or has has been suggested, it had stuck. I think this is unlikely because it the adjustments had been carried out fully the relief valve would not have operated anyway.
Norbert, would you be kind enough to contact me on my e-mail address please? Thanks.
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