Hydraulic lines flex as a result of the pressure pulses causing them to try to straighten out. The norm for any hydraulic line is to try to install it in such a way that it can flex without contacting other lines or surrounding structure. They have steel braids inside to take the pressure, so would only leak after high hours with plenty of warning that they are going to go.
I imagine this was just an oversight on the installation of these lines, which was spotted by the maintenance engineer. The grounding was most likely a precaution.
Mart
Last edited by Graviman; 30th Dec 2006 at 10:50.
Reason: Typo