donn0128 wrote:
Yes, hydraulic hoses generally have a steel brade between the inner and outer layers. Hydraulic pressure? Yes, they will be pressureized when the cylinder is extended. Depending on whether this is a one or two line system. a hose will always be pressureized on a two hose system. On a single hose system the hose will not have pressure when the cylinder is retracted.
Very few RV Hydraulic lines(I know of NONE) have a metal or steel braid that would "protect" from slicing. They can be pinched and they can be cut by a razor type cutting tool. LCI slide systems ALWAYS have pressure on them, even the jacks. So, when you take the lines loose they will squirt about a cup of fluid or a little more. You can self bleed by just running the jacks and slide rooms in and out 7 or 8 times. Doug
http://www.lci1.com/assets/content/support/technical-information-sheets/Leveling%20and%20Stabilization/TI___118_Basic_Purge_Procedure_For_Hydraulic_Pump_Units.pdf