Hydraulics Help

[MDD 0]

I am in the process of reassembling my AC 720. Does anyone have any advice on reconnecting hydraulic lines? Should one use any kind of thread tape or pipe compound?

[Dutch 4]

Thread sealant is not needed or advisable on connections using flared or "o" ring connections. Sealant is needed on pipe fittings.

[acjohn 0]

Dutch is correct. The teflon tape or thread sealant is used on NPT fittings to reduce friction and allow you to sufficiently tighten the fittings to slightly deform the threads and allow the tapers to mate tightly and provide a good seal.