[AT] Re: Hydraulic components

[dfolske at nccray.net]

I have seen flakes of galvanizing material plugging orifices in 
hydraulic systems using galvanized pipe.  It doesn't happen often 
but it can. I've also seen orifices plugged with bits of teflon tape.  
Most implement dealers will tell you not to use that on hydraulic 
systems either but they still have it for sale on the parts counter!

Some of the service bulletins I've seen for setting up hydraulic 
motors for various purposes (fan drives on air seeders, for one) 
specified using black pipe as much as possible rather than rubber 
hoses for heat dissapation.  One bulletin mentioned that galvanized 
pipe did not dissapate heat as well as black pipe either.