Quote:
Originally Posted by Gyrene4Life
Hello all...
I am currently dealing with having to replace a hydraulic line on my Lippert Level-Up system. The orange (return) line on my landing gear has started to blister and will be putting a better quality line on.
My question is, does anyone know what kind of hydraulic fitting is used on the ends of the lines?
Varieties include:
NPT
JIC 37
SAE 45
O-Ring Face
etc...
I realize that I could take the hose off and get a better idea but since it is on my landing gear I would only like to remove the line once and replace.
The attached image shows the blistering near the connection but the blisters do actually appear along the entire length of hose.
Note: Contact has been attempted with LCI but never received a response.
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Been there done that. Mine all failed and hydraulic guy said connectors weren't the best. I went to hydraulic hose place and got all new hoses connectors. Make sure they're rated for 3000 psi. My black ones (jacks down) are all great shape.
Orange hoses are retract hoses and are all with common pneumatic circuit. Your jacks fully retracted is triggered by pressure of approximately 2150 psi on those lines. So when jacks are retracted, 90% of time if part timer and during storage those lines are fully pressured. When I store, I drop jacks manually just a bit until jacks down light is on....releasing pressure. Just remember to retract next time you head out.
LCI tech support told me this. I decided to drop jacks to relieve pressure. Don't over expose the polished pistons long term though.