Question on 2004 Branson 3520 Hydraulic Piping

[Zork]

Greetings,
My hydraulic tubing is coated to protect against corrosion, but the piping is rusting. I was thinking of replacing the tubing.
The standard hose and threaded end was 3/8 for the loader arms and bucket. The tubing measures .394 O.D. which puts me close to 10mm and larger than 3/8 tubing.

So the question is:
1. Is our piping metric or SAE?
2. Do I purchase 10mm compression fittings or the SAE 3/8"?

Thanks for any help.

 

[ptsg]

What can you source easily? The 10 mm or the 3/8" tubing? I would probably choose based on that if I were in your situation where metric stuff can be tricky to find.

I suppose you would need adapters to go from the 3/8 tubing to the hoses.

 

[Zork]

What can you source easily? The 10 mm or the 3/8" tubing? I would probably choose based on that if I were in your situation where metric stuff can be tricky to find.

I suppose you would need adapters to go from the 3/8 tubing to the hoses.

Thanks for replying, my fittings can be reused but I would need ferruls. And, all four hoses from the spool have compression fittings and can be reused. The fittings online do not offer information on the internal diameter of the fitting which would make it easy. The tubing apparently is measured by O.D.

So, if .375 is 3/8 O.D and .394 is 10.0076 mm O.D that should easy enough, but I would like some verification. I may need to put my hands on each and open my circuit to take a measurement.

 

[ptsg]

Yes, the tubing is measured on the outside, so that makes it a 10 mm tubing.

Haven't seen close picture of it but I suspect they use metric DIN 2353 compression fittings to go from tubing to hose.

 

[Zork]

Yes, the tubing is measured on the outside, so that makes it a 10 mm tubing.

Haven't seen close picture of it but I suspect they use metric DIN 2353 compression fittings to go from tubing to hose.

This is the hose fitting and it's thread diameter measures the same as the known 3/8 hoses/fittings that I replaced.
[If nothing else, I'd like to have in stock the Compression/NPT (M/F) fittings I can use in place of these main hoses, JIC. The tubing should be fine for years, but one never knows.]