Hydro ports
 

Hello everyone, I got a question I haven't been able to find on the net.
Can anyone tell me what the ports that are located on the bottom ( below the filter) are for on the Sunstrand 15 series? Perhaps they are just cross bores for internal machining. I haven't taken one down that far to see where the passages go.

If these are the ports your asking about, yes they are just cross bored.

That's the ones,
 

Thanks Sam.

It's a secret. We can't say what they were really for. :bigeyes: