Changing check valves, little trouble

[03BlackWidow]

I bought 2 new check valves for the hp oil line into the manifolds. I cant get the snap fitting apart. I cant pop it off by hand and my fuel line disconnect tools wont get into it.
Whats its take and how?

 

[matty169]

fittings

If you are talking about the high pressure oil feeds, you can use the wrench for a air drill or dremel. The collet wrench.

 

[03BlackWidow]

I got it last night, ended up cutting down a wrench to pop it loose.