904 Pump Housing Leaking Between Ports

T56MaxTorq said
I will try nuts and bolts and see if that helps! I didn't think of that. It might help since the bolt holes are adjacent to the those fluid ports.

Of course it will only make you feel better about it, but that couldn't be a bad thing.
Once bolted in it should seal as well or better.

80fbody said
I also learned it's best to just give a quick "blip" with the compressed air. If left on longer it will bleed out & I've thought there was a problem when there wasn't. I changed a set of piston seals about 4 times before someone cleared that up for me.

About one second at 30 lbs or so is what I have always used.
After awhile you get used to the sound it makes when it is good, but that does'nt do any good for someone who has never heard it. :-)