View Full Version : TR4/4A TR4 OD Maybe Last Question

04-01-2012, 01:14 PM
Before installing the rebuilt OD, how do I know that the relief or "non-return valve" is working

I've got 375lbs of pressure and the solenoid works correctly, but what do I check on that other valve? Thx

04-01-2012, 03:14 PM
If it built pressure, the non-return valve is working. If the pressure didn't continue to climb, the "relief" valve (which is just the port that gets uncovered by the accumulator piston) is working.

04-01-2012, 08:02 PM
Thx Randall, you've helped bring me here from the first day I found gear lube leaking--and I even copied your Allen head bolt trick on the clamp. Now that goes way back.