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Part NSN Inner Hub Seal 5330-01-271-9410 CTIS Hub Seal 5330-01-272-1147 Outer CTIS Hub Seal 5330-01-308-0175 Axle Flange Gasket 5330-01-377-9775 If you have a leaking hub, these are what you'll most likely need. For most smaller o-rings, you can usually get a decent box of mixed...

Most of the stuff you can find on eBay or surplus dealers. The ECU is hard to come by though. The PCU can be rebuilt with new solenoids and o-rings. Not much else in there to go bad. What parts do you need?

If it was leaking, it is still leaking. Before tearing apart the PCU I would replace the o-ring.

I just kept the same orientation with the wires. I don't believe it matters though. Were you able to get 30~80 ohms on each of the pin sets? If you did, your solenoids should be good. If it's running air through the PCU then going to 5 lights that should mean you have a major air leak after the...

I might have issues with that one as well. I'm thinking of adding an in-line pressure gauge to see what's going on.

For the pressure transducer off the wet tank, you can disconnect the plug from the CTIS harness and short the pins. That will trick the CTIS controller into thinking there's 120psi in the tank.

I got a few requests for this info so here goes. My CTIS was doing 5 blinking lights after reaching 120 psi and there were no noises coming from the PCU on the floor. The troubleshooting guide pointed me in the direction of the control solenoids. To test f this is your issue, disconnect the 6...