Ok all you CRJ-200 mechs, time to pick your brains. We have a CRJ-200 that pulls to the right when taxiing. No steering inop EICAS messages have ever been shown. Nothing is flagged in the ECU. The RVDT's are in rig. The aircraft has been jacked and the brakes aren't dragging. The Steering manifold and EHSV have been R&R'd with no luck. The R/H RVDT has been R&R'd with no luck. A new ECU has been slaved in with no luck. A new Tiller has been slaved in with no luck. Both engines have been tested for Accel/Decel rates and have passed. The NWS harness has been ohmed out and Megged, both while being shaken, and it has passed. Both NLG tires have been R&R'd with no luck. As of right now, the SSV is being changed, followed by both actuators. What the heck else is left in the system that would cause the aircraft to veer to the right(only) while taxiing? The drift is not violent, but it is noticeable and unacceptable. Every other time I've seen this problem, it ended up being an EHSV or RVDT at fault. We're sick of looking at this lawn ornament. Maybe it's time to call our friends over the border for an action plan...Any ideas?
[Edited 2007-04-08 02:07:59]