From Screamscape:
2006 - Expedition Everest: The Legend of the Forbidden Mountain - (7/22/05) Guests spotted one of the Everest cars on the track being taken on a Pull Through the track, complete with yellow clearance boards placed around the cars to represent the average arm length to make sure none of the fake rockwork is too close to the trains. Once the pull through is complete and assuming that the rest of the rides systems are operational, they should be clear to start full testing of the coaster itself.