What clearance problem must be checked for on the lower, tractor-mounted fifth wheel setup of a doubles/triples combination during the walk-around inspection?

Question

Accepted Answer

That the fifth wheel isn't mounted so far forward that the tractor frame will hit the landing gear, or the cab will hit the trailer, during turns

Answer

That the landing gear is lowered at least halfway before driving

Answer

That the glide plate is removed entirely before coupling

Answer

That the kingpin is left dry, with no grease on the fifth wheel