89
Bogie switch
ECS Gen. 1
Axle press
(extra traction)
Offset raising
Axle press allows the drive axle to exert more pressure on
the road surface. It is achieved by exhausting all the air
from the non-drive axle air bellows.
This can give extra traction, and can be useful on certain
poor road surfaces - e.g. slippery, rutted quarry roads etc.
Offset raising raises the chassis height slightly to maintain
ground clearance of raised axle tyres. It is achieved by
supplying more air to the drive axle air bellows when the
non-drive axle is raised.