No need to drive them,
the wedges are used when the carrier is loaded, and the springs are compressed enough that the spring rod sticks out each end. The wedges hold the springs at that level of compression as the carrier is jacked up, otherwise the springs would push out to their limit first before the wheels started to lift.
When the carrier is jacked back down to earth, the should lift out with minimal effort.
Rob
LP2 (MG) NZ
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