Pin the Drive Pipe Clevis to the OT Lever with the Clevis Pin. Then,insert the Drive Pipe into the Drive Pipe Clevis and the clevis of the drive phase.Clamp each clevis to the Drive Pipe with the U-bolts. Tighten the Piercing Screws but do not pierce the pipe at this time.Be sure to mark the pipe at each clevis to check for slippage during operation