To swap the elbows, disconnect the battery and remove the alternator. Then there are three bolts holding the alternator bracket to the motor
In this pic you can see the holes.
When you wiggle that off, you have both elbows accessible. Clean the holes with steel wool and then lube the o-rings with either vasoline, oil or something slippery. Slide then into the tensioner/alt bracket and put it all back together. Bolt things back together, refill and burp the coolant and you are back on the road.