I will add my two cents here. I recently had some issues with the front landing gear. The motor and gear box are bolted together as one unit. This assembly is not bolted to anything, but it does get held in place on the landing gear shaft by a collar. There are some small tabs on the gear box that sit on each side of the leg.
I agree with the others about checking the nut and bolt on the cross shaft.
The "clicking" might also be the clutch slipping. There is a clutch built into the motor. This was my problem. It also clicked when I raised my coach, then stopped working all together. My fix was to get a kit from
Venture Mfg, which added a second motor to the other leg. Overall, I like it. A little faster and no effort to raise the coach. HERE is the link my install.
Let us know what you find.
Peace
Dave