I have a 40 year old German vehicle with a power take-off shaft that has U-joints at each end. I have never run the PTO, and am now restoring the rest of the vehicle.
How can I inspect assembled U-joints? Is there some way to measure play in the joints? Or should I pull the retainer clips and completely strip the bearings apart and then solvent wash everything? I would like to save the old joints, as these are an odd size and may be very hard to replace with new.
Thanks,
Ed