[R-390] Oldham Coupler Maintenance

[Tim Shoppa]

Bob wrote:
> Check your PTO for bad lubrication. The spring on the Oldham coupler  
> can only deal with a limited amount of torque. The same thing is true  
> of the screw driving the tuning core. Since the PTO is sealed they  
> often do not get a regular clean and lube treatment. The result can be  
> concrete where there used to be lubrication.

The worst-lubed PTO I ever saw was a Cosmos that had been rebuilt
(according to a sticker on it) by Raytheon in the mid-70's. It was
severely gunked up with overlube. IMHO based on that experience, not
getting a "Regular clean and lube" that's done by gunking everything
up with too much lube is the worst thing that can be done to a PTO!

Tim.