PTO Shield Lubrication

[Kubotafan]

The tubes on the shield on my PTO shaft is very tight sliding in and out. I know the bearings need lubrication, but does anyone lubricate the tubes, and if so what with?

 

[cathy liebchen]

PB Blaster

 

[Cougsfan]

A silicon spray would most likely work as good as anything on plastic shields.