[AT] Massey Ferguson power steering

[Len Rugen]

My steering is very hard to turn at engine idle, is it probably the pump?  

The tractor is a 255, about 1979 model with 2100 hours.  When I got it at about 1500 hours, the pickup screen on the ps pump was damaged, so not screening, so was replaced.  That's been 4-5 years, I noticed the steering was a a little hard at idle this winter, but it's worse now even with the warmer temps.  

Thanks for any ideas? 

Len Rugen