hydraulic prerotator pump

[Caribean_gyro]

:confused: I have a squiking noise on my pump when it warm up. The pump was check and they only change 2 "o" rings. but the clutch moves freely. Now if you slowly move it you can feel it a bit rought . The shop said the clutch is no good but it works fine. I fly with no problem and engage properly.
I still think is the sealed bearing.

I am trying to get it cross here and the only number I got from the clutch is

sanky made by ogura
model MS5 1/4 a-2g 1 vdc. Can you guys using this hydraulic prerotator tell me what clucth brand and number you are using.

thanks
Chuck P.