Posted by mEl on November 10, 2012 at 11:01:06 from (126.96.36.199):
In Reply to: 970 or 1070 posted by jon f mn on November 10, 2012 at 04:59:21:
ACG has covered the RPS issue very well, I have seen the first series powershifts go in excess of 7000 hrs with NO problems and get weary of seeing an excellent transmission maligned as it is on here at times.
The relief valve issue he mentioned happened all to often and allowed unfiltered oil to flow unimpeded into the RPS valve and become imbedded in the pilot spool bores causing sticking which if not corrected led to burnt and warped plates in the clutches, but that is just plain servicing stupidity. Later RPS unit were redesigned for even more reliability.
Some C2-C3 bolt breakage was experienced but proper assembly on a rebuild all but assured no further problems in that area.
Much has been said about the jerkiness of the RPS but anyone who has run a JD powershift would not complain about the Case's smoothness, I ran a 3020 PS and certain range shifts would bring the front wheels up .
Just my two cents and I was there through all the years these were sold and admittedly have done dozens over in my lifetime. I have more than a theoretical book knowledge. I still love the RPS.
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