190XT Power Director

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   So here’s the story. I have a 67 190xt Diesel. I’ve always liked the 200 style power director handle, as I grew up with 3 of them. I switched the console last weekend. I adjusted the linkage properly, first with the 1.5” measurement and also checked with gauges. I have drag in neutral that I never had before. It loads the engine a lot. This weekend I removed the hydraulic pressure to the pd valve, and test ran. No drag, same as before. My gauges on the power director valve show 280 in high and low, and 40 in neutral, on both clutches. No matter where I wiggle the spool, it never goes below 40. Is 40 psi enough to make it drag? Could I have damaged the internal spool by moving it too far before I adjusted it? Last question, I have access to a late 200 pd valve. Besides the different external feed line, is there anything else that changed that prevents me from installing the later valve? 

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XTD301 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 17 hours 19 minutes ago Location: Wausau WI Points: 2	Post Options Post Reply Quote XTD301 Report Post Thanks(0) Quote Reply Topic: 190XT Power Director Posted: 16 hours 56 minutes ago at 7:42pm
	So here’s the story. I have a 67 190xt Diesel. I’ve always liked the 200 style power director handle, as I grew up with 3 of them. I switched the console last weekend. I adjusted the linkage properly, first with the 1.5” measurement and also checked with gauges. I have drag in neutral that I never had before. It loads the engine a lot. This weekend I removed the hydraulic pressure to the pd valve, and test ran. No drag, same as before. My gauges on the power director valve show 280 in high and low, and 40 in neutral, on both clutches. No matter where I wiggle the spool, it never goes below 40. Is 40 psi enough to make it drag? Could I have damaged the internal spool by moving it too far before I adjusted it? Last question, I have access to a late 200 pd valve. Besides the different external feed line, is there anything else that changed that prevents me from installing the later valve?

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DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21112	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 15 hours 15 minutes ago at 9:23pm
	I guess until you re-check your clutch pressures with the hydraulic oil at operating temp (more than 150 degrees) I wouldn't lose one seconds sleep over what you have. The Low and High clutch pistons are connected together by springs and a linkage rod that return them to neutral. 40 psi on each piston cancels each other out...no movement. Cutting off all oil flow/supply to the P.D.valve eliminates lube oil flowing thru the clutch assembly which does cause viscous drag when the oil is below operating temp. As far as a later 200 valve assembly, I've had far more trouble with that valve than I ever did the old original style. The sliding spool pressure regulator is known for sticking versus the tapered poppet style that can't stick.