New ZF 220a Pressure Questions

[Scott A]

Yard just installed a new ZF220a gear on a 6bta 330 cummins.  Last one had an issue keeping pressure.  The new gear is set up with a new trolling valve installed and the pressure sender is on the outboard side of the trolling valve with a right angle turn on the pressure sender.  (sorry, can’t get pictures until Wed.)  In reverse, I get zero pressure on the gauge.  Also, in gear, I am only getting 300 psi.  I get just under 300 psi in idle forward and 300 psi at cruise.  Doesn’t really change much when I speed up and stays constant at around 300 psi at cruise.  No fluctuation.  This was first quick sea-trial.  Any thoughts?  I guess I should stick a liquid pressure gauge on it.  Is zero in reverse normal with the sender on the trolling valve side?

ASA

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[Tony Athens]

Gauge is in the wrong place–Put it on one of the transmission cooler connections

 

https://www.sbmar.com/articles/gear-transmission-pressure-sender-location/    

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