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    • ZF 325 Low Pressure – Slow response

      This topic has 2 replies, has 3 voices, and was last updated byPhilip 5 years ago

      June 12, 2018 at 4:24 am ZF 325-1 gears. 2006 boat, new to me. Electronic controls and trolling valves. Problem on the starboard gear. Transmission pressure normal at start up, 343 PSI each gear. Putting the starboard in gear response is slow. 2-3 seconds or so from putting in gear to gear activating. Pressure drops to below 20 PSI and wont come all the way back up. No oil in bilge. No oil going out the pipe. Recently had an issue on same gear cooler leaking at fitt…

      Started by: steve mcgonagle in: Marine Transmissions

      2 Replies
      June 13, 2018 at 2:28 pm I think there are two springs in there… see attached pictures. I think one is a relief spring and the other a modulation spring for the trolling valve?

      Last Post by: Philip posted: 5 years ago

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