Ole MN 11 #1 Posted September 15, 2012 I have a Johnson Loader on my GT 14 and I believe the pump is not putting out enough pressure. The most I get is about 500psi when bucket or tilt is maxed out. I have been trying to find out the specs for the pump Cessna but haven't been able to find. I got a part number that was stamped on the pump but still can't find anything. Im thinking I have a modle 14. Any info would be helpful or what size pump I would need to replace it. Thanks Brad Share this post Link to post Share on other sites
sorekiwi 761 #2 Posted September 15, 2012 I cnat help you off the top of my head but if you search on WeekendFreedomMachines.com you'l find a bunch on info from the JD guys. I dont remember any of the details, but there are a lot of threads talking about what pressures and volumes to run, as well as suitable replacement pumps for the Johnsons. Share this post Link to post Share on other sites
shorts 182 #3 Posted September 18, 2012 Have you checked the pressure relief valve? If it's improperly adjusted, or has a damaged/broken spring it won't let the pump make pressure. it's part of the spool/conrol valve assembly, Share this post Link to post Share on other sites
