wrightorchid 261 #1 Posted March 7, 2016 Is there a way to test a hydro tranny? Any way to identify red flags, excessive wear or other issues? I might be going to look at a 520, but don't want any major issues. 1 Share this post Link to post Share on other sites
pfrederi 17,913 #2 Posted March 7, 2016 Drive it around until it is warmed up (Uphills speeds the warm up). On pavement put it up against an immovable object (the tire of your pickup truck for instance) and see if it will spin the rear wheels with you sitting on it. 3 Share this post Link to post Share on other sites
cleat 6,420 #3 Posted March 7, 2016 I guess I have been lucky with my 3 520's and the 416 as they all have good running Onan's and good working 1100 transmissions. They all seem to take different warm up time until hydraulic lift works but all work otherwise. The other thing you can do is just like the engine, pull the dipstick and examine the oil on it for water, grit, bad smells etc. Share this post Link to post Share on other sites
WHX?? 49,207 #4 Posted March 7, 2016 (edited) Check on the ground and underneath the hydro for excessive oil or leaks, most hydros do leak a little so a little is ok, but not dripping. Check the filter which is easily visible from the rear end. See if if looks like its been on there forever. Check the fan on the right side and what's behind the fan (cooling fins). If it looks lke its' real dirty or fins are even plugged might be a sign of the horse not being kept real well. Same with the engine.Ask if the seller has any service records. Edited March 7, 2016 by WHX6 Share this post Link to post Share on other sites
wrightorchid 261 #5 Posted March 8, 2016 Thanks for the good ideas. Share this post Link to post Share on other sites
