"Manic-Mechanic" 1,195 #1 Posted May 11, 2022 A friend has a D and it hesitates hydro on start-up, Cold/Hot same. Changed oil, (same type) filter and aerated. Still does it. Could it be slippers? Debris? Or one of a many other things? Thoughts greatly appreciated. Share this post Link to post Share on other sites
daveoman1966 3,758 #2 Posted May 11, 2022 There MAY be an issue with the acceleration valves...on the Hyd Motor section. The related items are 4-89 thru 4-95 in this schematic. You'll find another similar set on the OTHER side of the hyd motor. DO NOT mix the parts as they are very similar. 1 1 Share this post Link to post Share on other sites
