On my 2420D the hydraulic relief valve makes all kinds of sounds and it takes for ever for the oil to warm up enough for the 3-pt. and loader to work. Sometimes they still won't work unless I shut the tractor off and restart it. Low engine speed or turning the power assisted steering also helps somewhat. Sometimes it works completely correct. I have cleaned the filter in the transaxle and changed the fluid to 303 equivalent. I'm sure the relief has a problem but what do I look for? Whats in that thing? /forums/images/graemlins/confused.gif thanks