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allenhughey 11-14-2009 22:57:37 66.203.227.81 343331 Report to Moderator	I have a 1972 4020 with syncro transmission. The tractor looses power when climbing any kind of small hill. Also is slow to take off if rpm"s are up. Usually have to take off at idle and then I can increase rpm. I have gotton the tractor stuck a few times and the rear tires can not even get moving at high rpm in lowest gears. Again have to drop the rpm"s to idle speed and after 5 or 10 seconds the rear tires will gradually start to turn but there is little torque. Also had problems with the hydraulics not working at all when I was trying to get unstuck in reverse gear. I would have to go to forward gears to get the power steering and hydraulics for the loader to work. I want to see if anybody might know what is going on with my hydraulic system? [Reply]   [Send Email]
Tx Jim 11-16-2009 04:17:45 67.142.163.26 343466 Report to Moderator	Re: JD 4020 transmission pump problems in reply to John T, 11-14-2009 22:57:37   allenhughey said: (quoted from post at 13:00:27 11/15/09) should there be a smell of the clutch burning. I had pretty much ruled that out because there was no smell. Could have had a clutch disk installed with ceramic pads that don't smell when slipping but do eat up flywheels. As previously asked have you checked clutch pedal free travel??????? No hydraulics involved in movement of a Syncro-range transmission. Hot hyd line indicates a large internal leak   [Reply]   [No Email]
John Heine 11-15-2009 11:47:37 71.97.197.178 343404 Report to Moderator	Re: JD 4020 transmission pump problems in reply to allenhughey, 11-14-2009 22:57:37   Have you checked free travel on clutch pedal?   [Reply]   [Send Email]
buickanddeere 11-15-2009 04:06:01 209.240.120.48 343340 Report to Moderator	Re: JD 4020 transmission pump problems in reply to allenhughey, 11-14-2009 22:57:37   As txjim said, the clutch is ruined. How long have you been using the tractor since there was any hint of a problem?   [Reply]   [No Email]
allenhughey 11-15-2009 09:05:08 66.203.227.81 343384 Report to Moderator	Re: JD 4020 transmission pump problems in reply to buickanddeere, 11-15-2009 04:06:01   about 3 or 4 months. I have cut hay with the tractor for a while since it started. I first thought maybe the clutch but shyed away from that because I never smelled the clutch burning like I do when a clutch goes out on my truck. Also I noticed that the hydraulic line that supplies the main hydraulic pump gets very hot so I thought that I might have an internal leak or maybe a stuck pressure valve but, Im not real familar with the hydraulics on this tractor.   [Reply]   [No Email]
Wilamayb 11-15-2009 12:39:07 12.189.122.98 343408 Report to Moderator	Re: JD 4020 transmission pump problems in reply to allenhughey, 11-15-2009 09:05:08   I agree that you need a clutch adjustment at minimum and probably a clutch job. I know a guy named Alan Huey. Kinda funny.   [Reply]   [No Email]
Gerald J. 11-15-2009 10:59:33 70.209.117.24 343395 Report to Moderator	Re: JD 4020 transmission pump problems in reply to allenhughey, 11-15-2009 09:05:08   There can be a hydraulic leak also, but the main problem is the clutch plate is shot or the clutch pedal has no free play. There should be about 3/4 inch of motion at the clutch pedal before there is any load of the clutch through out bearing hitting the clutch fingers. Gerald J.   [Reply]   [No Email]
Tx Jim 11-15-2009 03:35:58 67.142.163.29 343337 Report to Moderator	Re: JD 4020 transmission pump problems in reply to John T, 11-14-2009 22:57:37   allenhughey[/quote]I have a 1972 4020 with syncro transmission. The tractor looses power when climbing any kind of small hill. I have gotton the tractor stuck a few times and the rear tires can not even get moving at high rpm in lowest gears. Traction/drive clutch is slipping which in turn causes trans pump to stop/slow down pumping hyd oil. This post was edited by Tx Jim at 03:37:08 11/15/09.   [Reply]   [No Email]
allenhughey 11-15-2009 09:00:27 66.203.227.81 343383 Report to Moderator	Re: JD 4020 transmission pump problems in reply to Tx Jim, 11-15-2009 03:35:58   should there be a smell of the clutch burning. I had pretty much ruled that out because there was no smell.   [Reply]   [No Email]
Sean Benson 11-15-2009 00:26:34 98.192.243.63 343334 Report to Moderator	Re: JD 4020 transmission pump problems in reply to allenhughey, 11-14-2009 22:57:37   Check the hydraulic filters   [Reply]   [Send Email]
allenhughey 11-15-2009 00:35:33 66.203.227.81 343335 Report to Moderator	Re: JD 4020 transmission pump problems in reply to Sean Benson, 11-15-2009 00:26:34   Already have replaced the filter and checked the screen. Still no change.   [Reply]   [Send Email]