Author	[Modern View]
Morgan Flowers 02-11-2013 16:36:37 71.9.216.60 Report to Moderator	Hello all, We have a John Deere 4630 powershift and have had it a little over 2 years. Ever since we have had it, when we go to turn it tries to push the front wheels. It does turn, but it will tear up the field some from where the tire tears up the grass. It feels like the differential lock is partially engaged. The differential lock pedal is stuck. It doesn't look rusted up or anything, just looks like it hasn't been used in years. I was wondering if anyone had any suggestions on what could possibly be wrong with it. I understand a full diagnosis would be hard over the internet but was just wondering about where we could start checking. It will probably be a couple months before we look at it. Would like to have it fixed before we use it this summer to bale hay. It has done this way for the past 3 summers that we have used it and makes it aggravating for getting into tight spaces. The brakes work great btw. Thanks for your help! Morgan [Reply]   [No Email]
JDBert 02-12-2013 07:09:56 184.94.238.208 Report to Moderator	Re: John Deere 4630 in reply to Morgan Flowers, 02-11-2013 16:36:37   My 4840 diff pedal was stuck in the linkage under the dash- if it seems to not engage or disengage properly take the dash off and work in some WD-40 or penatrating oil of your choice. [Reply]  [No Email]
M w J 02-11-2013 18:58:58 66.6.13.78 Report to Moderator	Re: John Deere 4630 in reply to Morgan Flowers, 02-11-2013 16:36:37   The differential lock linkage can overcenter under the dash then the pedal will not move check there first. [Reply]  [No Email]
LarrySTN 02-11-2013 18:31:40 69.68.35.50 Report to Moderator	Re: John Deere 4630 in reply to Morgan Flowers, 02-11-2013 16:36:37   Find the oil line that pressurizes the differential lock and disconnect the line, if the line passes oil with the diff lock disengaged the valve is leaking pressure through it. with the line disconnected try turning the tractor to see if the tractor steers more normal. I have seen several deeres with the diff lock valve bad. [Reply]  [No Email]