jdetig1 Posted November 24, 2021 Share Posted November 24, 2021 My 7140 shift a lot rougher between clutch pack such as 6-7 and 12-13 than any of our 7120 tractors. Is that just the nature of the beast or is something wrong or some adjustment need to be made? While chiseling shifting up or down between 6 and 7 is darn rough. Quote Link to comment Share on other sites More sharing options...
TheIHMan Posted November 24, 2021 Share Posted November 24, 2021 Start by recharging the accumulators that are behind the batteries on the left side of the tractor. They are 2 round canister's that face forward off the transmission control valve. Take them off and have your local dealer recharge them with nitrogen. Most of the time they will take a charge but sometimes the bladders inside them will burst in which you will have to get a new accumulator. 2 Quote Link to comment Share on other sites More sharing options...
jdetig1 Posted November 24, 2021 Author Share Posted November 24, 2021 Accumulators we’re charged this spring. Maybe one could be bad or something idk. Seemed like it shifted delayed or too soft before I had them charged. could it be regulated pressure in the transmission is just higher on the 40 series than the 20 series causing a harder shift? Quote Link to comment Share on other sites More sharing options...
jass1660 Posted November 24, 2021 Share Posted November 24, 2021 No they all shifted the same. Had a 7120 and two 7140’s at the same time one was a 2 spd reverse and noticed no difference unless accumulators were low or bad. Quote Link to comment Share on other sites More sharing options...
bitty Posted November 24, 2021 Share Posted November 24, 2021 24 minutes ago, jdetig1 said: Accumulators we’re charged this spring. Maybe one could be bad or something idk. Seemed like it shifted delayed or too soft before I had them charged. could it be regulated pressure in the transmission is just higher on the 40 series than the 20 series causing a harder shift? Regulated pressure should be the same. An accumulator can go bad at any time or have a slow leak Quote Link to comment Share on other sites More sharing options...
jdetig1 Posted November 24, 2021 Author Share Posted November 24, 2021 Accumulators are all the same correct? So I could just swap ones off my smooth shifting 7120 and put them on my rough shifting 7140 to see if anything changes. 1 Quote Link to comment Share on other sites More sharing options...
bitty Posted November 24, 2021 Share Posted November 24, 2021 2 hours ago, jdetig1 said: Accumulators are all the same correct? So I could just swap ones off my smooth shifting 7120 and put them on my rough shifting 7140 to see if anything changes. Same thing and same pressure so yes Quote Link to comment Share on other sites More sharing options...
ISP1086 Posted December 3, 2021 Share Posted December 3, 2021 Our 7140 does the same thing and our MX270. I just assume it’s normal. Quote Link to comment Share on other sites More sharing options...
756puller Posted December 3, 2021 Share Posted December 3, 2021 The mx270 can be calibrated thru the a post but it does have an accumulator also Quote Link to comment Share on other sites More sharing options...
Maynard Posted December 6, 2021 Share Posted December 6, 2021 On 12/3/2021 at 10:44 AM, 756puller said: The mx270 can be calibrated thru the a post but it does have an accumulator also The transmission (regulated) accumulator did not appear until the next generation MX Magnums. Quote Link to comment Share on other sites More sharing options...
756puller Posted December 6, 2021 Share Posted December 6, 2021 My bad I could have swore Ive seen one but it has been a long time since I've delt with a first gen mx Quote Link to comment Share on other sites More sharing options...
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