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JLynch 
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Joined: 18 Apr 2021
Location: - Clear Lake,Wi
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 Topic: 8070 shifting problem
Posted: 19 Apr 2021 at 9:57am |
Have a 8070 with power shift, it is hard shifting from park to High or Low, and then hard to shift back to Park. Have to let the tractor roll a little to shift to park, only 4100 hrs on this tractor, very well maintained. I have tried a few things, like higher RPMs, clutch inching, clutch braking, shift to 1st gear inching ahead, inching in reverse, best that I can come up with is to roll till the shifter moves to neutral position.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 19 Apr 2021 at 10:21am |
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New shifting cables will reduce the effort required. The Power Shift trans has a "creep" tendency with cold oil. Shifting into reverse (standing still) and applying pressure to the shift lever while lightly feathering the clutch pedal usually allows it to shift into neutral easier. Technique. Have you ever tried to get a 4430 John Deere out of park when on a hill with a load of corn behind it ?? There is technique to that as well.
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JLynch
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Location: - Clear Lake,Wi
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Posted: 19 Apr 2021 at 10:28am |
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Can I adjust the shift cable at all ?
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jiminnd
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Joined: 16 Sep 2009
Location: Rutland ND
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Posted: 19 Apr 2021 at 10:28am |
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I had similar issue with 8030, I used the reverse trick and it help me for years.
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1945 C, 1949 WF and WD, 1981 185, 1982 8030, unknown D14(nonrunner)
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DrAllis
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Posted: 19 Apr 2021 at 10:44am |
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You can kind of prove it to yourself by doing this: holding the brakes and it doesn't want to come out of gear....just shut the engine off.....wait a few seconds.....shift it out of gear. If that works, it is drag of the cold transmission oil. LOW range will be worse than HIGH range.
No adjustment of the range shifting cables will cure that.
NEW cables will improve it because a new cable is always easier to move than a 40 yr old one.
Edited by DrAllis - 19 Apr 2021 at 10:46am
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NEVER green
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Location: MN.
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Posted: 19 Apr 2021 at 11:01am |
I seen one that had dirt and corn cobs packed fully around the boot and shifter, didnt help.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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JLynch
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Posted: 19 Apr 2021 at 7:17pm |
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How big of a job is it to replace the cables ?
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DrAllis
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Posted: 19 Apr 2021 at 7:45pm |
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Back in 1982-86 I could change one out in a couple of hours. The main cable (large) is the one to change. DID YOU TRY SHUTTING THE ENGINE OFF?? OR USING REVERSE ??
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Mikez
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Posted: 19 Apr 2021 at 7:59pm |
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has anyone successfully oiled them before
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DrAllis
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Posted: 19 Apr 2021 at 8:38pm |
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NO. They have a plastic liner inside that is worn out !! The new replacement cable is much lower drag than any old cable. Until one actually makes the swap, they will never believe it.
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Mikez
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Posted: 19 Apr 2021 at 8:42pm |
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ok was just wondering
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JLynch
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Posted: 21 Apr 2021 at 3:49pm |
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Tried every think that you said to do, and had no good results, now I have ordered new cables, hope they are easy to replace, do you know of a you tube video to watch ?
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7050..8070
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