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NW Iowa | You have a bad unit. The new cab susp software will let it rest in the middle if it fails. If you leave it in lockup mode(failure position old software) it is hard on the rest of units, because they have pressure against them to keep them from moving. Have dealer hook EDT to it and tell you which one is bad. Or check power wire for 12V and signal wire for .4 - 4.5V. No voltage on signal = bad unit. Not hard to change. Backs are 15min job, fronts about an hr or so. You have pump the fuel out and slide tank away.
If it doesn't go one way then the other and rest in the middle and go green it failed. If it sits and blinks red it failed.
You either have the opti- ride or the opti- ride plus. The plus will have sensors on all 4 units, the regular on 2 units.
at the back of tractor, on top of left side of rear end, there are 2 solenoids on the cab susp hyd block with push in over rides to let the cab down. I don't believe it will stay there because the old software will keep pressure against them.
Edited by Massey1155 4/9/2019 16:01
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MF 8650 Cab Suspension
