Posted by caterpillar guy on August 11, 2022 at 05:58:49 from (47.26.95.42):
In Reply to: JD 6420 air seat posted by Joe Reichert on August 10, 2022 at 13:09:19:
If it is like some truck seats, they have a leveling valve to let the seat back down when you get off from it. This gives a preset height. The little accordion like bladder that is connected to the leveling valve for that gets a crack or hole in it and then your seat will not hole ride height . IT will also not always lift with air as you will hear it leaking. Other wise I would suspect either a bad air bag/spring or a bag air line. If an electrical connection is bad they will not pump air either. So pull the seat out and hook to your air compressor with an electrical tester see if you have juice to the air pump in the tractor and if you have leaks and on what. You can probably buy air seats or parts from truck junkyards cheaper than tractor dealers just because of the difference in volume. More selection also.
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