John Deere 8300 MFWD clutch repair

How to rebuild Mechanical Front Wheel Drive Clutch Pack on 8000 series John Deere tractors.

[@KruppWT]

Hello, I have a question for you, I have a tractor 8400 from 99, and it has a problem with gears, sometimes it does not want to shift from 13 to 14 and beyond, and it is both cold and hot, it just switches nothing happens until 13, the screen just shows the 13th gear. Sometimes this problem disappears and he turns on 14-15-16 without problems, I don't know what the problem is, and whether it is possible to fix it myself in the conditions of a simple workshop, thank you!😢

[@iowafarmer93]

Do you have 4th reverse? If you do then it’s not a problem with the transmission mechanics but probably computer. I know when the tractor is really cold it will not shift past 14th until it warms up a bit. It might just be the solenoid valve for that gear. It might have a loose wire going to it that’s not making a very good connection. No matter what is causing the problem it should be throwing a code and blinking the transmission light. If you can give me the code that is coming up that would help a lot. If you don’t know how to read codes I can get that info for you as well.

[@KruppWT]

@@iowafarmer93 ,Congratulations, the temperature at that time was 58, and it did not turn on, I was towing a 10-ton barrel of water. From the morning of the second day, I drove to the field again, the temperature of the box was 22 and it perfectly switched to 14 without problems, then after a couple of days it refused to switch, and it was like that for 2 days, then it switched again, the problem then appears and disappears on its own . I only have one error on the screen, it's HCU 58, it's raising and lowering the hitch from the outside of the tractor, both buttons are broken, it doesn't throw any more errors. If it's an electrical part, and I'm now 80% sure that this is the case, then I'll have to contact an electrician, so I can't do anything about it myself, because I don't know the working principle of this gearbox perfectly. P.S Yes i have 4gear reverse.

[@iowafarmer93]

Ok so you only have one code on the side screen. That might be the only active code. If you remove the fuse panel cover and take a fuse from a spot marked “spare” and place it in the spot marked “diag” you will enter the diagnostic mode on the computer. Step 2. Turn ignition on but do not start the engine. Step 3. You will see on your corner post screen it says “dia” using your turn signal, turn to the right one click until it says all. Step 4 pull turn signal lever towards you and it will start to go through the different computer errors. If pulling the lever back does nothing it is most likely because it is broken. There is a work around if that is the case. After going through the codes and writing them down you can clear the codes by switching on and off your hazard switch while it displays “END” after the sequence of codes. After retrieving the codes you may post them here. I will only need the codes from the PCU and CCU. The rest will not be of any help to this issue. If there are no codes then I’m afraid I can’t help you any further. Does the tractor have a top speed of 30 kilometers ( 18 mph ) or 40 kilometers ( 24 mph) ?

[@iowafarmer93]

I just thought of something that is a very common problem. When this happens simply take your foot and pull your clutch lever up a little farther. I am almost sure this will fix your problem.

[@KruppWT]

@@iowafarmer93 ,Thank you for the tip, I will definitely check it, now it shifts again without problems, but when that happens I will check the clutch life hack