4300 Range Shift Repair

   / 4300 Range Shift Repair #21  
Roy, I'm particularly interest as I have a 4200 JD. Selecting the range I want can be aggravating at times.:(

Mine has always been that way too, especially finding 'B' range.

I am more concerned about the force necessary to push my PTO lever....
that one is hard, despite the fix I went through.

Yep, the PTO lever could be smoother operating too.
 
   / 4300 Range Shift Repair #22  
Thats unfortunate that the gear range can't be adjusted. Its not that I can't find N between A and B. Its that I can find N past C! And then its tricky to get back out of N and into A. Its like the whole thing is shifted forwards an inch. Does it sound like maybe the lever handle itself could be bent and causing me trouble?

Yep, the PTO lever could be smoother operating too.
I leave the Mid-PTO knob engaged cause I've had to hammer it to the on position with two feet of snow on the ground. Seems like a stupid design that can't be greased well enough to overcome the length and angles of the linkages.
 
   / 4300 Range Shift Repair #23  
Its that I can find N past C! And then its tricky to get back out of N and into A. Its like the whole thing is shifted forwards an inch. Does it sound like maybe the lever handle itself could be bent and causing me trouble?

In JP's #4 post above, you can see a lever stop in one direction, and the
tie rod does have threads. So, technically, you can adjust the tie rod
for length. It seems to me that bending the shifter lever against the
stop, or in the other direction should not change the gear engagment
unless you run up against the plastic finish bezel. Since there is no stop
when you go to C, I guess you could push the shifter forks past the
last detent. That does not sound good.
 
   / 4300 Range Shift Repair #24  
I do have a stop/detent at C. But I can also find another N after it. If the rod end is screwed out too much that would explain having a second N and having trouble getting back into A. Probably need to turn the rod end to make the linkage a quarter inch shorter.

And yeah, duh, bending the lever will have nothing to do with the engagement inside.
 
   / 4300 Range Shift Repair #25  
I went and tested my range shifter last night and I can feel the hard
stop at A very well, but the limit at C is much softer. No neutral past
C for sure.
 
   / 4300 Range Shift Repair #26  
jpinca; That was a great post. I have saved it future consideration but, I hope I never need to replace the shifter on my 4300 HST.
To that end; and w/o getting into the question of force and lack of lubrication as being the major cause of this problem; Could you please give me some idea (a photo would be ideal) of exactly WHERE I should lubricate the shift shaft. Thanks.
 
   / 4300 Range Shift Repair
  • Thread Starter
#27  
I didn't lube the replacement at all, I just wiped everything down with a clean cloth. The shaft I used is chrome plated and provides for very little friction with the case.

I suppose you could use a dry film lubricant, but I didn't have any and decided retaining dirt was a worse consequence than the lube benefit.

The only points where I could see friction being a problem are at the lever pivot and the bellcrank to case junction. Those have a big contact area with high to moderate pressure. YMMV
 
   / 4300 Range Shift Repair #28  
jpinca; That was a great post. I have saved it future consideration but, I hope I never need to replace the shifter on my 4300 HST.
To that end; and w/o getting into the question of force and lack of lubrication as being the major cause of this problem; Could you please give me some idea (a photo would be ideal) of exactly WHERE I should lubricate the shift shaft. Thanks.

Fluid Film works GREAT for all the linkages, it does not contain any solvents so it last's a very long time. Keep the area where the shaft enters the case lubed to help prevent corrosion.
 
   / 4300 Range Shift Repair #29  
Thanks for the info on fluid film. What do I have to remove in order to get at the are that needs to be lubed?
 
   / 4300 Range Shift Repair #30  
Thanks for the info on fluid film. What do I have to remove in order to get at the are that needs to be lubed?

Nothing...just lie down in front of the left rear wheel and you can access the linkages for the shifter (if a reverser transmission) and range levers quite easily. Pulling the left rear tire off would make it easier...but that's a lot of work (especially if the tire is filled).
Use the little straw in the nozzle to provide better directional control.
 

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