X758 Deck leveling problems solved

[kgriffis]

I bought a X758 mower in October of last year. Excellent tractor but the 54" deck would not level properly. When I wanted a 2.5" height I had to put the dial on 3.5" and then the adjustments were way off. One side was adjusted all the way down and the other all the way up. I notified the dealer and he immediately came and saw what I was talking about. They took the machine back and "fixed" it and returned it but it still wasn't right. Instead of boring you I will say that it was back and forth 5 times for the same problem. Finally, with the help from this forum, I found the answer. I wish I could find the post that lead me in the right direction to thank the poster. It seems that the hangers underneath were not even. One was 1" lower than the other. They should be relatively even. I took two pictures, one of each side and attached the post that I had found herre. The dealer replaced the whole assembly which includes the rockshaft. It has since been returned and much to my satisfaction it is all right in the world. I am reposting this because if two of us had this problem there may be more of you out there.

:dance1:

 

[smote]

Glad they got it worked out for you. Thanks for posting back the solution to help others that may have the same issue.

 

[roostershooter]

Any one else have this problem. I just measured the arms on my x750 and the above pics could just as well be taken of my tractor.

 

[beenthere]

Rooster
You saying your deck is not level?
How about pics of yours? Maybe we can collectively help out.

 

[roostershooter]

Yes, my deck is not level, well it won't stay level, usually have to adjust it before I mow and I can only adjust the right side downward. The pics above are representative of my tractor, the left bracket hangs lower than the right. Right now as it sits, the left bracket has no remaining threads to adjust the deck, meaning if the left bracket was the same height as the right bracket there would be another 1/2 to 3/4 thread remaining. Here are pics of the hangers on my tractor, the first pic is the left side, the second pic is the right side. As you can see the right side still has adjustment left, the left side has none.

 

[kgriffis]

This is what was going on with mine. Somewhere I found someone who had the same problem and the answer was to replace the undercarriage, the part the deck hangs from. Since then, no problems. It adjusts with threads to spare. Mine was under warranty, I hope yours still is.

 

[roostershooter]

Still under warranty until April 2017. Do you have any part numbers as to what was replaced?

 

[beenthere]

From the sounds of it, and looking at this schematic from jdparts.com, looks like a mis-manufactured rockshaft.
Note that the lift brackets can only go on in 90 deg positions, and yours look to be off by maybe 10-15 deg. But clearly time to get back to dealer and discuss the problem..

 

[kgriffis]

Sorry I do not. I used to have the thread I found it on but I can't locate it. I agree with the rockshaft comment from beenthere.

 

[roostershooter]

Thanks. Going back to dealer today. I'll post any info.

 

[keerym]

Deere had a design flaw and issued a Product Improvement Program to fix this issue. Ask your dealer service manager to look up PIP 14MX241. This fixed my dads and my neighbors X730s. There is another guy down the road with an X739 that looks like it needs the same update. His yard looks terrible every time he mows.

 

[beenthere]

Someone by the name of "roostershooter" has had the same problem before, on a different forum.

http://www.mytractorforum.com/12-john-deere-forum/881217-x750-deck-leveling-cam-out-adjustment.html

If that link isn't allowed on TBN, then google "JD PIP 14MX241" and the "mytractor forum" will come up. At least did for me.

If the same "roostershooter" as here, I'm puzzled this problem isn't fixed after two years. What's up??

 

[bcp]

Those black things with the hooks that holds the leveling bolt heads aren't in alignment.



The two-pointed arrow shows two holes that I bet are the same from one side of the frame to the other. The red lines show how one hook-shaped-thing is about aligned with the bottom of the hole, while the other appears to be aligned 1/2-3/4 inch lower.

I would say the shaft they fit on has been twisted, or the hooks aren't clamped on parallel.

Bruce

 

[beenthere]

bcp
I think you nailed it !!

 

[jonsstihl]

thanks for the number. My 2014 x758 has the same issue. Mine went in for warranty work this spring and dealer said it was fixed but it wasn't. I will have to stop by the dealer with the number.

definitely sounds like a manufacturing defect.

my seat rails were seized so I couldn't check the transmission oil. I bought mine used, one year old with 250 hrs. I assumed the guy who drove it before was huge and hammered the crap out of the seat rails and used the mower as a step and twisted the rockshaft.

glad to hear others are having the issue and there is hope that I will get mine fixed under warranty.

 

[roostershooter]

Someone by the name of "roostershooter" has had the same problem before, on a different forum.

http://www.mytractorforum.com/12-john-deere-forum/881217-x750-deck-leveling-cam-out-adjustment.html

If that link isn't allowed on TBN, then google "JD PIP 14MX241" and the "mytractor forum" will come up. At least did for me.

If the same "roostershooter" as here, I'm puzzled this problem isn't fixed after two years. What's up??

That's me. Different issue and part, was in Sept. of last year. Tractor now at dealer. Tech said he would replace rockshaft and any other needed parts, all under warranty.:cool2: But before I went to the dealer I called John Deere Customer Service, asked about PIP for my unit. Answer....We're not showing anything for that model.:shocked: Maybe they just don't volunteer that kind of info.

 

[roostershooter]

Those black things with the hooks that holds the leveling bolt heads aren't in alignment.

View attachment 476586

The two-pointed arrow shows two holes that I bet are the same from one side of the frame to the other. The red lines show how one hook-shaped-thing is about aligned with the bottom of the hole, while the other appears to be aligned 1/2-3/4 inch lower.

I would say the shaft they fit on has been twisted, or the hooks aren't clamped on parallel.

Bruce

I took pictures and used a ruler for reference. Showed that to the tech.

 

[jonsstihl]

from the limited info I could find, the PIP seems to be about bushings but the problem we are having is the actual rockshaft is twisted. Or manufactured incorrectly. the brackets have square holes that engage square ends machined into the rockshaft. my guess is deere has a few parts that made it out with the square on the ends of the shaft not aligned properly but that issue should have been caught at assembly not in the field.

 

[keerym]

It's been a while since I've talked to my dealer contact. I believe the PIP had an A, B, and C repair depending on what they find. I could be all wrong about this part, but I do know others have had the same issue you are describing. My neighbor had the rockshaft and lift arms out of position like your picture. They fixed that but the level adjustment was still so far out of whack we couldn't get it level. Back to the dealer, new bushings the second time. On the second trip is when I told him to ask about the PIP and then the dealer acted different and got it all taken care of. I got the impression they thought my neighbor was just whining.

 

[MF283]

Bruce

Saw that myself & thought it was strange & not really knowledgeable enough to comment, thanks for taking the time to show that.

Ronnie