shuttle shift doesn't engage

countrygal 327 · Nov 21, 2009

I have a Kubota M6040 with the loader and shuttle shift. When I went to use the tractor today it would shift into reverse but not forward. I noticed the last time I used the tractor is didn't seems to want to shift into forward. The tractor only has 160 hours on it. Any one have any suggestions on how to fix it or what to look for since I have hay coming in next week and really need to fix it fast. Thanks.

Anonymous-0 · Nov 21, 2009

Is the tractor standard shift or hydraulic shuttle.. Do you have to depress the clutch to shift gears..?

Bruce from Can. · Nov 21, 2009

If it only has 160 hours on it , this unit must still be under warranty, call the dealer.

just another old geezer · Nov 21, 2009

check the oil level in the transmition first.

Bruce Hopf · Nov 21, 2009

Has a pin in the linkage come out, and the linkage rod itself fell out of place? Bruce.

farmer boy · Nov 22, 2009

Is it hydraulic or mechanical? Does the lever move at all(on a hydraulic I presume it would) on a mechanical it may not. Depending on how the linkage is done(on a mechanical)something may be physically be blocking it. If it's a hydraulic and the handle is moving take it to the dealer. Nothing you ca do. If it's a mechanical run in about 4 low, clutch and see if it will grind into foward. If not take it to the dealer. Although i have spent a bit of time on a 7040 hydraulic shuttle I'm not sure if the shuttle is electric or an actual mechanical linkage somewhere. New Holland is all electric and if Kubota is the same you may just have to replace the shuttle unit. If it's not than it may be a bit more complicated than that.

countrygal 327 · Nov 22, 2009

The shuttle shift is hydraulic and yes it goes into reverse and the tractor moves backwards but if you put it in forward it doesn"t move at all. I put the lever in what was suppose to be forward with the tractor off and tried to start it,it started just like it was in neutral.

countrygal 327 · Nov 22, 2009

The shuttle shift is a hydraulic-shuttle shift. Yes you have to depress the clutch to shift the gears but according to the owner's manual you can be moving "slowly" to change direction i.e. forward or backward. I always stop the tractor and push the clutch in to change the shifter.

countrygal 327 · Nov 22, 2009

I plan to take the cover off tomorrow and look at the linkage. I'll let you know if there is a pin out of the linkage. If a pin was out of the linkage would it still move in reverse but not move in forward? I have no idea how the hydraulic-shuttle shift works. I would like to find an exploded view of it if possible but so far haven't been able to locate one on the internet.

countrygal 327 · Nov 22, 2009

Good idea. I had thought about that but if the oil level is low wouldn't that affect the reverse also? I'll check it before I start taking the cover off. I don't remember how long the warranty is on this tractor does any know?

Tx Jim · Nov 22, 2009

(quoted from post at 03:26:58 11/22/09) The shuttle shift is a hydraulic-shuttle shift. Yes you have to depress the clutch to shift the gears but according to the owner's manual you can be moving "slowly" to change direction i.e. forward or backward. I always stop the tractor and push the clutch in to change the shifter.

Having to depress clutch & moving "slowly" to shift shuttle indicates it's manual not hyd shift. Most hyd shuttles I've been around one shifts without depressing clutch. My M4900 Kubota has a manual shuttle that I wish was hyd.

Sounds as if you have a linkage loose or out of adjustment.

countrygal 327 · Nov 22, 2009

Thanks for the reply Jim. It is calling it a "hydraulic shuttle" in the owner's manual. Do you have any idea where I can get an exploded view of the shuttle shift on the internet? Thanks.

farmer boy · Nov 22, 2009

If it starts in foward then just replace it. It's likely to be a an electric unit. It could just be a sensor within the unit that isn't letting it know that it's in foward gear. Possibly the same sensor that it uses to let it know it's in neutral and it's safe to start. It would also be a wire running down the shaft but unlikely. It could be a mechanical linkage even with the described startng problem. Could be a sensor that is used with the mechanical linkage but I just doubt it. It's possible that they have two sensors so the computer knows if it's in foward or reverse and when it's receiving no signal it will start. On messicks(link below) they show it as a mechanical linkage but make no mention of whether it's the hydraulic shuttle or mechanical shuttle. Either way take it off (the cover) and find out. It chould also say hydraulic shuttle on the side of the hood.
Messicks M6040

Mike (WA) · Nov 22, 2009

I'm thinking it has to be hydraulic, if the manual says you can change directions while "moving slowly"- my MX5000 has manual, and you can't be moving AT ALL, or you get grinding.

If it starts in forward (but supposed to start only if in neutral), my money's on a disconnected linkage somewhere. Does the lever "feel" the same when you shift into forward as it did when working properly?

RodinNS · Nov 22, 2009

I'm not familiar with the tractor... but if it's a true hydraulic shuttle I'd expect it to have an electrical type switch on the steering column. Mechanical shuttles would have an actual gear shift lever.

I suppose it is possible it has an older style reverser that is hydraulically shifted... but that is generally a more 'industrial' type of thing rather than an AG tractor.

At any rate, if it's got a manual lever of some sort, start by checking the linkages. Beyond that it's likely to be internal; possibly a busted syncro. If it's the transmission I think it is (8x8)... then a busted syncro would not be 'abnormal'. It's also not 'cheap'.

If it's an electrical type shuttle I'd start by looking at wires and fuses, then go from there.

BTW, if it is the 8x8 manual shuttle I'm thinking of, it can very much be shifted while moving. Shifted at full tilt for that matter... but that would not be healthy for the transmission.

Rod

countrygal 327 · Nov 22, 2009

Thanks for the suggestions Rod. I'm going after the shop manual tomorrow and then I'll have it to look at when I start tearing into the tractor. A friend said he remembered my son tighting a bolt below the shift lever. Once I get the plate off that's the first thing I'm going to check, then I'll check the linkage as you suggested. Thanks again.

countrygal 327 · Nov 22, 2009

Thanks for the post Mike. Actually now that I think about it the shifter seems to not go as high up as it did before. Looks like the linkage may be the problem. I'll post as I find out more about the problem/solution.

I also talked with someone I know that has 2 tractors with shuttle shift like mine and he said he has never had a problem with it. I know one of the tractors is at least 20 years old. Thanks again for the post.

Tx Jim · Nov 23, 2009

(quoted from post at 10:58:14 11/22/09
Do you have any idea where I can get an exploded view of the shuttle shift on the internet? Thanks.

Kubota doesn't offer a parts breakdown such as JD & CNH on the internet that I'm aware of but I wish they did.

countrygal 327 · Nov 25, 2009

I knew I hadn't found the parts breakdown on the internet. I ordered the shop manual and hope to have it by Wednesday. Doesn't help much for hay coming in on Friday. Hopefully it is a good manual. Thanks for your post.

countrygal 327 · Nov 28, 2009

Thank all of you who posted trying to give me ideas on troubleshooting my shuttle shift that didn't engage. The good news is that it was the shuttle shift cable!!! Apparently I'm not the only one that was having a problem with the shuttle shift not working and my Kubota dealer said the problem was the cable. After locating the only cable within 100 miles of me and having the cable installed my shuttle shift now works. Thanks to all of you for your help.

countrygal 327 · Nov 28, 2009

Please read my current post on this subject. You hit the nail on the head because it was the shuttle cable and it wasn't working properly from the start.
Once the new cable was installed the tractor worked properly. Thank you for your suggestions and the web page.

shuttle shift doesn't engage

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