B7000 sudden loss of drive in all gears

ABW

New member

Equipment
B7000
Mar 8, 2021
4
0
1
UK
Greetings all from the UK.

I have had a B7000 for nearly a year and it has been great until last weekend. I was pulling a small roller around a small paddock and all went well. On completion, I reversed the roller back to its storage location, got off to unhitch it, which was fine. Then I sat back down and found I could not drive forward or backward (either in 4WD/2WD, High/Low ratio)in any gear. I also noted the PTO stopped working as well. The engine just kept running fine.

I had adjusted the clutch about 4 weeks ago as I suddenly found the pedal had to go much further down to disengage the clutch. I achieved the set 12mm gap on the stop bolt with about 3mm of free play, but noted I had to screw out the adjuster quite a way compared with where it was.

Today, upon further examination, I went underneath to look at the two access holes and the one on the clutch housing. With the engine running, I noted the clutch was rotating in the inspection port and also that the output prop shaft was also rotating OK. On further inspection at the point just before it goes to the gearbox under the front drive prop-shaft, there seems to be a 'coupling' with 2 flanges on it and I note that (with the engine running) rotates as well, yet the splined shaft going to the gearbox is dead still. With the engine off, I managed to feel it and it just rattled and I just noted it was not engaged on the splines on the shaft going to the gearbox.

Is this coupling supposed to rattle and be so loose (or should it have some form of rubber acting as a shock absorber)? I wonder also if there should be a pin holding it in place, as there is a small hole on the splined section of the shaft? has anyone any thoughts and also information if I can still get spare parts for it and do we have a part number/drawing of it? I can probably get a photo of it in situ if it helps.

Many questions from a new member I know, but look forward to any thoughts/help!

Regards

Adrian
 

ABW

New member

Equipment
B7000
Mar 8, 2021
4
0
1
UK
So Folks, no thoughts so far, but I have a small update and picture(s) that may prompt some thoughts...

Upon further inspection, I note that if I hold down the clutch pedal while under the tractor and getting my hand in the access panel, I can grab the drive shaft out from the clutch and move it back over the splines from the front shaft. When doing this, it is very loose and will simply come off the front splines again with only a little movement from me.

Thus now I can get drive back, but this flange like joint/coupler still rattles a lot, so is there a part number for it anywhere and I will see if there is a supplier that will sell one for me!

If any other B7000 /7001 owner would kindly take a photo of their's (see mine attached), we may get to understand if it needs to have a pin fitted (you can see the 2 holes in the coupler that may need pins)?

Also is there any video or stamps showing how to split a B 6000/7000 series Kabota to replace the clutch etc?

Thanks

Adrian
 

Attachments

hagrid

Active member

Equipment
BX23S
Jun 11, 2018
137
26
28
Pittsburgh
I think it's a rag joint... maybe lost the roll pins and now it walks itself off the splines?
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
21,679
387
83
Sandpoint, ID
Clean out the holes in the shafts, re-align the holes in the joint with the holes in the shaft.
Install a roll pin and either a second smaller roll pin inside the larger one (locks it in) or use tie wire through the pin to keep it in place.
I little movement on the joints is acceptable and normal especially with it's age.
 

ABW

New member

Equipment
B7000
Mar 8, 2021
4
0
1
UK
Thanks guys,

It answered the question about how the rag joint stays on the splines - I will get a set of roll pins now I know they are supposed to be there. Thankfully, I can reach the splines/holes from underneath and use my set of pin drivers to get some in (I assume about 3mm).

Does anyone have a picture of their's so I can confirm etc?

I have managed to track down a new flexible rag joint in Belgium along with a workshop manual which will help in future.

Now with the rag joint in place, I can start the tractor up and note there is not a lot ( I can't visually see any when running) of play in the shaft (which is good) and so my concern over the pilot bushing may be have been eased now.

The clutch which I adjusted before I knew what this fault was, needs adjusting again now I have reconnected the shaft to the rag joint, as the tractor has a very small creep forward/backward when the clutch is in. If that does not do it, then I guess I will have to replace the clutch as I only have a few more turns of adjustment on the clutch pedal joint/spring assembly. Hope there is a video of someone splitting one of the 6000/7000 series - just in case as I have been quoted over £1000 for a local workshop to do it!?

Best Regards

Adrian
 

D2Cat

Well-known member
Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
9,622
714
113
40 miles south of Kansas City
Adrian, you can get a lot of help splitting that tractor if it comes to it. Once you have the steps in the process in your mind the work is pretty straightforward and simple. Hopefully you'll not need to do that yet. Good luck.
 

ABW

New member

Equipment
B7000
Mar 8, 2021
4
0
1
UK
Thanks D2Cat,

I am awaiting a box of roll pins and also a spare 'rag' joint from Belgium and will see if I can replace it from underneath without needing to split the tractor. I can then use new pins and see how it goes. I note with the joint in the correct place ready to receive a 5mm pin, that the clutch needs to be readjusted, so I guess the shaft needs to be firmly in place before any future adjustment is made.

I will see if there are any suitable video's on you tube etc about splitting the 6000/7000 series tractor.

Best regards

Adrian