B 6000 4X4 attachements

[Oldie68]

Hi all, recently recently acquired this little unit. Wondering if these attachements are kubota or not. Ive posted some posts regarding the tipper arm hydraulic cylinder mount tabs which had been welded (not very well it seems) prior me buying it. I ended up taking it to a professional welder who fabricated 2 new mount tabs and added a reinforcing plate.
Working some bugs out still like the charging system not working, and since I got it in warmer weather, wasnt aware of the steering not working as expected in below freezing temperature. Seemingly once the transmission oil is/has beem churned for some time I'm able to operate the steering to some degree but not like warner weather
Does the transmission oil lubricate the lower portion of the steering mechanism. I'm wondering if there maybe water from condensation/less than regular maintenance. Whuch I'll remedy once temps warm up.
Charging system apparently not working, when running with a voltmeter on battery terminals only reading 11V.

 

[Vigo327]

Hey there. I remember the tractor from the other posts. I have a 6100 so it piqued my interest immediately.

The stiff steering in cold weather will almost certainly be alleviated by fresh fluid. As you mentioned, it is likely due to water in the fluid/housing. It does not share fluid with the transmission.

Im familiar with the Kubota B219 loader and B670 backhoe that could have come on these tractors and have each of them here to look at.

I personally suspect the loader is not a 'production' piece because it is vastly overbuilt for the tractor in some ways but not others and is fairly ornate in terms of having a lot more metal and man-hours in it than was strictly necessary to get the job done. Compare to the B219 i mentioned. The attachment points on the bucket also suggest some trial-and-error was involved there. Having said that, it looks great and depending on how high it lifts (looks like the lift cylinders/geometry would limit lift height?) I might be real happy to have it if it were mine.

The backhoe looks like a mass-production boom/arm from a very small mini-excavator adapted into a backhoe attachment, so also 'homemade'. Other than those nasty cylinder anchors you already fixed, the whole thing is impressive to me. It's tucked in incredibly close to an already small machine. While the size of the arm itself is probably smaller than most people would pluck out of thin air in their 'dream build' for a B6000, it looks well executed given the 'main ingredient' being worked with.

A lot of packaging detail went into the whole rig. IF im right about both being substantially custom pieces, whoever built them was very fastidious, to the point i suspect the hydraulic anchors on the backhoe arm were either 'unfinished' (ie test-fits before doing a nice final version) or done by an entirely different person after the first person had to give up the project.

As far as the charging circuit, there is a stator winding inside the fan pulley which feeds AC voltage to a rectifier assembly under the dash. I think. I dont know in any great detail how this specific system works but you should be able to read AC voltage coming out the stator winding that should be greater than desired battery voltage (unless the rectifier thing has a transformer inside? doubtful?) and Dc voltage at or slightly lower than that coming out of the rectifier. Check for voltage drops across the 40+ year old wiring before condemning hard parts.

 

[Oldie68]

Hey there. I remember the tractor from the other posts. I have a 6100 so it piqued my interest immediately.

The stiff steering in cold weather will almost certainly be alleviated by fresh fluid. As you mentioned, it is likely due to water in the fluid/housing. It does not share fluid with the transmission.

Im familiar with the Kubota B219 loader and B670 backhoe that could have come on these tractors and have each of them here to look at.

I personally suspect the loader is not a 'production' piece because it is vastly overbuilt for the tractor in some ways but not others and is fairly ornate in terms of having a lot more metal and man-hours in it than was strictly necessary to get the job done. Compare to the B219 i mentioned. The attachment points on the bucket also suggest some trial-and-error was involved there. Having said that, it looks great and depending on how high it lifts (looks like the lift cylinders/geometry would limit lift height?) I might be real happy to have it if it were mine.

The backhoe looks like a mass-production boom/arm from a very small mini-excavator adapted into a backhoe attachment, so also 'homemade'. Other than those nasty cylinder anchors you already fixed, the whole thing is impressive to me. It's tucked in incredibly close to an already small machine. While the size of the arm itself is probably smaller than most people would pluck out of thin air in their 'dream build' for a B6000, it looks well executed given the 'main ingredient' being worked with.

A lot of packaging detail went into the whole rig. IF im right about both being substantially custom pieces, whoever built them was very fastidious, to the point i suspect the hydraulic anchors on the backhoe arm were either 'unfinished' (ie test-fits before doing a nice final version) or done by an entirely different person after the first person had to give up the project.

As far as the charging circuit, there is a stator winding inside the fan pulley which feeds AC voltage to a rectifier assembly under the dash. I think. I dont know in any great detail how this specific system works but you should be able to read AC voltage coming out the stator winding that should be greater than desired battery voltage (unless the rectifier thing has a transformer inside? doubtful?) and Dc voltage at or slightly lower than that coming out of the rectifier. Check for voltage drops across the 40+ year old wiring before condemning hard parts.

Hi, and thanks for the compliments on the rig. I know nothing about the attachments but the guy I bought it from said all the hydraulic hoses had been recently replaced presumably before he got it too. I kinda suspect the person I got it from probably broke those anchor points and had an amateur welder try n fix it, but of course he wouldn't admit to that, never!
I'm findin a bit of information about the rectifier and stator/dyno, just have to obtain more info on diagnosing and replacement parts if any especially the rectifier (internal components such as diodes may or may not be able to be replaced if not re fabricated somehow). Kinda would like to have the charging system working versus charging the battery all the time. From what I can see and determine the lower portion of the steering gear is inside the transmission case and therefore i suspect the oil as I indicated ma have some amount of condensation/water in it allowing it to freeze therefore making the steering difficult to impossible without breaking something. I only found this out when attempting to use after the cold weather hit. I did get to use it once however, it turned right enough to get me to where I wanted to use it then seemed to free up as I worked it so that's my thought on that part. Last time I chose to try it again it would steer either way very wheel maybe tool cold and didn't get oil warmed up enough ended up using steering brakes to get it back to where I had it parked.
So I'll be draining tansmission oil in spring and refilling. it also doesn't see to be full on the dipatick so shouldn't cause any real damage.

 

[Vigo327]

The steering gearbox does not share fluid with the transmission, and it's actually not even bolted to the transmission. The large metal piece under the steering gearbox is mostly just an empty metal box other than the input shaft passing through the middle of it, and the 4wd driveshaft dropping down out of it. It is basically the frame in that area of the tractor, but has no fluid in it and is actually open to the air on the bottom if you were to get under and look up at it.

 

[Oldie68]

The steering gearbox does not share fluid with the transmission, and it's actually not even bolted to the transmission. The large metal piece under the steering gearbox is mostly just an empty metal box other than the input shaft passing through the middle of it, and the 4wd driveshaft dropping down out of it. It is basically the frame in that area of the tractor, but has no fluid in it and is actually open to the air on the bottom if you were to get under and look up at it.

Thanks I'll have to check that out. I just found i couldnt steer the darned thing in the cold.

 

[Vigo327]

Make sure and check the fluid in the hubs behind each front wheel as well. If that was water contaminated and turned into a frozen slurry it would cause the same issues. Water intrusion there is probably slightly more likely than in the steering gearbox itself.

 

[Oldie68]

Make sure and check the fluid in the hubs behind each front wheel as well. If that was water contaminated and turned into a frozen slurry it would cause the same issues. Water intrusion there is probably slightly more likely than in the steering gearbox itself.

I might agree byt I dont see how it would affect the mechanism from the steering wheel through to the pitman arm.

 

[Oldie68]

The steering gearbox does not share fluid with the transmission, and it's actually not even bolted to the transmission. The large metal piece under the steering gearbox is mostly just an empty metal box other than the input shaft passing through the middle of it, and the 4wd driveshaft dropping down out of it. It is basically the frame in that area of the tractor, but has no fluid in it and is actually open to the air on the bottom if you were to get under and look up at it.

I've watched a video on re & re on a yanmar/grey tractor steering fear on a site called bundybearsshed.com
Pretty informative guy.
I sent gim an enail about tge kubota B6000 if theres any similarity.

 

[California]

I've watched a video on re & re on a yanmar/grey tractor steering gear on a site called bundybearsshed.com
Pretty informative guy.
I sent gim an enail about tge kubota B6000 if theres any similarity.

I looked for internal parts for the steering box on a 1980 Yanmar YM186D, and found the box was sourced from the same supplier as the steering box on the Datsun 240Z roadster from the 1970's. Internal parts were the same. Kubota may have used that generic steering box, also.

 

[Vigo327]

Im assuming your location/weather is stopping you from really examining it. I think once you get to looking at it and turn the first bolt you'll be all out of reservations about it. I'm about to swap that whole assembly between a 6100 and 7100 I have sitting here. If i run into anything tricky i'll sure post back about it. I think the main thing anyone new to steering parts might run into and have a hard time with is separating tapered ball joint connections such as from the pitman arm to the steering rod, or steering rod to the steering knuckle etc.

IF you do fluid changes in the steering gearbox and front hub assemblies and still stuffer tight steering, there is a preload adjustment on the gearbox someone might have 'experimented with' before they gave up on the tractor.. like how they experimented with those backhoe cylinder mounts .