New Owner of a YM165

[rScotty]

I have a couple of big wrecking bars, prybars, to get leverage on opposite sides of the pto coupling, to pull it off the tractor's shaft. After applying penetrant, vibration, etc. (Not heat).

Yikes! Do you have to do that often?

I remember one Yanmar PTO pump I worked on - in fact it was for one of Yanmar's own 3pt backhoes - and it appeared to be stuck fast. Turned out to have a nearly invisible set screw in the collar that connects the PTO shaft to the hyd pump. The collar had rubbed on something at some time and blended the set screw into the collar surface.

 

[rScotty]

Gioacchino, a couple more thoughts on the heat situation. I'm sure you've thought of these but have to check. Should that gauge & sender be checked for accuracy? Did you look at both ends of the upper hose (hose-to-block) to make sure there's no blockage? And does the fan itself look like an OEM part?

 

[California]

Yikes! Do you have to do that [prybar] often?

It's a tight maze where you reach in to attach/detach the pto pump. It's hard to get in there to tug directly on the pump, so it's easier to reach in with the two prybars. it takes minimal force on the prybars to do what is difficult by hand, in such an awkward area.

This is the 3-point backhoe sold as OEM for YM240 and also as OEM Kubota in the late 70's, the backhoe where a chain provides the side to side swing. I think it's designed to be very close to the tractor to minimize overhang weight.

Photos: My backhoe and one on Ebay in Yanmar colors.

 

[gioacchino]

Gioacchino, a couple more thoughts on the heat situation. I'm sure you've thought of these but have to check. Should that gauge & sender be checked for accuracy? Did you look at both ends of the upper hose (hose-to-block) to make sure there's no blockage? And does the fan itself look like an OEM part?

I am considering testing the gauge for accuracy. Perhaps by boiling it? I’ll be honest though, it was kind of a pain to get it in the tractor so I’m trying to avoid taking it off again. Lol

Thoroughly flushed the radiator (it’s new anyways) and cooling system today. I never really thought it was clogged anyways, but for piece of mind. Didn’t get a chance to really run it much so no comments yet on if there’s any improvement.

I worked more on trying to get the backhoe off. To no avail. I’ve pretty much tried it all. Soaking in rust penetrant, tapping repeatedly with hammer, trying to pry it. I even went as far as wrapping a heavy duty ratchet strap around the pump and an “immovable object” and applied pressure. It gave me a headache so I put the tools up and came in the house. Unfinished projects like this drive me crazy though. At this point, my next idea is to either take the rear tires off to get a better purchase on the pump, or remove the pump from the backhoe (and it still being attached to the PTO shaft) and work on it that way. Removing the pump from the backhoe will be a mess as I’ll have to drain all the fluid, undo hoses, etc.

Just as I was walking around the tractor, I noticed a badge on the backhoe. I had previously missed this. It’s a model B670 Kubota backhoe.

 

[California]

Just as I was walking around the tractor, I noticed a badge on the backhoe. I had previously missed this. It's a model B670 Kubota backhoe.

View attachment 555049

Thank you !!! :thumbsup:

Others have suggested that my similar backhoe was made by Arps but I've never seen proof of that before, or found Arps. You just solved a mystery! Given that information I did some searching that you might be interested in:

Your tag:

Kubota Series B670

Mfd for Kubota

by

ARPS Division of Chromalloy

New Holstein, Wisconsin

Here's the builder's tag on my similar K650.

'K650' was also labelled as 'MFD for Yanmar' with green paint, and sold by Yanmar dealers, I think labelled Y600.

...and I see the reason there isn't much known about Arps is because that name was abandoned in the mid 80's. Here's a 2001 post describing Arp's history back then. This more recent Amerequip history hints that Arp was building Deere's OEM backhoes at the time your backhoe and mine were made. That likely explains why, when I looked for a replacement backhoe bucket tooth, the tooth's manufacturer told me the only application for that tooth was an obsolete Deere part number.

 

[rScotty]

Thank you !!! :thumbsup:

Others have suggested that my similar backhoe was made by Arps but I've never seen proof of that before, or found Arps. You just solved a mystery! Given that information I did some searching that you might be interested in:

Your tag:

Here's the builder's tag on my similar K650.

'K650' was also labelled as 'MFD for Yanmar' with green paint, and sold by Yanmar dealers, I think labelled Y600.

...and I see the reason there isn't much known about Arps is because that name was abandoned in the mid 80's. Here's a 2001 post describing Arp's history back then. This more recent Amerequip history hints that Arp was building Deere's OEM backhoes at the time your backhoe and mine were made. That likely explains why, when I looked for a replacement backhoe bucket tooth, the tooth's manufacturer told me the only application for that tooth was an obsolete Deere part number.

That's great research on the history. I enjoyed it and didn't know that the YBH600 was also made for Kubota. I had one of the lime green ones, for years. A buddy has it now. Still have some of the literature. It's lightweight, but a very muscular hoe, and really needed a heavier tractor to do it justice. Like all 3pt hoes of that era they could be dangerous - particularly on tractors with 3pt draft control
Here's some more info.
rScotty

 

[winston1]

Are you confident there is not a hidden retainer (pin/setscrew) on your pto coupling?

 

[gioacchino]

Thank you !!! :thumbsup:

Others have suggested that my similar backhoe was made by Arps but I've never seen proof of that before, or found Arps. You just solved a mystery!

Happy to help! Now, I need to look up the part number for a replacement hydraulic filter for the backhoe.

Are you confident there is not a hidden retainer (pin/setscrew) on your pto coupling?

I don't have any pictures at the moment, I will take some when I get home, but I am fairly confident there is not a set screw or anything like that. Last night as I was sitting on the couch, I actually texted the man I purchased the tractor from and asked if there were any secrets to getting the PTO pump off. He didn't mention anything about a set screw, just told me that there is a spring loaded pin to depress and that he doesn't recall taking the backhoe off for the past 8-10 years. Sounds like I've got my work cut out for me.

 

[winston1]

Have you found the spring loaded pin? Might look something like the pin on this over run coupler. https://www.northerntool.com/shop/t...MIobuz5OqW2wIVC4nICh30ygtcEAkYASABEgJ8SvD_BwE

 

[gioacchino]

Have you found the spring loaded pin? Might look something like the pin on this over run coupler. https://www.northerntool.com/shop/t...MIobuz5OqW2wIVC4nICh30ygtcEAkYASABEgJ8SvD_BwE

Yep. Spring loaded pin took some persuading with a hammer and WD-40, but it SHOULD function well enough now to be able to be removed. When (maybe I should say IF, lol) I get the backhoe off, I will get the pin into better shape.