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Ooops. Deleted duplicate post.

Oooh, good point. There are even authoritative looking websites that have it backwards. EG: https://speceps.com/blog/cat-vs-john-deere-controls-difference-comparison.html which claims JD follows the ISO pattern and Cat follows the SAE pattern. So, Step 1: verify operation. <lol> Are they really...

The max lift capacity of your machine is under 1,000lbs -- at the pins, inclusive of the attachment. Considerably less at the tips of the forks. So a set of 5000lb forks is overkill, a light duty set will probably still be more than 1,000lbs capacity. And the light duty set will not reduce your...

"After" takes up less headline space than "As a result of".

Looking at the Canadian Kubota parts site, it appears there are two different port reliefs installed in the various outlets: "Port relief high" and "Port relief low". I assume high and low are relative to pressure. From there it gets confusing as hell. There are 3 different relevant diagrams...

My fear would be that whoever swapped things originally didn't know about the role of port reliefs and just swapped the hoses. (PS: when I tried to follow your link access was blocked by cloudflare for some reason. )

I don't think you can post a video here, or even a self-hosted video. I couldn't figure out how anyway. I think the only way is to host it on YouTube or similar and then post a link to that. EDIT: I opened a free account with vimeo. Let's try this: Ah, got it. Third time's the charm.

For those interested in playing at home, I sent AndyH a 3D printed pulley in carbon-fiber reinforced nylon: He installed it: and reports the initial brief test was successful. Longer duration testing to follow, but it's promising...

The trailer's a Chevy. Is that combo even allowed? :D

Ok, I think we may have hit upon the underlying problem here. You know that's not a riding mower right? <lol>

I printed one off in cheap PLA as a proof of concept. The overhang of the upper half of the sheave is proving a bit challenging, so I've tweaked the supports a bit and am currently printing off a second prototype. But after a bit of post-print processing with a file, it actually seems like a...

Thicker wall version for 3D printing:

I should add that my concern over the hub thickness is related to where the pulley centerline ends up. The width of the pulley doesn't really matter, it's where the belt rides. It needs to be aligned with the drive pulley to avoid problems.

Not sure when you need this by, but given it's for a lawn mower, I assume you want it before the winter. ;-) I've been giving the 3D printing concept more thought. The problem with printing a V-belt is it would need to be printed horizontally, so the belt would be wedging the layer adhesion --...

Nice. He might need a spacer to ensure it is correctly aligned with the drive pulley, but that could work. The pulley does say it is compatible with 3L belts as well as 4L and A series, so while the OD is 3-3/4", the pitch circle of a 3/8" belt is probably pretty similar to the OEM since the...

Ok, so I think I have all the numbers now. If I was to machine a new pulley from billet, it would probably look like this (although I'd 3D print a sample first to verify it on the machine): I'm not sure what you have for local machine shops around there, but one could take that drawing and...

Not a problem actually -- the 1/8" broach is an A width as is the 3mm broach. I tried it and the 1/8" fit perfectly in the 10mm bushing. The only trick was the shimming for the second pass, but I found a shim combination that will only be a few hundredths (of a mm) deeper than standard. That...

Glleneben, Dan is HIGHLY knowledgeable in hydraulic systems and well worth listening to. The first rule of troubleshooting is to check the simplest and easiest things first, 'cause it doesn't cost much in time or money and that's usually where the problem is anyway. The second rule is to...

Sorry, I meant the other way around, to account for the off-set. I estimated it at 26.8mm here:

Of course, it's not much more to go from just a hub to the entire thing. I bet this would be especially nice in 6061-T6 aluminium: