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Tip: Put a furnace filter (or bulk filter media cut to fit) in front of your radiator. This will help a lot when it comes to cleaning the radiator.
100 degrees C = 212 degrees F. Pretty warm.
Do you have a coolant recovery system? Are you using a 50/50 coolant mix?
Is your battery mounted in front of the radiator? This has been a problem with some tractors cutting off the air supply to the radiator.
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Take pictures and document the disassembly. Assemble in reverse order. No problem.
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jinma 254/25hp, shaft is 24.75mm/.970 in .70 in from groove to groove
So, shaft itself is slightly less than 1″ diameter, and slightly less than 3/4″ diameter for the ball slots, and then subtract for a 5/16″ keyway. That doesn’t leave much meat. According to my calculations, a shaft size of 1-3/8″ (34.9 mm) is required to transmit 20-30HP @ 1,800 r/m. I think you made the right call.
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That might work ok too, but I don’t know the size of the #24 shaft or the HP of the tractor. A single keyway doesn’t have the efficiency of a spline.
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This shows how the timing marks line up. Your hydraulic pump drive gear is on the lower left.
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The only way I see that working is to replace a section of the #24 shaft with a splined shaft, and then use a clamped universal joint yoke like those used on PTO shafts. Which brings up a question; Why can’t you just adapt a category lll PTO drive line as a replacement?
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It looks like you will have to push the shaft through the rear far enough to remove the rear bearing, allowing the shaft to drop, and then remove the shaft through the front. The driver gear appears to be an interference. Do you know if both of those bearings are the same size?
Is your shop going to weld on a sliding spline with a yoke and cross? That would be cool.
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This is where a parts manual would really come in handy, and so would a picture. What make/model tractor are we talking about?
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Looking for cross reference on the seals in my LW7 backhoe.
Sorry, but there is no printed cross reference available specifically for Chinese backhoes. Your best bet is to find a local hydraulic shop that stocks, or can acquire, metric sized components. Do you have the manual for your hoe? It will list the part number and dimensions of seals and O-rings. All cross referencing will be done by dimensions, not part numbers.
You can try this:
https://grizzlyseals.com/wp-content/uploads/2016/10/single-parts-catalogue.pdf
or go here:
Good luck.
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After chasing seal sizes and calling around I sent it to a local hyd shop. $150 and a weeks time frame.to rebuild. Got too many other things going on to screw around with it. Thanks for the help
Dave
Good news, glad you got it rebuilt, but we had the understanding that you had already tried that, or that option was not available to you.
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