Advice for replacing chain with belts

[nvfw39n]

Hello.
I have a two wheel japanese tractor 8HP. There is a chain 10B between the gearbox and the tiller. I cannot find the oil seals for the chain box and I also want to attach different things, not just the tiller. So I decided that I should replace the chain with belts. But I do not know what kind of belts. Can someone help me?
So far someone told me that it should be toothed belt, so that it would not slip. Another person told me that two normal belts might work, I think you call them V belts. The same V belts are used for the connection between the engine and the gearbox. I have no idea what kind of toothed belt would be sufficient. I saw T type belts online, maybe T10 25mm? Or two V belts would be enough? I am attaching some photos of the machine.
I also saw that there is attachment in Japan for digging potatoes. It is connected with single V belt. But of course the load would be less than the tiller.

 

[Smokeydog]

Nobody makes their own seals or bearings. If you can take them out to bearing shop or measure to get replacements. Worn bearings can make seals leak. Corn head 00 grease slows gearbox seal leakage.

Changing drive from chain to belt an expensive option. How to tension? Too many variables not described like size and interference to offer any solutions.

Keep it simple usually works best.

 

[nvfw39n]

Sorry, but I did not mention any bearings? There aren't any bearings in any of this anywhere. Maybe I did not explain well. I will attach more photos.

The case that contains the chain has two seals. They leak. I cannot find them anywhere and no one can make them locally. Additionally, the case inside is worn from the chain, and I have replaced the chain, but it was not the problem. So all of this is reason 1 for wanting to replace the chain with belt.
Reason 2 is that I want to remove the tiller and attach other things like mower. Adapting other attachments to belts would be much easier than to the chain.

I am attaching photos of the disassembled case of the chain, also of the japanese potato digger I saw that is connected with single belt. I want to do something like that, but was thinking of 2 belts or 1 toothed belt. Tensioning is the simple part. The complicated part is what kind of belt would be sufficient.

 

[bmaverick]

Hello.
I have a two wheel japanese tractor 8HP. There is a chain 10B between the gearbox and the tiller. I cannot find the oil seals for the chain box and I also want to attach different things, not just the tiller. So I decided that I should replace the chain with belts. But I do not know what kind of belts. Can someone help me?
So far someone told me that it should be toothed belt, so that it would not slip. Another person told me that two normal belts might work, I think you call them V belts. The same V belts are used for the connection between the engine and the gearbox. I have no idea what kind of toothed belt would be sufficient. I saw T type belts online, maybe T10 25mm? Or two V belts would be enough? I am attaching some photos of the machine.
I also saw that there is attachment in Japan for digging potatoes. It is connected with single V belt. But of course the load would be less than the tiller.

You need to post in the YANMAR section.
Yanmar

Or in the 2-Wheel tractor section.

2-Wheel Tractors

Discussion for all 2-wheel tractors, such as BCS, Gravely and other brands.

www.tractorbynet.com

We have a good group of people knowing these machines.
And more support on the YTOG.

 

[bmaverick]

Sorry, but I did not mention any bearings? There aren't any bearings in any of this anywhere. Maybe I did not explain well. I will attach more photos.

The case that contains the chain has two seals. They leak. I cannot find them anywhere and no one can make them locally. Additionally, the case inside is worn from the chain, and I have replaced the chain, but it was not the problem. So all of this is reason 1 for wanting to replace the chain with belt.
Reason 2 is that I want to remove the tiller and attach other things like mower. Adapting other attachments to belts would be much easier than to the chain.

I am attaching photos of the disassembled case of the chain, also of the japanese potato digger I saw that is connected with single belt. I want to do something like that, but was thinking of 2 belts or 1 toothed belt. Tensioning is the simple part. The complicated part is what kind of belt would be sufficient.

Yes, the chain system on the two wheel tractor is much like the Yanmar rotary tillers mounted to the back of tractors.

On the YTOG we have the manual for the YS80 for free.
YANMAR WALK-BEHIND YC YS YA SERIES NPC-9072.pdf

 

[bmaverick]

Reason 2 is that I want to remove the tiller and attach other things like mower. Adapting other attachments to belts would be much easier than to the chain.

Your Yanmar YS80 has a slew of Ag attachments.

 

[bmaverick]

The mower is a front attachment.
And if you get the seat option with the wheeled axle on the back, it would work like a riding mower too.

 

[bmaverick]

In Canada, there is a company who makes log splitters for these 2-wheel Japan made tractors.
The engine is omitted and the belt from the tractor mounts to it.

I think the company is Jansen and this is the 20-tonne unit.

 

[bmaverick]

I am attaching photos of the disassembled case of the chain, also of the japanese potato digger I saw that is connected with single belt. I want to do something like that, but was thinking of 2 belts or 1 toothed belt. Tensioning is the simple part. The complicated part is what kind of belt would be sufficient.

Yes, this works really well for potatoes.

Even though I have a Yanmar compact tractor, I would replace my Poluan Pro walk-behind tiller in a heart beat if I could get a Yanmar 2-wheel tractor. You have one of the better models too.

The YS860 and YS950 are the improved models over your model.

 

[bmaverick]

Sorry, but I did not mention any bearings? There aren't any bearings in any of this anywhere. Maybe I did not explain well. I will attach more photos.

The case that contains the chain has two seals. They leak. I cannot find them anywhere and no one can make them locally. Additionally, the case inside is worn from the chain, and I have replaced the chain, but it was not the problem. So all of this is reason 1 for wanting to replace the chain with belt.
Reason 2 is that I want to remove the tiller and attach other things like mower. Adapting other attachments to belts would be much easier than to the chain.

I am attaching photos of the disassembled case of the chain, also of the japanese potato digger I saw that is connected with single belt. I want to do something like that, but was thinking of 2 belts or 1 toothed belt. Tensioning is the simple part. The complicated part is what kind of belt would be sufficient.

Here is the chain drive system for your model,

Oh, let's convert that in 2 seconds to English . . .

In Japan, their language relates to things in nature. So seeing some of the translated words being odd, think like they would see an image or behavior in their head and that is the function of the part. Also they rely on phonics. So sound out the odd word slowly and then faster and faster until it clicks in your head what they might mean.

 

[bmaverick]

Hello.
I have a two wheel japanese tractor 8HP. There is a chain 10B between the gearbox and the tiller. I cannot find the oil seals for the chain box and I also want to attach different things, not just the tiller. So I decided that I should replace the chain with belts. But I do not know what kind of belts. Can someone help me?
So far someone told me that it should be toothed belt, so that it would not slip. Another person told me that two normal belts might work, I think you call them V belts. The same V belts are used for the connection between the engine and the gearbox. I have no idea what kind of toothed belt would be sufficient. I saw T type belts online, maybe T10 25mm? Or two V belts would be enough? I am attaching some photos of the machine.
I also saw that there is attachment in Japan for digging potatoes. It is connected with single V belt. But of course the load would be less than the tiller.

Did your YS80 come with the tool pack? This should be all the tools needed to work on the machine and to disconnect the rear tiller.

 

[dkmc]

Looks like a good ap for a Poly-Vee belt. Like the kind on a modern car that runs the engine accessories. Much higher power transmission capability, less slipping, cooler running. Leave it a bit more loose in case of a big jamb up, and it'll slip a bit instead of do damage. A timimg belt with teeth is another option but more complicated and will NOT slip which could cause damage, but the chain never slips either. Most of the challenge is getting the pulley bore's spline'd to fit the shafts. A tentioner needs to be fitted as well. A machine shop could get it done. It similar to the type of jobs I've done for myself and others.

 

[nvfw39n]

Thank you for the files and advice. I actually bought one of those chinese flail mowers? and it is the main thing I want to attach in place of the tiller. But the chinese tractors have gears at the back of the gearbox, not like the japanese shaft at the side. So I need belts for it too, preferably the same type.

Someone said I should look at car timing belt, specifically 1.9 tdi. It has 30mm HTD belt. Quite expensive compared to V belts, but maybe it will work?
I did not consider poly V belt. I will now. Thanks.

There is a place here that will make the inner splines. A person there said toothed belt, so it would not slip. I think probably because the tiller is quite high load?? I have seen flail mowers with belt connection, but never tillers. So I guess I am doing something stupid, but I think I do not have a choice.

 

[bmaverick]

Thank you for the files and advice. I actually bought one of those chinese flail mowers? and it is the main thing I want to attach in place of the tiller. But the chinese tractors have gears at the back of the gearbox, not like the japanese shaft at the side. So I need belts for it too, preferably the same type.

Someone said I should look at car timing belt, specifically 1.9 tdi. It has 30mm HTD belt. Quite expensive compared to V belts, but maybe it will work?
I did not consider poly V belt. I will now. Thanks.

There is a place here that will make the inner splines. A person there said toothed belt, so it would not slip. I think probably because the tiller is quite high load?? I have seen flail mowers with belt connection, but never tillers. So I guess I am doing something stupid, but I think I do not have a choice.

BEFORE buying any belts, the best price and good delivery is,

https://www.vbeltsupply.com

They sell more belts in North America than anyone else. Many of us members use this company.

Don't get lost on their site, it's massive. They have nearly every belt imaginable!

Top Categories

• Classic V-Belts
• Classic Banded V-Belts
• Kevlar V-Belts
• Metric V-Belts
• Cogged Belts
• Wedge Belts

 

[nvfw39n]

Thanks but I am in Europe

 

[etpm]

Thanks but I am in Europe

You know, along with listing your tractor you can also list your location. Nobody is gonna hold it against you if you are in Europe or anywhere else.
Eric