Lombardini small 4wd tractor spinning wheel

[alaaahmad]

English and USA need to be posted in upper case btw. I realize the OP isn't. Just poking fun and nothing more. I looked at his 'bio' and it don't list his native country...

I will say his pictures reveal a rusted mess with no lubricant present.

Iam from jordan and we found no oil at all as i mentiond ,it filled with grease insted of oil and we romoved about 3 kilo grease to see the parts inside
The miss in my words it becuse iam writing fast and reply without correct the words so sorry for that

 

[alaaahmad]

Hello alaaahmad,

Thank you for the pictures. As far as those springs, don't worry, the top cover is what holds them in place.

The pinion shaft is completely stripped as TGMT pointed out. Not teeth left. Most likely due to lack of the proper oil. Should have 80W90 oil.

I suggest that you find a mechanic because right now, everything inside that gearbox needs to come out as the pinion shaft is the last one to be removed.

This is a picture from the gears from the front gearbox but it has the same ring and pinion setup. Inside the blue circle is the pinion gear and how it should look with the teeth in good condition.

View attachment 3210334

Really your assist is appreciated and to be kind also .

 

[ptsg]

Really your assist is appreciated and to be kind also .

I restored an Agria 8900 a year or so ago. It's pretty much the same as yours but mine has a Lombardini 1 cylinder engine and yours has 3 cylinder. I have a thread with lots of pictures here: So I did a thing... Agria 8900D

Maybe this will help you in any way possible. At least knowing what to look for.

I don't know where you can find the parts needed other than maybe some Spanish websites that may be able to ship the parts to you.

 

[alaaahmad]

It is hard to tell from the picture, but is the pinion gear completely worn out? See circled gear.View attachment 3210332

I dont think so it worn out maybe becuse the grease it look like that

 

[part-time-Farmer-NC]

I restored an Agria 8900 a year or so ago. It's pretty much the same as yours but mine has a Lombardini 1 cylinder engine and yours has 3 cylinder. I have a thread with lots of pictures here: So I did a thing... Agria 8900D

Maybe this will help you in any way possible. At least knowing what to look for.

I don't know where you can find the parts needed other than maybe some Spanish websites that may be able to ship the parts to you.

Thanks for posting that link. I just have to say WOW, WOW, WOW... What work you were able to accomplish!

It's a good thing you enjoyed the challenge.

 

[ptsg]

Thanks for posting that link. I just have to say WOW, WOW, WOW... What work you were able to accomplish!

It's a good thing you enjoyed the challenge.

It did want to put a fight but I was here for it in every possible way. Just about everything on it had one issue or another. The only part I didn't dig too much into it was the starter. Conveniently, it has been giving me some issues with the sprag clutch slipping.

 

[etpm]

Iam from jordan and we found no oil at all as i mentiond ,it filled with grease insted of oil and we romoved about 3 kilo grease to see the parts inside
The miss in my words it becuse iam writing fast and reply without correct the words so sorry for that

You don't need to apologize for your english language skills, at least you are trying. If you just ignore 5030 your life will be easier.
Eric

 

[part-time-Farmer-NC]

As for the beveled pinion gear, could he just remove it, weld each tooth, regrind to fit existing/mating gear and reassemble?

Based on the magic you did with yours that part looks like it would be easier than the piston/head issues you saw and made it look like new.

 

[etpm]

As for the beveled pinion gear, could he just remove it, weld each tooth, regrind to fit existing/mating gear and reassemble?

Based on the magic you did with yours that part looks like it would be easier than the piston/head issues you saw and made it look like new.

You could do as you suggest but the repair would not last long and would probably ruin the ring gear. Gears of the type in question are not only hardened but have a very specific shape. This shape allows the gears to roll together while maintaining the proper contact required to transmit the necessary torque. Improper shape will cause very high point loads which will break gear teeth. Also, improper shape will make the teeth slide past each other instead of rolling together. Even properly shaped gear sets, as when installing new gears, will be ruined if they are not properly set up. This is why when putting new gears in a rear end blueing or similar must be used to make sure the new gears are contacting each other correctly. Badly set up gears will whine until they are ruined and break. So really, unless there is really no other option, welding the pinion gear and grinding by hand to fit the ring gear is a bad idea.
Eric

 

[ptsg]

You could do as you suggest but the repair would not last long and would probably ruin the ring gear. Gears of the type in question are not only hardened but have a very specific shape. This shape allows the gears to roll together while maintaining the proper contact required to transmit the necessary torque. Improper shape will cause very high point loads which will break gear teeth. Also, improper shape will make the teeth slide past each other instead of rolling together. Even properly shaped gear sets, as when installing new gears, will be ruined if they are not properly set up. This is why when putting new gears in a rear end blueing or similar must be used to make sure the new gears are contacting each other correctly. Badly set up gears will whine until they are ruined and break. So really, unless there is really no other option, welding the pinion gear and grinding by hand to fit the ring gear is a bad idea.
Eric

Agreed on everything.

While I've done it in the past, it was only on things that didn't really matter or seen huge loads. One of them, was just a cheap small reciprocating saw.

I wouldn't do it in this case. And if that was my tractor, I would just take the ring and pinion to the local machine shop that is specialized in gears. One of the best in country. Being straight tooth gears, it shouldn't be too terribly expensive either.

They've done 3 ring and pinion gear setups for my 70's electric forklift. It was rented at one point and we all know how rental equipment gets treated.