Bad Bearing in Transmission of 304 update

   / Bad Bearing in Transmission of 304 update #1  

jinmajim

New member
Joined
Jan 31, 2005
Messages
20
Location
Alaska
Tractor
Jinma 304
Sorry, the bearing is #19 in the parts list on page 62 of the parts manual. It blued the shaft it rides on as well. My importer is trying to get the parts, now.
I can post a picture as well if anyone is interested.

Jim
 
   / Bad Bearing in Transmission of 304 update #2  
<font color="blue"> I can post a picture as well if anyone is interested. </font>

Hey Jim,

Sorry for the misfortune. By all means post a picture if you can.

How many hours, and did you flush the transmission with diesel fuel or kerosene. Also, what grade/viscosity oil, were you using in the transmission?

Again, sorry for your misfortune,

Joe
 
   / Bad Bearing in Transmission of 304 update
  • Thread Starter
#3  
It has about 20 hours on it. Most of that time was idling trying to get the backhoe to work. I did not flush it out. Used Delo 80W/90 ESI. All the other bearings seemed in very good shape. This on the top shaft, and the oil level as specified by the dipstick does not cover it. This happened right before I left on vacation in June, and I wasn't able to check it until I got back. I am including a picture. You can see the heat damage to the shaft the bearing rides on.

Jim
 

Attachments

  • 694382-badbearingcusml.jpg
    694382-badbearingcusml.jpg
    56.2 KB · Views: 335
   / Bad Bearing in Transmission of 304 update #4  
<font color="blue">It has about 20 hours on it. Most of that time was idling trying to get the backhoe to work. I did not flush it out. Used Delo 80W/90 ESI. </font>

Hey Jim,

I am so sorry that this has happened to you.

I went about 80 hours, of hard work with my 224, with extremely low or no oil in my creeper gear box. But I had to remove the creeper cover to discover this. I examined my gears visually the best that I could. They seemed to me to be ok, but I'm not a professional mechanic. Then I followed the manuals directions and flushed the tranmission out through the creeper drain plug. It took about 6 gallons, before diesel starting coming out the creeper gear box drain, but when it did, it really came out. Then I drained all of that out through all of the drain plugs. Then I refilled with oil, but left the drain plug out on the creeper gear box, until I saw oil coming out. I now check the oil level with the dip stick resting on top of the tranmission cover, instead of screwing the dipstick in. So far, on mine, it is still working ok with 130 hours, but I still worry about the bearings in the creeper gear box. I wish that I had flushed mine out, as soon as I got mine to the house, and never dreamed that the oil passages might be stopped up.

This is just a guess, but I am thinking that some of the machined metal particles got into the bearings and caused the siezure, but that is just a guess. The oil passages, may have been totally stopped up as well, not letting the bearing get lubrication.

I am also wondering if the 80w90 might just be too heavy for the Alaska cold weather. I looked at my gear oil chart and it stopped at -20 degrees F, for 80w90. It may be fine though up there. Just a thought. I don't know how cold that it gets in Alaska, but I am thinking that it is on the Cool Side sometimes.

Again, I am so sorry that this has happened to you.

Please read Greg's posts on flushing, I think that he knows, what he is talking about.

Joe
 
   / Bad Bearing in Transmission of 304 update #5  
Hey Jim,

Just wondering how you are coming along with the Bearing Repair.

Let us know how it is coming along, if possible.

Get your tractors running &
Have a nice day,
Joe /forums/images/graemlins/cool.gif
 
   / Bad Bearing in Transmission of 304 update
  • Thread Starter
#6  
I am currently awaiting a dealer response. I have sent him scans of the relevant parts pages and a picture of the part in the tractor. I assume he is in contact with his counterpart in China. He doesn't like to email unless he has definite news.
I had the slight hope that he might find a matching part in the states, but I don't think that will happen. Meantime, I am having serious tractor withdrawal. If I could hide it away somewhere it would be better, but it is sitting in my driveway reminding me constantly. I am trying to find a place to rent to do the actual tear down work, as my mechanic frowned really hard when I talked about doing it in the gravel driveway. Problem is I don't know when the parts may show up. I am guessing October. I will probably have to rent a piece of equipment pretty soon to get my fix and also to complete the projects that I was working on when the Jinma hiccuped. I have been moving the 7 tons of gravel that I had delivered the day it quit with a wheelbarrow. Did I say I miss my tractor??

Jim

PS: I am attaching a picture of a bear that came to check out the tractor this spring.
 

Attachments

  • 705473-tractorbearsmall.jpg
    705473-tractorbearsmall.jpg
    80 KB · Views: 224
   / Bad Bearing in Transmission of 304 update #7  
No way to have that bearing crossed locally? I commonly pull bearings out of 50-60 year old equipment .. no markings.. the local bearing supplier only needs ID, OD, depth.. style.. etc.

Soundguy
 
   / Bad Bearing in Transmission of 304 update #8  
<font color="blue"> I am currently awaiting a dealer response. I have sent him scans of the relevant parts pages and a picture of the part in the tractor. I assume he is in contact with his counterpart in China. He doesn't like to email unless he has definite news.
I had the slight hope that he might find a matching part in the states, but I don't think that will happen. Meantime, I am having serious tractor withdrawal. If I could hide it away somewhere it would be better, but it is sitting in my driveway reminding me constantly. I am trying to find a place to rent to do the actual tear down work, as my mechanic frowned really hard when I talked about doing it in the gravel driveway. Problem is I don't know when the parts may show up. I am guessing October. I will probably have to rent a piece of equipment pretty soon to get my fix and also to complete the projects that I was working on when the Jinma hiccuped. I have been moving the 7 tons of gravel that I had delivered the day it quit with a wheelbarrow. Did I say I miss my tractor??

Jim
</font>

Hey Jim,

Don't let it get you down, Jim. These things happen for a reason. But I would seriously consider, following Greg's posts on Flushing and I would also double check, to see if the 80w90 is too thick for the Alaskan Temperatures.

If someone has a Mini Wearhouse type of business nearby, then that should do for the repair work. You may have to purchase or rent a generator for lights and stuff, but I think that it is a doable project. Also, if one of your neighbors has a barn, that they are not using, they may just let you use it for shelter to get your tractor repaired.

Or you may be able to get yourself a used Army Tent for a good deal somewhere. Like they use at parking lots, to sell furniture out of a truck, etc. As long as you can keep your tractor dry and not have dirt around, that is a big concern.

Try giving JinmaParts.com a call. They have a good parts supply for Jinma's and it might be that they could give you some pointers as well, for doing this repair work.

I know all too well, the work with the wheelbarrow, and it is back breaking work. But I have done my fair share of it and having my little 224, helps me a lot, in not haveing to use the wheelbarrow nearly as much. But still on quick jobs, I still use the wheelbarrow sometimes.

I know that it is a big big letdown, about your tractor, but I really do think that things happen for a reason, and sometimes we never ever find out what the reason is.

You know Jim, there is a law about buying a big purchase item. For a time, the purchaser is protected by a Law, that says," The money being exchanged is for a product that has an intended purpose". And if the product fails quickly, then the product does not meet "The Intended Use" requirement. If your dealer, doesn't get this done expediatly, then you may have a Legal Recourse. In reality, what I am saying is that you may not have to get the tractor repaired, but that your dealer may be required by Law to get yours repaired or give you another tractor. A Lawyers advice might be prudent in this case. I mean, since you did not even, get to put your tractor to work at all.

Keep us posted Please, if you can on your progress. I just hate that this happened to you.

Joe
 
   / Bad Bearing in Transmission of 304 update #9  
We are a large supplier for Jinma parts and we cross over these bearings all the time,most of the time the last 3-digits on the bearing gives the size for cross over,waiting until October for parts ???? We can have the parts air freighted in a week or less if we don't have them in stock

Tommy
Affordable Tractor
 
   / Bad Bearing in Transmission of 304 update
  • Thread Starter
#10  
</font><font color="blue" class="small">( Please read Greg's posts on flushing, I think that he knows, what he is talking about. )</font>
When I was reading Greg's posts on the subject I got the distinct impression that his unit had thick gunk in it. When I emptied mine it was about the consistency of 20W oil. Too thin, so I thought, to plug anything up. Probably never know what exactly happened with this bearing, but you can bet that I will be going back through all the relevant setup posts and following everything I can whether I think it needs it or not.
</font><font color="blue" class="small">( I am also wondering if the 80w90 might just be too heavy for the Alaska cold weather. )</font>
I live in coastal Alaska. Different than the interior. Temperate rain forest. I grew up in Iowa and this is a Much better climate. In Iowa we had brutal cold and wind in the winter, and brutal heat and humidity in the summer. Here it gets into the teens and twenties in the winter, sometimes colder, and fifties and sixties in the summer, although the temps are in the eighties right now.
Thank you for all your good advise, and be assured I will be flushing the tranny. Do you think I should do it before tear-down or after, or both?

Jim
 

Tractor & Equipment Auctions

2002 Scag STT61A-27KA Turf Tiger 61in Zero Turn Mower (A50322)
2002 Scag...
Hydraulic Power Unit S/A Towable Pump (A50322)
Hydraulic Power...
Club Car Carryall 500 Electric Utility Cart (A51691)
Club Car Carryall...
2019 Dodge Journey Crossroad SUV (A50324)
2019 Dodge Journey...
New Kivel 4200 lb. Skidloader Forks (A50774)
New Kivel 4200 lb...
2010 Chevrolet Malibu Passenger Car (A51694)
2010 Chevrolet...
 
Top