| Author | Message | ||
     M_lappin |
Was wondering if any tranny parts out of our parts 1855 would work in the 2255? Haven't took the cover off of the 1855 yet, but got into the 2255 somemore and looks like we are going to need a lot more than we thought when we started. Didn't really budget enough this year to replace the entire transmission, would like to get it fixed and out of the shop ASAP, as it is already getting to be a pain to walk around. | ||
| John Schwiebert |
Just an FYI for you. Durring the production of the 2225 tractors there was a problem obtaining some of the items from vendors, bearings being one item. To get these tractors out of the door so to speak at Charles City they were assembled using different bearings, and some spacers,etc were used. Oliver then sent out a parts bulletin informing the field service people if you ever needed to work on one to replace these parts with the ones called for in the parts book. The smart thing might be to order a parts book for the 2255 and the 1855 and then you can compare the parts in each one. Send me a U. S. Mail address and if it ever rains for a couple of days I will send you some of the pages out of the 1600 shop manual. | ||
| M_lappin |
So I take it most parts are interchageable between the two, bearings and spacers maybe. Heres my address: Marty Lappin 26200 State Road 4 North Liberty, IN. 46554 Thanks again for all the help. | ||
| Chris Losey (Admin) |
From what I can see in my parts books, the complete tranny parts will interchange, as most bearings are indentical between the two. But there is one catch. The 2255 transmission spun faster since there was gear reduction at the planetary final drives. The input shaft speed doesn't change, but the gears on it in a 2255 have more teeth than the same gears in an 1855. So the counter shaft and pinion shaft are going to be turning faster in a 2255 than an 1855 because of this. With the extra gear reduction in the final drives, the 2255 would go the proper speed. The practical upshot of this is, if you put the tranny parts of an 1855 in a 2255, she's going to go slower. How much would require more math than I'm willing to do right now. | ||
| John Schwiebert |
Marty: What I meant was if you looked at your parts, looked in the shop and parts books and found differences you would know why. Chris answered the questions on the gears. I don't have a 2255 parts book so I could not check that. | ||
| M_lappin |
Are the gears on the countershaft and the pinion shaft the same? If so then all I would have to come up with is the proper gears for the low/high range. | ||
| M_lappin |
okay guys, was at the dealer today and had them run off copys of the parts breakdown for the transmissions and so far there is one tooth difference between all the gears. I seem to remember that when we had it apart to change the lube pump chain that the bull gears are smaller and the drive gears on the differential were larger than the 1855's. This is where the difference is made up for the planetarys. There is some in the transmission of course, but one tooth is not a lot, will do the math when am bright eyed and bushy tailed. I very well could be wrong as it was about ten years ago when last had the cover off. | ||
| M_lappin |
Wait a minute guys, got looking at the tooth counts on the parts list and for example 6th gear on the pinion shaft for the 1855 actuall has one tooth less than the 2255. Unless I'm more worn out than I feel, that would actually be faster than the original in the 2255, however the pinion shaft has 3 more teeth than the 1855's. The sleeves are actually the same part numbers, need to get a good nights sleep and do this when I can see straight, will compare bull gears between the two and see if there IS a difference there also. If I lost 5% or less in speed, it would be livable, mainly this tractor is used for spraying, a backup for planting or sidedressing. Not like making hay when it might have to go back to the same field 3 or 4 times a cutting. | ||
| M_lappin |
One other thing I just thought of is that the CAT runs 500 to 600 RPM faster than the Waukesha, this is the difference in the tooth counts more than likely. The input would spin faster in the 2255, however on the counter shaft and pinion the 1855 has one tooth more on the drive and one less on the driven. Seems like the differences would cancel one another out. |
