Yesterday's Tractor Co. Restoration Quality Tractor Parts
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
Show Parts for Model:

over/under output shaft and direct drive clutch

Author  [Modern View]
Kell

11-17-2013 23:26:09
216.38.44.225



Report to Moderator

Disassembled an over/under tonight and noticed two things that concern me. First, the teeth on the direct drive clutch plates appear to have cut into the gear on the input drive shaft. More so on the inner plates, the innermost plate has cut almost halfway through the spline on the gear. I don"t think this is normal wear and suspect it is due to the direct clutch slipping, even though I never noticed any problems with the o/u before taking the tractor apart. Secondly, I took a look at the output shaft where the sprag clutch rides and found it to be dark in color but very smooth where the rollers ride. The edges seem to have slight wear on the shaft, from the spring clips on the sprag, I suspect. The sprag itself doesn"t look terrible, there is some wear on the inside where it rides the shaft, but the outside is clean and so is the inside of the sun gear shaft it tucks into. Probably going to replace the sprag regardless, but wonder about the output shaft. In this condition, should it be replaced? Took a photo, should be attached.

[Reply]   [No Email]
2-155owner

12-21-2013 05:27:24
75.247.141.35



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to Kell, 11-17-2013 23:26:09  
have seen many of these new and old, the wear is normal as far as the notches in the shaft,if i was to gaurantee the work i would put new shaft.if it was my own i'd probably reuse both shafts



[Reply]  [No Email]
2-stroke dd

11-18-2013 21:30:26
69.66.110.149



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to Kell, 11-17-2013 23:26:09  
that input shaft is out of an early o/u it has the square cut splines later o/u had rounded splines the later friction discs will not work on that shaft. if you are concerned about the disc hanging up on those splines a good machine shop can fill them in and recut them.As far as the output shaft I would clean it up and put in a new sprag.



[Reply]  [No Email]
Mitch Poindexter

11-19-2013 07:33:27
216.99.180.5



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to 2-stroke dd, 11-18-2013 21:30:26  
Good point, I was focused on the notches and didn't pay any attention to the fact that it was the old square splines, mea culpa.



[Reply]  [No Email]
Kell

11-18-2013 09:34:28
192.46.108.229



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to Kell, 11-17-2013 23:26:09  

Here's a photo of the gear affected by the direct drive clutch plates. Any advice is appreciated, this is my first time going through one of these units completely.



[Reply]  [No Email]
Mitch Poindexter

11-18-2013 11:35:38
216.99.180.5



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to Kell, 11-18-2013 09:34:28  
I've rebuilt 3 or 4 of these in the last couple of years for our tractors and have seen examples of both of your pictures, so I'll offer my 2 cents (mostly because my opinion is not worth much more than that). 1st, I doubt very much that the cuts on the direct drive splines are the result of the direct drive clutch slipping, rather I would suspect that someone somewhere along the way has had a tendancy to drop the clutch, or shift the O/U under very heavy pulling loads. In any event, there is a lot of useful life left in those splines , and as expensive as a new shaft will be, I would put it back together as is and not worry about it. Not sure what you pulled it out of, but counting the marks tells me it's not out of a 2-180 or 2-155 with the heavy duty O/U because you only had 6 friction plates in it. If you're still worried about it then consider replacing the direct drive clutch plates and frictions with those from a 2-180, the heavy duty O/U has 7 frictions and thinner steel separater plates. This adjustment will more than likely get the alignment of your teeth such that they won't be riding in the same worn grooves on the hub. This will also be expensive, and unless its a tractor that you're planning to run a bunch of HP out of, then I doubt it would be worth the expense.

2nd, on the shaft where the sprag rides, the one from our 2-180 had a large amount of material transfer from the sprag to the shaft itself, so I put the shaft in a lathe and used emery cloth on it until the shaft was polished smooth again. Measured the shaft and it was all within spec tolerances (shaft had not worn it is tough as all get out, just the sprag had started breaking down and transferred onto the shaft), so I put a new sprag in it and it works perfectly.

3rd, replace the sprag. Costly, but its just not worth taking a chance while you're there, IMO.

[Reply]  [No Email]
Kell

11-18-2013 19:18:42
216.38.44.225



Report to Moderator
 Re: over/under output shaft and direct drive clutch in reply to Mitch Poindexter, 11-18-2013 11:35:38  
Thanks very much Mitch. It came out of a 1750.

Yeah, after thinking on the input shaft issue, it must be wear that was caused by running a heavy load and shifting the o/u from under to direct. Picking up speed with 5 bottoms in the ground, maybe. I am worried the notches in the splines may cause slipping, not allowing the clutch to fully engage, but it didn't seem like direct was slipping at all before I pulled the unit from the tractor. I doubt that the damage was done over a short period of time, so maybe running it would be OK... for a while. Will probably replace most of the separator plates as a couple barely have any teeth left.

Definitely replacing the sprag and will look into cleaning up the output shaft as you suggested.

[Reply]  [No Email]
[Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply]

Hop to:
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters