Results 1 to 9 of 9
  1. #1
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default '39 H engine problems

    I need to identify and repair the engine on the '39 H my grandfather purchased new. One of the cylinders has no compression and thought this would be a good project with my 2 boys. The engine was rebuild in the early 70s and very little time was put on it. When I took it out in the early-mid 80's for a few tractor pulls (running on the good cylinder) the cylinder had no compression and I didn't have enough engine experience to address at the time. In retrospect, I should have checked the simple stuff.
    I do plan on doing a leak down test prior to opening it up.
    I stopped running when I found 2 1/8" to 1/4" ball bearings (so long ago, I can't remember the size) in the oil the last time it was drained. As this was before the internet, I had no easy way of identifying where these could have come from.
    Any ideas where these balls could have come from? Obviously, I can't run it until this is fixed.....

  2. #2
    Elite Member
    Join Date
    Sep 2010
    Posts
    4,088
    Location
    Canada
    Tractor
    MF

    Default Re: '39 H engine problems

    I am thinking the bearing is from the crank shaft. Most likely the rear bearing. Have you checked your clutch to see if there is oil in its housing. When the bearings go they almost always take the seals with them.

  3. #3
    Elite Member Mace Canute's Avatar
    Join Date
    Nov 2006
    Posts
    4,617
    Location
    Saskatoon, Saskatchewan

    Default Re: '39 H engine problems

    Do you see the tube that houses the fan driveshaft? The back end of it terminates in an angle drive and I believe your ball bearings came from one of the bearings in that angle drive. It's possible that the balls were from a bearing that was replaced in the 70's rebuild, and the two loose ones just didn't get cleaned out. You'll find out when you pull it all apart.

    Here's a little manual that is about how to start, operate and adjust the John Deere Model H.

    http://digitalcommons.unl.edu/cgi/vi...ype=additional

  4. #4
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default Re: '39 H engine problems

    Thanks for replies.
    Mike: It has been so long since it has run, I don't know about a rear bearing-seal leak.
    Mace: Do I have to remove the angle drive to inspect? Thanks for the manual link; there is lots of info I didn't know about in it.

    We will start taking things apart until I find the origin.

    Ed

  5. #5
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default Re: '39 H engine problems

    I noticed the manual from the link above was dated '38. There has been a long standing debate related to this tractor.
    The story involved my grandfather, this tractor, and the flood in CT Sept 1938. We all assumed this was incorrect due to the first tractor made in '39. Anyone know when production actually started?

  6. #6
    Elite Member Mace Canute's Avatar
    Join Date
    Nov 2006
    Posts
    4,617
    Location
    Saskatoon, Saskatchewan

    Default Re: '39 H engine problems

    Quote Originally Posted by 69911e View Post
    Thanks for replies.
    Mike: It has been so long since it has run, I don't know about a rear bearing-seal leak.
    Mace: Do I have to remove the angle drive to inspect? Thanks for the manual link; there is lots of info I didn't know about in it.

    We will start taking things apart until I find the origin.

    Ed
    Yes, I don't think there is any way to inspect it without disassemble.

  7. #7
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default Re: '39 H engine problems

    I looked further and found oil in the clutch housing. Will I be able to see the bearing by removing the top cover of the crankcase or do I need to remove the clutch and bearing from the clutch side?
    I found the serial #; 3616
    Thanks
    Ed

  8. #8
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default Re: '39 H engine problems

    Found a problem: the cam gear is very loose. About 1/4" play sliding on the camshaft and it can twist about 3-5 degrees on the shaft. I can't believe this is as designed as all the engine power is transmitted through this cam gear. It appears this is unrelated to the bearing issue as the flywheel; side cam bearing seems fine and the nut is tight.
    Anyone know if this should be like this? Is there a definitive rebuild manual for this? I have seen general manuals, but not ones which carry this level of detail.
    Thanks
    Ed

  9. #9
    New Member
    Join Date
    Feb 2013
    Posts
    6
    Location
    Hebron CT
    Tractor
    JD '39 H,MF TO-35 '55, Case580B

    Default Re: '39 H engine problems

    Quote Originally Posted by Mace Canute View Post
    Yes, I don't think there is any way to inspect it without disassemble.
    How do I disassemble the fan driveshaft to inspect the bearings? I removed the clip at the end of the gear, but it does not seem to come off. Should it simply slide off? Should I use some heat?

    How much clearance should the rod bearings have? They currently have enough to visibly see movement relative to the crank; I would guess .010" to .020". On any engines I have worked on this would be way to much. Is this acceptable or do I need to change the rod bearings also?

Similar Threads

  1. L120 Engine problems
    By Grand_Pooba in forum John Deere Lawn & Garden
    Replies: 4
    Last Post: 08-04-2011, 09:34 AM
  2. Engine problems
    By tazewell in forum New Holland Owning/Operating
    Replies: 6
    Last Post: 06-12-2011, 11:43 PM
  3. JD 325 engine problems
    By jdjdad in forum John Deere Lawn & Garden
    Replies: 0
    Last Post: 05-28-2009, 07:53 PM
  4. BX-2350 engine problems
    By Ozzphest in forum Kubota Owning/Operating
    Replies: 30
    Last Post: 12-24-2006, 10:12 PM
  5. Engine problems.
    By winton in forum Parts/Repairs
    Replies: 15
    Last Post: 06-01-2004, 02:36 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.