1949 Cincinnati No.3 High Power 4J3P1V need help.
Close
Login to Your Account
Results 1 to 10 of 10
  1. #1
    Join Date
    Nov 2014
    Country
    MALAYSIA
    Posts
    20
    Post Thanks / Like
    Likes (Given)
    6
    Likes (Received)
    5

    Default 1949 Cincinnati No.3 High Power 4J3P1V need help.

    I recently came across a Cincinnati No.3 that needs some major repair. Machine is not feeding due to a jammed hydraulic drive shaft. I'm having trouble looking for the correct manual and so far all the manuals that I have found has a different overarm compared to mine (see attached pictures). If someone can point me to the correct manual I would be grateful. Also I found two disconnected pipe fittings on the underside of the knee in feedbox compartment, as shown in the attached pictures. Anyone has any idea what these are for?
    Attached Thumbnails Attached Thumbnails photo_2020-10-18_00-24-42.jpg   photo_2020-10-18_00-24-43.jpg   photo_2020-10-18_00-24-44.jpg   photo_2020-10-18_00-24-41.jpg   photo_2020-10-18_00-24-39.jpg  


  2. Likes texasgunsmith liked this post
  3. #2
    Join Date
    Nov 2014
    Country
    MALAYSIA
    Posts
    20
    Post Thanks / Like
    Likes (Given)
    6
    Likes (Received)
    5

    Default

    More pictures...
    photo_2020-10-18_00-24-45.jpg
    photo_2020-10-18_00-24-46.jpg
    photo_2020-10-18_00-24-47.jpg
    photo_2020-10-18_00-24-49.jpg

  4. #3
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    1,343
    Post Thanks / Like
    Likes (Given)
    849
    Likes (Received)
    460

    Default

    I think the powered overarm is something of an accessory. It would have its own manual. This one may help for overarm:

    http://vintagemachinery.org/pubs/2097/15295.pdf

    While the parts and service manual are combined here, for #2, #3, and #4 dial type:

    http://vintagemachinery.org/pubs/2097/22565.pdf

  5. #4
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    31,369
    Post Thanks / Like

    Default

    If you look on the first real page of the manual (the one after GS10) you will see it applies only to 2A and 4A serials

  6. Likes texasgunsmith liked this post
  7. #5
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    1,343
    Post Thanks / Like
    Likes (Given)
    849
    Likes (Received)
    460

    Default

    Quote Originally Posted by johnoder View Post
    If you look on the first real page of the manual (the one after GS10) you will see it applies only to 2A and 4A serials
    Good eye, good eye !

    Here's a service and parts manual for 3J and 4J on ebay, 191 pages:
    Cincinnati Milling Machine # 3, 4, 5, & 6 Mod OD Service and Parts List Manual | eBay

  8. #6
    Join Date
    Nov 2014
    Country
    MALAYSIA
    Posts
    20
    Post Thanks / Like
    Likes (Given)
    6
    Likes (Received)
    5

    Default

    Wow that's a good find on that over arm. Unfortunately the owner replaced the geartrain removed with an inverter.
    The 4J manual on Ebay is a hard hardcopy version though, is there a purchasable soft copy somewhere though?
    On another note, does anyone know what's the HP on the rear bottom motor that drives the main pulley? I've read on this forum it could be anywhere from 20-50HP. That's a monster of a machine if that's true. Also can anyone confirm if the main hydraulic shaft is supposed to turn on motor start up?

  9. #7
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    1,343
    Post Thanks / Like
    Likes (Given)
    849
    Likes (Received)
    460

    Default

    Quote Originally Posted by newcomer View Post
    I've read on this forum it could be anywhere from 20-50HP.
    A No 2 is like 7.5 to 10hp. I was thinking a No 3 would be 10 to 15hp.

    Looking at these 3 brochures, there are No 3's with 10, 15, and 20hp.

    10hp:
    http://vintagemachinery.org/pubs/2097/16338.pdf

    15hp:
    http://vintagemachinery.org/pubs/2097/16339.pdf

    20hp:
    http://vintagemachinery.org/pubs/2097/16344.pdf

    If the external power rating data plate is missing, maybe the motor has a data plate.

  10. Likes newcomer liked this post
  11. #8
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    31,369
    Post Thanks / Like

    Default

    anywhere from 20-50HP
    For what its worth - the most powerful #3 K&T in 1957 was 30 HP - but the "ram" (fancy overarm) had but 15 for the main

    Not exactly applicable since you have the HEAVIEST #3 made that year by CMM

    Just that king size knee says that

  12. Likes newcomer liked this post
  13. #9
    Join Date
    Nov 2014
    Country
    MALAYSIA
    Posts
    20
    Post Thanks / Like
    Likes (Given)
    6
    Likes (Received)
    5

    Default

    The nameplate is located in such a tight space that I'd need an endoscope to read it. The owner is considering to replace it with a new machine but nothing seems to come close to that 70 years old machine in terms of power. Not for a big sum at least. I'm kind of tempted to buy his #3 but that torque destroyer VFD conversion puts me off.

  14. #10
    Join Date
    Aug 2006
    Location
    Shelbyville, Ky
    Posts
    509
    Post Thanks / Like
    Likes (Given)
    45
    Likes (Received)
    190

    Default

    My #4 machine is 25hp on the main spindle 7.5 on the independent overarm.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •