Lehmann Hydratrol 34x372 need manual
Close
Login to Your Account
Results 1 to 14 of 14
  1. #1
    Join Date
    Jul 2015
    Country
    UNITED STATES
    State/Province
    Utah
    Posts
    12
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    0

    Default Lehmann Hydratrol 34x372 need manual

    I have a rapid problem, it will move away from the chuck but not towards. Anyone know anything about this?

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,433
    Post Thanks / Like

    Default

    Have the manual for the 25" serial 5886 - I'll scan the RT page in the morning

    First thing that page cautions you about is having the drive motor turn the right way - has to make RT screw rotate CW when viewed from tail stock end

    Wrong way rotation causes the hyd. direction controls to not work right

    Here is that scan. A more "readable" version can be emailed if you want to private message me that address. Do put something in the subject line like Lehmann
    Attached Thumbnails Attached Thumbnails lehmann-rt-page.jpg  
    Last edited by johnoder; 01-27-2020 at 07:48 AM.

  3. Likes 4GSR, djensen liked this post
  4. #3
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,114
    Post Thanks / Like
    Likes (Given)
    2333
    Likes (Received)
    1046

    Default

    If that doesn't correct the problem, the two pistons that direct the hydraulic oil flow in the control handle on the carriage handwheel may have worn ball checks in them. Last, could be the clutch linings are worn completely out to where they won't engage the R.T. nut for pushing the carriage toward the chuck. Ken

  5. Likes djensen liked this post
  6. #4
    Join Date
    Jul 2015
    Country
    UNITED STATES
    State/Province
    Utah
    Posts
    12
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    0

    Default

    Thank you, this explains how the system works, quite ingenious. I'm a Doosan tech and get tasked to repair off brand machines for customers often. I don't want to do exploratory surgery, and run the cost through the roof, because of a simple adjustment. I actually have two Lehman lathes with this problem from two different customers. Keep the spindles turning! Thank You again!

  7. #5
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,433
    Post Thanks / Like

    Default

    PDF sent of manual - maybe it will be useful. Pretty slim at 12 pages

  8. Likes JekaMandra liked this post
  9. #6
    Join Date
    Feb 2020
    Country
    RUSSIAN FEDERATION
    Posts
    4
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default

    Hello! Suddenly i have bot this toy.....
    YouTube
    in very poor condition. If you dont mind please send me manual too....

    Thanks a lot.

  10. #7
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,433
    Post Thanks / Like

    Default

    Нужен адрес электронной почты

    :d

  11. #8
    Join Date
    Feb 2020
    Country
    RUSSIAN FEDERATION
    Posts
    4
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default

    [email protected]

    Thanks a lot again!

  12. #9
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,433
    Post Thanks / Like

    Default

    Quote Originally Posted by JekaMandra View Post
    [email protected]

    Thanks a lot again!

    Your toughest job will getting the oil to do all those things just right

    ad-showing-hyd.-headstock.jpg

    Lehmann thought LAPPING was the way to get gear teeth just right

    tooling-gear-lapper.jpgolder-gear-lapper.jpgnewer-gear-lapper.jpg

  13. Likes 4GSR liked this post
  14. #10
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,114
    Post Thanks / Like
    Likes (Given)
    2333
    Likes (Received)
    1046

    Default

    Always wondered if those gear lappers they built and used ever did a good job of lapping gear teeth on the headstock gears???

    The picture of the oiling system shown above, I have the original artwork that was used to shoot the picture used in publications. Saved from a dumpster dive many years ago at Drilco in Houston. Ken

  15. #11
    Join Date
    Feb 2020
    Country
    RUSSIAN FEDERATION
    Posts
    4
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default

    Hello!
    Where is a serial number may be on a lathe???? cant find it. Interesting a year of build my toy.....
    Thanks.

    Have bot oil. 80 litres of Mobil DTE medium... i change oil filter on a external unit.... repair same gears shift device...

  16. #12
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,114
    Post Thanks / Like
    Likes (Given)
    2333
    Likes (Received)
    1046

    Default

    Lehmann stamped the serial number in two places that I know of on the older lathes built before 1976. Anything newer, have no clue where the s/n is stamped. On the older lathes, it's generally stamped at the tail end of the bed between the flat and the vee. They also stamped it on the top side of the saddle at the front. Find the s/n and post. One of us can provide a approximate year of build for you. Ken

    Edit: Mobil DTE mediun should be just fine. Do not run any oil heavier than that.

  17. #13
    Join Date
    Feb 2020
    Country
    RUSSIAN FEDERATION
    Posts
    4
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default

    Quote Originally Posted by 4GSR View Post
    Edit: Mobil DTE mediun should be just fine. Do not run any oil heavier than that.
    Thanks. Very. I already got mobil dte. My unit was not running all USSR period on a good oil fact. unknown regular very poor black not clear oil 40 litres was in. oil filter - YouTube . It still works!
    YouTube

    in my opinion lathe wow2 years....

  18. Likes 4GSR liked this post
  19. #14
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,114
    Post Thanks / Like
    Likes (Given)
    2333
    Likes (Received)
    1046

    Default

    Nice to see them old Lehmann's still in service! Those were some sweet running lathes for their time! You could shift speeds without stopping the spindle except for back gear and reverse!

    BTW- The serial number for that size lathe 32"-36", starts with a "C" followed by a three digit number. Example "C123".

    Ken


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
  •