American Lathe Oil Pump Problem
Close
Login to Your Account
Results 1 to 10 of 10
  1. #1
    Join Date
    Dec 2005
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    1,961
    Post Thanks / Like
    Likes (Given)
    494
    Likes (Received)
    651

    Default American Lathe Oil Pump Problem


    No flow in the sight glass under the word American. Oil level is good as evidenced by the oil level tube lower on the head. I thought maybe the filter was plugged so pulled that. Nope. Filter is dry. Running the lathe with the filter removed no oil at the filter. So am thinking the pump isnít turning or the pickup tube is plugged or has fallen off. Anyone been in the head of one of these lathes? Where is the pump located? Not really seeing access panels.


    Sent from my iPhone using Tapatalk

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    32,226
    Post Thanks / Like

    Default

    Earlier Pacemaker just says "A reversing type, packless pump driven by the initial drive shaft". In other words - probably at the opposite end from the clutch and input sheave

  3. #3
    Join Date
    Apr 2018
    Country
    UNITED STATES MINOR OUTLYING ISLANDS
    Posts
    8,249
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    4016

    Default

    Quote Originally Posted by adh2000 View Post
    Anyone been in the head of one of these lathes? Where is the pump located? Not really seeing access panels.
    The top casting comes off the headstock easy. Underneath that is like a distribution plate with holes in it that drip onto bearings and gears. If you ease the clutch lever on with that top casting off, there will be oil everywhere ... or should be. I've forgotten where the pump lives but there's manuals available at that tonys uk lathe site or elsewhere. The "filter" handle is just one of those cylindrical screens with a scraper things that elderly machines used to have, there's no real filter.

  4. #4
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    1,991
    Post Thanks / Like
    Likes (Given)
    1380
    Likes (Received)
    797

    Default

    An older version lathe, and parts manual than yours, but maybe the guts are similar. E-36 is the oil pump, with E-28 looking like a pin that could break or fall out, and thus pump not drive. Maybe like your lathe, but not sure.

    63.jpg 64.jpg 65.jpg

    From Vintage Machinery:
    American Tool Works Co. - Publication Reprints - American Pacemaker Lathes Parts Catalog : Bulletin No. 20 | VintageMachinery.org

    The pdf, page 7:
    http://vintagemachinery.org/pubs/1004/21669.pdf

  5. Likes adh2000 liked this post
  6. #5
    Join Date
    Jul 2009
    Location
    Munster, In. USA
    Posts
    2,589
    Post Thanks / Like
    Likes (Given)
    558
    Likes (Received)
    850

    Default

    Be sure oil level sight tube is not stained giving the false impression that oil level is correct.
    If this was recently hooked up to power check for proper motor direction.
    No oil will be supplied if direction is wrong.
    John

  7. #6
    Join Date
    Dec 2005
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    1,961
    Post Thanks / Like
    Likes (Given)
    494
    Likes (Received)
    651

    Default



    Thanks guys. The oil pump is in that location so thatís helpful. I can see it through a panel on top of the head. Way down in there past a bunch of gears and shafts. Thereís an access panel behind the spindle. Open that and I can see the end of the oil pump.

    For EG yes it does have a filter.


    Sent from my iPhone using Tapatalk

  8. Likes texasgunsmith liked this post
  9. #7
    Join Date
    Dec 2005
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    1,961
    Post Thanks / Like
    Likes (Given)
    494
    Likes (Received)
    651

    Default

    The pump and the opening in the casting are as shown in the drawing. The pump wonít fit through the opening. Why did they bother with this small access viewport? Anyway, now what?


    Sent from my iPhone using Tapatalk

  10. #8
    Join Date
    Apr 2018
    Country
    UNITED STATES MINOR OUTLYING ISLANDS
    Posts
    8,249
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    4016

    Default

    Quote Originally Posted by adh2000 View Post
    For EG yes it does have a filter.
    You've got the newer, squarey-style one.

    I'm jealous as hell

    Anyway, now what?
    Know anyone with really long skinny arms ?

    Can you get to the other end to spin it, see if it pumps anything ? With the lid off, if you engage the clutch you should see oil spewing like a Texas gusher. If I remember right (no guarantees) the pump only pumps when the spindle is turning.

    p.s. Had to remove an ad-blocking rule to see your photos, sorry for the bad assumption earlier. Think they are pretty much the same inside though, they mostly made the castings look groovier. And the feed arrangement is a little nicer ... and the tailstock ... and the ways are hard ... good thing I'm too old to want one or I'd feel really bad

  11. Likes adh2000 liked this post
  12. #9
    Join Date
    Dec 2005
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    1,961
    Post Thanks / Like
    Likes (Given)
    494
    Likes (Received)
    651

    Default

    The oil filter screws onto a flange held to the back of the head by six cap screws. Removed the flange, flange has a ball check valve in it. Ran the machine with the flange removed for a minute and oil started gushing out all over the place. Put the flange and oil filter back on and weíre all good, oil flowing all around. I know this machine sat for years and years and years. Maybe the pump was so dry it couldnít prime working against the check valve spring. Really I donít know. Iím so glad itís working and I donít have to pull the head apart. Itís a happy day.


    Sent from my iPhone using Tapatalk

  13. Likes JohnEvans, jhruska, texasgunsmith liked this post
  14. #10
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    1,991
    Post Thanks / Like
    Likes (Given)
    1380
    Likes (Received)
    797

    Default

    Great news ! But it would have made great pics to see it apart.


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
  •