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How is it done ?,
| Charlie, | 10/11/2011 22:13:16 |
| 76 forum posts 1 photos | Hi Chaps, Must be somone here who knows how its done,I have a Myford
super 7,And on the tumbler reverse two tuffnol gears,One of the gears has
a single tooth missing,I have a new spare, Have removed the whole tumbler
reverse unit but cant see how to remove the the damaged gear, It looks like
it is a force fit in the unit,Dont want to get violent with it but is this a big hammer
and a drift job???, |
| blowlamp | 10/11/2011 22:21:50 |
 1885 forum posts 111 photos | I *think* there is a grub screw to lock the shaft into position.
Martin. |
| Charlie, | 10/11/2011 23:16:39 |
| 76 forum posts 1 photos | Hiya martin, Yes there is a long grubscrew with a locking nut that holds the whole
tumbler reverse unit in the lathe,But my problem is how to remove
the spindles on which the tuffnol gears run from the unit once i have it
out of the lathe,But thanks for your input so far, |
| blowlamp | 11/11/2011 00:34:04 |
1885 forum posts 111 photos | Charlie.
Yes, I understand that.
Is there an Allen key type of grub screw through the side of the body that secures the spindle?
Martin. |
| John Stevenson | 11/11/2011 00:41:47 |
 5068 forum posts 3 photos | The spindle holding the Tufnol gear on is just a press fit. John S. |
| Charlie, | 11/11/2011 00:46:36 |
| 76 forum posts 1 photos | Martin No, once the unit is out of the lathe i can see no means of securing the
spindles to the unit,They seem to have been forced in or shrunk in, I can
see no way of removing them that dose not involve using a certiain amount
of force, And i am reluctant to use force, But there must be a way, I canot
be the first person to want to replace one of the tuffnol gears |
| Chris Trice | 11/11/2011 01:31:19 |
 1376 forum posts 10 photos | I think you missed John's post above.
|
| Charlie, | 11/11/2011 09:13:34 |
| 76 forum posts 1 photos | Yes Chris you are right i did miss it, No excuse cept im old and its late, And
thank you John A press fit, That is basicaly what i wanted to know
Very gratefull for the input chaps thanks all, |
| Mike | 11/11/2011 09:59:38 |
 713 forum posts 6 photos | Charlie: I had just this problem on a Myford I once owned. Got the spindle out OK, but pressed it back too tightly. Result was that next time I used the lathe on a high speed, the heat of friction set the oil on fire and burnt the new Tufnol gear, so it was back to square one... I was more careful second time around! |
| Joseph Ramon | 11/11/2011 10:51:51 |
 107 forum posts | Mike
You are Chuck the Muddle Engineer and I Claim My Five Pounds
 Joey
|
| KWIL | 11/11/2011 12:23:08 |
| 3681 forum posts 70 photos | Please also be aware that when securing the long grub screw, only take it to the point where it "holds" the unit in place, any further pressure not only makes the operation of the tumbler arm tight, it can also eventually force out the spindle which is a press fit as well. |
| Charlie, | 12/11/2011 21:15:42 |
| 76 forum posts 1 photos | Thanks chaps In spite of there being just one tooth missing on the gear wheel
everything is running well, Its just the damn ticking that gets me
down,Going to have to bite the bullet and do the job somtime soon
Charlie, |
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All Forum Topics > Beginners questions > How is it done ?,