Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Largest Manufacturing Technology Community on the Web
Stay Connected:
EE will chuck will not rotate in reverse
- Thread starter jprintz
- Start date
- Replies 9
- Views 2,291
rke[pler
Diamond
- Joined
- Feb 19, 2002
- Location
- Peralta, NM USA
Open up the DC panel and see what's happening. Have someone start and stop in forward while observing the forward contactor then try reverse and see if you see the same sort of operation. If the contactor isn't falling out of engagement you might have some debugging ahead of you.
Cal Haines
Diamond
- Joined
- Sep 19, 2002
- Location
- Tucson, AZ
What's the serial number and build date of the machine?
We need to see an overall photo of the machine, plus what's under the covers in the base. The big box next to the spindle motor is the DC Control Panel. We need a photo of that as well.
Cal
We need to see an overall photo of the machine, plus what's under the covers in the base. The big box next to the spindle motor is the DC Control Panel. We need a photo of that as well.
Cal
9100
Diamond
- Joined
- Nov 1, 2004
- Location
- Webster Groves, MO
The reverse contactor could have contacts worn down to where they are not quite touching when the coil is energized but bounce enough to just tap together momentarily. The question is, how did the reverse ones get worn to that point before the forward ones.
Bill
Bill
gustafson
Diamond
- Joined
- Sep 4, 2002
- Location
- People's Republic
Well, it is a 75 year old machine...someone could have changed the fwd relay 50 years ago.....
funny thought, what if the belt is not right, a just barely tensioned belt might work in fwd and not reverse........tho it would probably just fall off....he is threading, back gears...hmmm....does it have ELSR........
I want to thank: rek[pler, carl haines,9100, and gustafson for their response.
1) I have been trying to post machine pictures since 2/16--no luck yet.
2) Contactor contacts stay in the closed position in forward and reverse.
3) Flat belt was replaced years ago with a 3 groove "v" belt system-only using 2 belts-no slip.
4) I was trying to chase threads and the machine has ELSP.
5) Machine spindle RPM goes way faster in reverse.
1) I have been trying to post machine pictures since 2/16--no luck yet.
2) Contactor contacts stay in the closed position in forward and reverse.
3) Flat belt was replaced years ago with a 3 groove "v" belt system-only using 2 belts-no slip.
4) I was trying to chase threads and the machine has ELSP.
5) Machine spindle RPM goes way faster in reverse.
9100
Diamond
- Joined
- Nov 1, 2004
- Location
- Webster Groves, MO
Check the ELSR microswitches. I'm not sure what kind they are on your lathe. On my later square dial they are standard Microswitch brand that are available. There should also be a second speed control for reverse. On mine it is on the back of the head stock pedestal.
Bill
Cal Haines
Diamond
- Joined
- Sep 19, 2002
- Location
- Tucson, AZ
I need to see which DC panel you have before I can be much help. Send me an e-mail (click my name, in the upper left corner of this post). I would send you one, but you have that disabled in your profile (it's disabled by default).
Cal
Cal
9100;
I have been e-mailing Cal Haines about my Monarch EE. Can you send me your e-mail address so I can contact you direct. Cal said you rebuilt EE control boxes in the past. I have serial number 16181, dated 8-1942. This is a motor/generator not a tube model. Thanks Jim
I have been e-mailing Cal Haines about my Monarch EE. Can you send me your e-mail address so I can contact you direct. Cal said you rebuilt EE control boxes in the past. I have serial number 16181, dated 8-1942. This is a motor/generator not a tube model. Thanks Jim
9100
Diamond
- Joined
- Nov 1, 2004
- Location
- Webster Groves, MO
I have overhauled a couple of round dial panels. Email is [email protected] and phone is 314-963-9997. That is my cell, now my only phone, so you can reach me anytime, although I may not be overly polite at 4 AM.
Bill
Similar threads
