G4003 clone, motor won’t reverse.

[Jbrracer]

Hello and thank you in advance for any help.

I bought this lathe Sunday, on said lathe is a 110/220 4 pole single phase 1.5hp motor that is original to the lathe.
Running on 220v single phase power.

As is, when the spindle lever is flipped up at the apron the motor starts and spins the chuck counter clock wise if facing the chuck away from the tool post. If I flip the lever down the motor bucked hummed and blew the motor capacitor.

The three contractors operate what I think is correct, MS closes when the “power/arm” button is pressed, this has to been don’t to make anything work.

The one labeled ms1 closes when the carriage lever is switched to the up position.
This is the direction that blew the original capacitor.

MS2 closes when the lever is in the down position, this is the only way to get the motor/chuck to spin.

I’ve included some photos.
The motor wiring diagram shows 1,2,3,4,5,6 but the physical wires are 1,2,3,3,4,5,6
So I did label the 3 that was connect as 31 or 3prime. The lathe itself has 5 wires to the motor u1, v2, z1 and z2 was disconnected and taped.
As of now and as the way I received the lathe;
M=motor side
L=lathe power to motor
Lu1 to m1
Lv2 to m3prime
Lz1 to 5
236 are tied together but not connect to power.

I’m pretty proficient with a multimeter, but I don’t want to damage anything or make any bone head mistakes. Hopefully this is well written enough to get me going.

Thanks again,
Jeff Fort Wayne Indiana

Edit*1 added incoming voltage and motor connection photo

 

[markba633csi]

Jeff: What is the incoming voltage now? 120 or 240?
Really need to see the motor terminal block to make better sense of it- text descriptions go sideways so easily I'd rather work from a picture
-Mark
I can tell from the control box this is a very early machine

 

[Jbrracer]

Jeff: What is the incoming voltage now? 120 or 240?
Really need to see the motor terminal block to make better sense of it- text descriptions go sideways so easily I'd rather work from a picture
-Mark

Door I knew I’d miss something, incoming is 220. I’ll include a photo of the motor terminals.

Thank you!

 

[markba633csi]

OK well first off there should be 6 motor wires not 7 so we'll need to straighten that out. Did the cap explode and leak? Did you replace it yet?
I'm going to hit the sack now but I'll revisit this tomorrow for sure
ciao
-M

 

[Jbrracer]

OK well first off there should be 6 motor wires not 7 so we'll need to straighten that out. Did the cap explode and leak? Did you replace it yet?
I'm going to hit the sack now but I'll revisit this tomorrow for sure
ciao
-M

There are six wires on the motor, five from the lathe four green and a ground.
The capacitor popped smoked and leaked, the trifecta. It has been replaced with a equivalent capacitor 400 mfd

Sleep tight and thanks again

 

[markba633csi]

OK on the motor terminal block, read off to me the wires as connected now starting with the top row going left to right. Top row start with "T"
so for example T1= (?) T2= (?) and so forth to T4
Then bottom row would be B1= (?) and so forth to B4 (which I can see is empty)
-M
In your first post you indicate 7 wires 1233456 explain?

 

[Jbrracer]

OK on the motor terminal block, read off to me the wires as connected now starting with the top row going left to right. Top row start with "T"
so for example T1= (?) T2= (?) and so forth to T4
Then bottom row would be B1= (?) and so forth to B4 (which I can see is empty)
-M

This is the diagram I drew when replacing the capacitor. T=motor side b=lathe side
T1=1 t2=3prime t3=5 t4=346
B1=u1 b2=v2 b3=z1 b4=Blank
Z2 was disconnected and taped.

Ignore the cig butts nasty habit I can’t kick yet, if I could stop it could make the monthly payment on a haas or at least a import cnc mill.

As always thank you !

 

[markba633csi]

OK it looks like your 3' is actually 2 since I don't see a 2. However, in the photo I see a black wire on T3 and another black
down below but can't see where it goes. Where does that lower black go?

Clearly, 2,4, and 6 should go together according to the motor plate

I'm going to draw a sketch for ya

 

[Jbrracer]

OK it looks like your 3' is actually 2 since I don't see a 2. However, in the photo I see a black wire on T3 and another black
down below but can't see where it goes. Where does that lower black go?

The black wire you see in the bottom of the box is just a ground from motor box to lathe box ground.

 

[markba633csi]

Edit: possible factory motor data plate error
Main windings are apparently 1-3 and 2-4
see posts 22,23
edit: this should represent the correct hookup: (1 and 2 could be interchanged to match rotation with apron lever, or Z2 could be used instead of Z1)