|
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the? auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@... From: dieselm@... Date: Sun, 19 May 2013 13:37:56 +0000 Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
?
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
I just tried it and moved the hi-low lever all the way to lo while turning the spindle by hand so the teeth engaged. Ran it very low speed on the speed dial just to when I heard the clicking/thunking noise. When I hear the thunk, I can see the drive belt flex. Turned off the unit, changed the hi-lo lever to high and started it up again, and it's much louder. I don't think this will break in. I'm not looking forward to taking the entire headstock off.
Thanks
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@...> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@...
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
Solved!!! Belt was loose and was skipping a tooth. Couldn't see it until I removed the gears on the back then the back housing. Adjusting it is a chore as when I tighten the 2 nuts, the motor shifts up and puts the slack back into the belt. There's some type of gib screw between the screws I'll have to see if it affects the adjustment.
Thanks
P.S. From what I've read, taking of the headstock to grease the gears wouldn't be a bad idea and may be necessary in the future unless they're greasing that properly these days since that doc was written about several years ago.
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@...> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@...
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
Glad to hear you got it sorted - from the description it didn't occur to me that the belt might be skipping.
I don't know whpo came up with the tension adjustment as it's a real PITA, thankfully you don't need to do it very often - I've done mine twice in nine years. once in initial set up and the second when a faulty motor drive gear broke.
If you have plastic gears they are normally dry from the factory and in theory don't really need greasing as they are self lubricating but it doesn't do any harm and will quieten them up a little. Metal gears do need lubing quite regularly.
Some people still suggest stripping the head to clean out any manufacturing debris and then lubing and rebuilding but I never bothered and nine years later no problems. Far less people seem to suggest this nowadays and not many seem to have problems. I reckon the Chinese quality control is now a lot better than it was and improving
If your happy to skip this you can lube the gears without removing the headstock. To do this you need an aerosol can of white lithium spray grease with an extension tube (any car or DIY store should have it quite cheaply).
Simply remove the two top screws on the front of the headstock that fasten the control box in place. The holes give a free passage to the gears. Insert the extension tube and spray away waggling the tube up and down and side to side. Turn the chuck (by hand) about half a turn and repeat a few times. No need to go mad with the spraying.
Replace the screws and you are good to go! You should notice a difference.
Gerry W
Leeds UK
To: 7x12minilathe@... From: dieselm@... Date: Sun, 19 May 2013 17:24:46 +0000 Subject: [7x12minilathe] Re: Spindle Lopes and Clicks when Rotating
?
Solved!!! Belt was loose and was skipping a tooth. Couldn't see it until I removed the gears on the back then the back housing. Adjusting it is a chore as when I tighten the 2 nuts, the motor shifts up and puts the slack back into the belt. There's some type of gib screw between the screws I'll have to see if it affects the adjustment.
Thanks
P.S. From what I've read, taking of the headstock to grease the gears wouldn't be a bad idea and may be necessary in the future unless they're greasing that properly these days since that doc was written about several years ago.
--- In 7x12minilathe@..., gerry waclawiak wrote:
>
> There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
>
> You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
> The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
> The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
>
>
> I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
>
> You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
>
> If there is something else in the speed change mechanism it is really a head off job.
>
> Gerry W
> Leeds UK
>
>
> If this doesn't work it is realy
>
> To: 7x12minilathe@...
> From: dieselm@...
> Date: Sun, 19 May 2013 13:37:56 +0000
> Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Hello,
>
>
>
> First, I'd like to thank everyone that has answered my questions!!
>
>
>
> I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
>
>
>
> Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
>
>
>
> Thanks
>
|
On 05/19/2013 11:03 AM, gerry waclawiak wrote:
Glad
to hear you got it
sorted - from the description it didn't occur to me that the belt might
be skipping.
I don't know whpo came up with the
tension adjustment as it's a real PITA, thankfully you
don't need to do it very often - I've done
mine twice in nine years. once in initial set up and the
second when a faulty motor drive gear broke.
Mine kept slipping so that's when I built that saddle out of what I
had laying around.??? Adjusting was easy and it hasn't moved since.
--
Jerry Durand, Durand Interstellar, Inc.
tel: +1 408 356-3886, USA toll free: 1 866 356-3886
Skype: jerrydurand
|
You need to remove the headstock to access the speed change gearing. On mine, the shift linkage needed some fiddling to get it give full gear engagement in both speeds. Since the shifter works by sliding straight toothed gears, it sometimes needs a little spindle rotation to get them aligned for full engagement.
Roy
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., "newmachineshop" <dieselm@...> wrote:
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
Taking the headstock off looks like it would be harder than it actually is!
Roy
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., "newmachineshop" <dieselm@...> wrote:
I just tried it and moved the hi-low lever all the way to lo while turning the spindle by hand so the teeth engaged. Ran it very low speed on the speed dial just to when I heard the clicking/thunking noise. When I hear the thunk, I can see the drive belt flex. Turned off the unit, changed the hi-lo lever to high and started it up again, and it's much louder. I don't think this will break in. I'm not looking forward to taking the entire headstock off.
Thanks
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
There's a design for an improved motor mount, based on a gate hinge, in the "files" section.
Roy
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., "newmachineshop" <dieselm@...> wrote:
Solved!!! Belt was loose and was skipping a tooth. Couldn't see it until I removed the gears on the back then the back housing. Adjusting it is a chore as when I tighten the 2 nuts, the motor shifts up and puts the slack back into the belt. There's some type of gib screw between the screws I'll have to see if it affects the adjustment.
Thanks
P.S. From what I've read, taking of the headstock to grease the gears wouldn't be a bad idea and may be necessary in the future unless they're greasing that properly these days since that doc was written about several years ago.
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
Actually, after I took the back cover off, electronics cover off, rear gears off and lead screw off, just to adjust the belt, all I had left to do was to take out the 3 screws that hold the headstock off. I read those 3 screws are really tight and need a leverage bar so I decided to pass on that for now. That idea to spray some white grease in the holes sounds like a good idea to me.
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., "Roy" <roylowenthal@...> wrote:
Taking the headstock off looks like it would be harder than it actually is!
Roy
--- In 7x12minilathe@..., "newmachineshop" <dieselm@> wrote:
I just tried it and moved the hi-low lever all the way to lo while turning the spindle by hand so the teeth engaged. Ran it very low speed on the speed dial just to when I heard the clicking/thunking noise. When I hear the thunk, I can see the drive belt flex. Turned off the unit, changed the hi-lo lever to high and started it up again, and it's much louder. I don't think this will break in. I'm not looking forward to taking the entire headstock off.
Thanks
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
Or my saddle. The RTV was just because I made it a tiny bit too wide
and didn't want the motor to rock.
toggle quoted message
Show quoted text
On 05/19/2013 06:34 PM, Roy wrote: There's a design for an improved motor mount, based on a gate hinge, in the "files" section.
Roy
--
Jerry Durand, Durand Interstellar, Inc. www.interstellar.com
tel: +1 408 356-3886, USA toll free: 1 866 356-3886
Skype: jerrydurand
|
It's been a few years since I did mine, I don't remember it taking heroic measures to get it off. Then again, I routinely use long armed hex keys & I don't hesitate to smack the end of the key with a bronze hammer to help loosen things up.
Roy
toggle quoted message
Show quoted text
--- In 7x12minilathe@..., "newmachineshop" <dieselm@...> wrote:
Actually, after I took the back cover off, electronics cover off, rear gears off and lead screw off, just to adjust the belt, all I had left to do was to take out the 3 screws that hold the headstock off. I read those 3 screws are really tight and need a leverage bar so I decided to pass on that for now. That idea to spray some white grease in the holes sounds like a good idea to me.
--- In 7x12minilathe@..., "Roy" <roylowenthal@> wrote:
Taking the headstock off looks like it would be harder than it actually is!
Roy
--- In 7x12minilathe@..., "newmachineshop" <dieselm@> wrote:
I just tried it and moved the hi-low lever all the way to lo while turning the spindle by hand so the teeth engaged. Ran it very low speed on the speed dial just to when I heard the clicking/thunking noise. When I hear the thunk, I can see the drive belt flex. Turned off the unit, changed the hi-lo lever to high and started it up again, and it's much louder. I don't think this will break in. I'm not looking forward to taking the entire headstock off.
Thanks
--- In 7x12minilathe@..., gerry waclawiak <gerrywac@> wrote:
There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
If there is something else in the speed change mechanism it is really a head off job.
Gerry W
Leeds UK
If this doesn't work it is realy
To: 7x12minilathe@...
From: dieselm@
Date: Sun, 19 May 2013 13:37:56 +0000
Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
Hello,
First, I'd like to thank everyone that has answered my questions!!
I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
Thanks
|
I discovered, over the weekend, that the belt on my lathe was also loose and skipping. What a pain in the ass to adjust the tension. But since I have the lathe ripped half apart I've decided now is a good time to clean things up and readjust gibs and such.
On Sun, May 19, 2013 at 10:38 PM, Roy <roylowenthal@...> wrote:
?
It's been a few years since I did mine, I don't remember it taking heroic measures to get it off. Then again, I routinely use long armed hex keys & I don't hesitate to smack the end of the key with a bronze hammer to help loosen things up.
Roy
--- In 7x12minilathe@..., "newmachineshop" wrote:
>
> Actually, after I took the back cover off, electronics cover off, rear gears off and lead screw off, just to adjust the belt, all I had left to do was to take out the 3 screws that hold the headstock off. I read those 3 screws are really tight and need a leverage bar so I decided to pass on that for now. That idea to spray some white grease in the holes sounds like a good idea to me.
>
> --- In 7x12minilathe@..., "Roy" wrote:
> >
> > Taking the headstock off looks like it would be harder than it actually is!
> >
> >
> >
> > Roy
> >
> > --- In 7x12minilathe@..., "newmachineshop" wrote:
> > >
> > > I just tried it and moved the hi-low lever all the way to lo while turning the spindle by hand so the teeth engaged. Ran it very low speed on the speed dial just to when I heard the clicking/thunking noise. When I hear the thunk, I can see the drive belt flex. Turned off the unit, changed the hi-lo lever to high and started it up again, and it's much louder. I don't think this will break in. I'm not looking forward to taking the entire headstock off.
> > >
> > > Thanks
> > >
> > > --- In 7x12minilathe@..., gerry waclawiak wrote:
> > > >
> > > > There is no detent to hold the lever in position so when you change gear you need to make sure that the lever moves fully left or right.
> > > >
> > > > You are right in not trying to change gear whilst the lathe is running, that could lead to breaking the gears.
> > > > The best way to change and ensure full movement is to rotate the chuck slowly by hand in the normal direction whilst changing the lever and it should move fully one way or the other
> > > > The noise is possibly that the gears are new and not run in. Most lathes have plastic gears but some have metal which are naturally noiser.
> > > >
> > > >
> > > > I would suggest that provided nothing is locking or grinding that you run the lathe for a while to give the gears a chance to mesh and run in and things should improve.
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> > > > You might also like to check the positioning of the lever for the auto feed. Often the detent positions for that lever (dimples in the headstock casting) are poorly defined and the change gears might be rubbing slightly.
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> > > > If there is something else in the speed change mechanism it is really a head off job.
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> > > > Gerry W
> > > > Leeds UK
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> > > > If this doesn't work it is realy
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> > > > To: 7x12minilathe@...
> > > > From: dieselm@
> > > > Date: Sun, 19 May 2013 13:37:56 +0000
> > > > Subject: [7x12minilathe] Spindle Lopes and Clicks when Rotating
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> > > > Hello,
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> > > > First, I'd like to thank everyone that has answered my questions!!
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> > > > I've run into my first problem with the HF 7x12 Mini-lathe. When I rotate the spindle/chuck it doesn't always rotate smooth. I can feel high spots or loping. After rotating it for awhile by hand, it seemed to get smooth. I took the cover off the threading/power feed gear area. I have the spindle direction lever in neutral so the gears aren't engaged. I tried running the unit for a couple seconds and I hear a clicking noise so shut it off. The HI-LOW lever seems to stop in different positions. NO, I didn't try to change it while running. Sometimes the lever moves all the way towards the tailstock and touches the housing and sometimes it stops an inch short of it. Moving it either way doesn't make the spindle rotate smooth.
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> > > > Any ideas what I need to look at or do I need to take the entire headstock off to access the hi-low system? I don't see anyway to access that lever.
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> > > > Thanks
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gerry waclawiak