I just acquired a Servo small drill press. These are really nice
variable speed precision drills, with a dila indicator depth readout.

Unfortunately, mine was a bit abused, and I'm in the process of fixing it
up. The downfeed lever screws into a hub that is on the end of the
pinion shaft. In theory, the hub is only held in place by the pressure
of the lever being used as an oversized setscrew. Mine is stuck on
firmly, and the handle has been used loose, which has wallowed out the
threads in the hub. I'm ordering a new hub, but I need to get the old
one off. My biggest fear is that some nitwit epoxied in on, although I
can't see anything suspicious.

I am going to try some Kroil, but I suspect I may have to apply some
force to get the old hub off. The easiest way to avoid putting any force
on any of the internal gears or bearings is to cut/grind a couple grooves
in the sides of the hub, and use a small 2-arm gearpuller to pop it off.

The hub is about an inch in diameter, and the end of the shaft is about a
quarter of an inch. Most "small" gear puller all seem to be a bit too
big. There also seem to be a lot of small specialized pullers for
"armature bearings", and "Pittman Arms", but many don't really indicate
how big they are. A lot of pullers are rated by tonage, and I'd guess
1/2 ton would be plenty, but they don't seme to come that small.

For example, this one looks lovely:

http://www.amazon.com/OTC-7311A-Pitm.../dp/B0002SRGHK

but it doesn't say how close the jaws will close, and it costs a fortune.

Anyone got a likely device they can recommend? I can always build
something, but I have enough projects piled up as it is.

Thanks!

Doug White

On Mon, 13 Jun 2011 02:03:28 GMT, Doug White
wrote:

I just acquired a Servo small drill press. These are really nice
variable speed precision drills, with a dila indicator depth readout.

Unfortunately, mine was a bit abused, and I'm in the process of fixing it
up. The downfeed lever screws into a hub that is on the end of the
pinion shaft. In theory, the hub is only held in place by the pressure
of the lever being used as an oversized setscrew. Mine is stuck on
firmly, and the handle has been used loose, which has wallowed out the
threads in the hub. I'm ordering a new hub, but I need to get the old
one off. My biggest fear is that some nitwit epoxied in on, although I
can't see anything suspicious.

I am going to try some Kroil, but I suspect I may have to apply some
force to get the old hub off. The easiest way to avoid putting any force
on any of the internal gears or bearings is to cut/grind a couple grooves
in the sides of the hub, and use a small 2-arm gearpuller to pop it off.

The hub is about an inch in diameter, and the end of the shaft is about a
quarter of an inch. Most "small" gear puller all seem to be a bit too
big. There also seem to be a lot of small specialized pullers for
"armature bearings", and "Pittman Arms", but many don't really indicate
how big they are. A lot of pullers are rated by tonage, and I'd guess
1/2 ton would be plenty, but they don't seme to come that small.

For example, this one looks lovely:

http://www.amazon.com/OTC-7311A-Pitm.../dp/B0002SRGHK

but it doesn't say how close the jaws will close, and it costs a fortune.

Anyone got a likely device they can recommend? I can always build
something, but I have enough projects piled up as it is.

Thanks!

Doug White

I've got a tiny one, 1/4" screw extension, 4" long arms. Says Cal-Van
USA. I don't remember where I got it, probably an auto parts store.
They're out there. A problem might be clearance behind the hub. Mine
needs at least 1/4", although you could reduce that with some
judicious grinding on the arms. The other problem is finding a
suitable thrust bearing. The screw end is a truncated cone.

Good luck.

Pete Keillor

On Mon, 13 Jun 2011 02:03:28 GMT, Doug White
wrote:

I just acquired a Servo small drill press. These are really nice
variable speed precision drills, with a dila indicator depth readout.

Unfortunately, mine was a bit abused, and I'm in the process of fixing it
up. The downfeed lever screws into a hub that is on the end of the
pinion shaft. In theory, the hub is only held in place by the pressure
of the lever being used as an oversized setscrew. Mine is stuck on
firmly, and the handle has been used loose, which has wallowed out the
threads in the hub. I'm ordering a new hub, but I need to get the old
one off. My biggest fear is that some nitwit epoxied in on, although I
can't see anything suspicious.

I am going to try some Kroil, but I suspect I may have to apply some
force to get the old hub off. The easiest way to avoid putting any force
on any of the internal gears or bearings is to cut/grind a couple grooves
in the sides of the hub, and use a small 2-arm gearpuller to pop it off.

The hub is about an inch in diameter, and the end of the shaft is about a
quarter of an inch. Most "small" gear puller all seem to be a bit too
big. There also seem to be a lot of small specialized pullers for
"armature bearings", and "Pittman Arms", but many don't really indicate
how big they are. A lot of pullers are rated by tonage, and I'd guess
1/2 ton would be plenty, but they don't seme to come that small.

For example, this one looks lovely:

http://www.amazon.com/OTC-7311A-Pitm.../dp/B0002SRGHK

but it doesn't say how close the jaws will close, and it costs a fortune.

Anyone got a likely device they can recommend? I can always build
something, but I have enough projects piled up as it is.

Thanks!

Doug White

You might try a battery terminal puller.

Bob

On 6/12/2011 9:04 PM, Bob wrote:
On Mon, 13 Jun 2011 02:03:28 GMT, Doug
wrote:

I just acquired a Servo small drill press. These are really nice
variable speed precision drills, with a dila indicator depth readout.

Unfortunately, mine was a bit abused, and I'm in the process of fixing it
up. The downfeed lever screws into a hub that is on the end of the
pinion shaft. In theory, the hub is only held in place by the pressure
of the lever being used as an oversized setscrew. Mine is stuck on
firmly, and the handle has been used loose, which has wallowed out the
threads in the hub. I'm ordering a new hub, but I need to get the old
one off. My biggest fear is that some nitwit epoxied in on, although I
can't see anything suspicious.

I am going to try some Kroil, but I suspect I may have to apply some
force to get the old hub off. The easiest way to avoid putting any force
on any of the internal gears or bearings is to cut/grind a couple grooves
in the sides of the hub, and use a small 2-arm gearpuller to pop it off.

The hub is about an inch in diameter, and the end of the shaft is about a
quarter of an inch. Most "small" gear puller all seem to be a bit too
big. There also seem to be a lot of small specialized pullers for
"armature bearings", and "Pittman Arms", but many don't really indicate
how big they are. A lot of pullers are rated by tonage, and I'd guess
1/2 ton would be plenty, but they don't seme to come that small.

For example, this one looks lovely:

http://www.amazon.com/OTC-7311A-Pitm.../dp/B0002SRGHK

but it doesn't say how close the jaws will close, and it costs a fortune.

Anyone got a likely device they can recommend? I can always build
something, but I have enough projects piled up as it is.

Thanks!

Doug White

You might try a battery terminal puller.

Bob

you might drill a couple of holes in the hub at 180 deg, put in screws,
or a pin and use that for attaching a metal U, and then just pull on the
U in any of the normal ways

--
www.wbnoble.com

On Jun 12, 7:03*pm, Doug White wrote:
I just acquired a Servo small drill press. *These are really nice
variable speed precision drills, with a dila indicator depth readout.

Unfortunately, mine was a bit abused, and I'm in the process of fixing it
up. *The downfeed lever screws into a hub that is on the end of the
pinion shaft. *In theory, the hub is only held in place by the pressure
of the lever being used as an oversized setscrew. *Mine is stuck on
firmly, and the handle has been used loose, which has wallowed out the
threads in the hub. *I'm ordering a new hub, but I need to get the old
one off. *My biggest fear is that some nitwit epoxied in on, although I
can't see anything suspicious.

I am going to try some Kroil, but I suspect I may have to apply some
force to get the old hub off. *The easiest way to avoid putting any force
on any of the internal gears or bearings is to cut/grind a couple grooves
in the sides of the hub, and use a small 2-arm gearpuller to pop it off.

The hub is about an inch in diameter, and the end of the shaft is about a
quarter of an inch. *Most "small" gear puller all seem to be a bit too
big. *There also seem to be a lot of small specialized pullers for
"armature bearings", and "Pittman Arms", but many don't really indicate
how big they are. *A lot of pullers are rated by tonage, and I'd guess
1/2 ton would be plenty, but they don't seme to come that small. *

For example, this one looks lovely:

http://www.amazon.com/OTC-7311A-Pitm.../dp/B0002SRGHK

but it doesn't say how close the jaws will close, and it costs a fortune.

Anyone got a likely device they can recommend? *I can always build
something, but I have enough projects piled up as it is.

Thanks!

Doug White

Try Auto Zone if there is one near you. They have a loan a tool
program for free tool rental. They also assume the risk of tool
breakage. You just got to put up a deposit and return it within 90
days for a full refund.

Roger Shoaf