Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Old February 20th 08, 03:37 AM posted to rec.crafts.metalworking
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Default Clausing 5904

Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks
Darkstar

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Old February 20th 08, 04:21 AM posted to rec.crafts.metalworking
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Default Clausing 5904

In article ,
Darkstar wrote:

Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks


I think you have air in the hydraulic system. The fix is to bleed the
air out of the system. The instructions are in the manual (available
from Clausing for ~$25.00). You will need to get some hydraulic fluid.
Clausing recommends Mobil DTE24, which is available from MSC.

Joe Gwinn
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Old February 20th 08, 05:10 AM posted to rec.crafts.metalworking
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Default Clausing 5904

Joseph Gwinn wrote in
:

In article ,
Darkstar wrote:

Hi All
Just fired up a 5904 I bought last week and I am having trouble with
the variable speed. At speeds below about 1300 rpm, the speed control
slowly rotates until its going as slow as it can. Over 1300, it works
great. Anybody had this problem or know of a fix. Thanks


I think you have air in the hydraulic system. The fix is to bleed the
air out of the system. The instructions are in the manual (available
from Clausing for ~$25.00). You will need to get some hydraulic
fluid. Clausing recommends Mobil DTE24, which is available from MSC.

Joe Gwinn


Thanks Joe, I have the manual. I shall try it in the morning.
Best regards
Mike
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Old February 20th 08, 06:56 AM posted to rec.crafts.metalworking
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Default Clausing 5904

On Wed, 20 Feb 2008 03:37:58 GMT, Darkstar wrote:

Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks
Darkstar



A piece of coat hanger in a hook shape.

Shrug


Gunner
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Old February 20th 08, 07:43 AM posted to rec.crafts.metalworking
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Default Clausing 5904

Gunner wrote in
:

On Wed, 20 Feb 2008 03:37:58 GMT, Darkstar wrote:

Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks
Darkstar



A piece of coat hanger in a hook shape.

Shrug


Gunner


Sure that would work too I guess...but since I just got it, I'm being
critical of it's operation. By next year the coat hanger will probably do
just fine.
DS


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Old February 20th 08, 12:47 PM posted to rec.crafts.metalworking
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Default Clausing 5904

On Wed, 20 Feb 2008 07:43:48 GMT, Darkstar wrote:

Gunner wrote in
:

On Wed, 20 Feb 2008 03:37:58 GMT, Darkstar wrote:

Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks
Darkstar



A piece of coat hanger in a hook shape.

Shrug


Gunner


Sure that would work too I guess...but since I just got it, I'm being
critical of it's operation. By next year the coat hanger will probably do
just fine.
DS



My 8540 Clausing horizontal has the same problem and the coat hanger
is the temporary fix.

Gunner
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Old February 20th 08, 01:49 PM posted to rec.crafts.metalworking
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Default Clausing 5904

Gunner wrote:

My 8540 Clausing horizontal has the same problem and the coat hanger
is the temporary fix.


And the children of the shoemaker walk barefoot
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Old February 20th 08, 05:34 PM posted to rec.crafts.metalworking
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Default Clausing 5904

On Wed, 20 Feb 2008 08:49:33 -0500, Wes wrote:

Gunner wrote:

My 8540 Clausing horizontal has the same problem and the coat hanger
is the temporary fix.


And the children of the shoemaker walk barefoot



Sigh...indeed.

I played hooky all of last week, stayed home and fixed stuff, tossed
stuff, made stuff.

And put a tiny dent in the List. Tiny.

Gunner
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Old February 22nd 08, 04:21 AM posted to rec.crafts.metalworking
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Default Clausing 5904

Darkstar wrote:
Hi All
Just fired up a 5904 I bought last week and I am having trouble with the
variable speed. At speeds below about 1300 rpm, the speed control slowly
rotates until its going as slow as it can. Over 1300, it works great.
Anybody had this problem or know of a fix. Thanks
Darkstar


Usually. in my experience, air in the system caused a 'dead zone' or
play in that one would turn the speed dial a quarter turn or so before
the speed actually changed. The previous owner had put a needle valve
in the line at the output of the master cylinder allowing one to 'pump
up' the speed by moving the speed adjuster as far as it would go,
closing the needle valve, then retracting the speed dial, open the
valve, move the speed dial again, etc, sort of like pumping the brakes
on an old car. When the speed creeps back down its a pretty good sign
that the O rings in the master cylinder are shot, they are not hard to
replace. The afore mentioned needle valve would keep my 5904 at a
constant speed.
Hydraulic jack oil, from the auto parts store, in the pointy spouted
bottle was what I used to use in mine.

These are nice lathes but their downfall is the variable speed
mechanism, if its not leaky or air filled hydraulics its the plastic
sleeve bushings in the variable speed pulley halves. The clutch detent
can be problematic also. I finally tore all that stuff out and direct
belted a motor to the spindle, powered by a variable speed drive. It's
like a new machine and I spend more time turning parts and a whole lot
less time dicking around with drive mechanicals.

Regards
Paul


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