Mill/drill return spring

[michael coleParticipant @michaelcole91146]

After telling the world how good my Chester lux mill is, the quill return spring has now broken at the end point where it slots over the screw head that holds it.

If not clear I mean the coil spring mounted in the circular bell item on the side of the head. Has anybody else had to replace this spring. I don’t want to lose a finger as it fights lose as I try to replace it in its little bowl, What is the best ( safe) way to replace this spring?

 

thanks

Mike

[michael coleParticipant @michaelcole91146]

[IVATTLMSParticipant @ivattlms]

where did you get the spring and what size is it as i need one for an old warco mill/drill

[methusalaParticipant @methusala]

Hi, I am not familiar with the chester mill, so I don’t know how much room you have

around your spring. If there is plenty of room you could try placing thick washers

in the coils to lengthen the spring until it slips onto the post.

This is an old dodge and I hope it is of use to you.

 

Colin.

[Martin KyteParticipant @martinkyte99762]

The normal way these work is that the housing is attached to a boss by a grub screw. Releasing the screw will enable the housing to turn. The spring is fitted untensioned. Preload is applied by rotating the housing and then tightening the grub screw.

Martin

[michael coleParticipant @michaelcole91146]

The srping is a flat coil and i am trying to get it to fit inside the housing before fitting to the mill. It was just the end about 1 inch that broke so i drilled a new slot , so sorry Ivattlms i am reusing the old spring. Have you tried all the different machine dealers?

 

Mike

[JonParticipant @jon]

Michael i done mine a few months back having stripped the gearbox out.

 

Outer lip fit that to chrome cover.

Pull out the inner and attach the screw on to shaft.

Line the assembly up on shaft and insert the thumb screw a few revs in.

Pull out the assembly and rotate, thinks it anti clockwise. There are indents/castellations to align up, then tension centre screw before trying.

 

[adyParticipant @ady]

around your spring. If there is plenty of room you could try placing thick washers

in the coils to lengthen the spring until it slips onto the post

 

If there is sufficient room a ball joint breaker would extend your spring

The general design might give you some ideas too

The bottom bit is a fork, so with a fork on the top and bottom…etc

 

[adyParticipant @ady]

There ya go.

A spring extender

 

[michael coleParticipant @michaelcole91146]

Thanks Jon and others.Spring is now back on.That is one strong spring. Method used attached center of spring to shalf then pull spring tight and rotate to form coil. Repeat until coil is just bigger than cover, fit outer end of coil to slot in cover fit thumb screw and tension. I needed a very strong grip , that was not a job i want to repeat .

 

Mike

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