Puller to remove central stem from front plate.

[tickytocky]

I need to know what the puller that is used to remove the central arbor (that holds the hands) from the front plate is called and looks like. The long stem /arbor that has a gear on it on each side of the plate and with some clocks doesn't simply allow itself to be removed because all is pressed together and there is a gear on both sides of the plate. I need to remove this stem to repair the plate. Does someone know how to remove this stem and replace it later again? I would love to get photos of what this puller looks like, what it's name is and/or a source to buy one from.
Thank you!

 

[wow]

You can break it loose using two paint can openers on opposite sides, prying up carefully. Once it moves, you can usually screw the hand nut on the end of the arbor and tap the end with a rubber or plastic head hammer and the arbor will move through the gear. I know of no puller that will work on a long arbor like that. In most cases I do not remove that arbor. Is the plate in really bad shape? Photos?

 

[David S]

Here is a home made puller that I use.

Use these to get the pinion up off the plate.
squeeze them with pliers.
all the parts

David

 

[f.webster]

Very cool tool!

Question: Did you drill the center bolt?

 

[David S]

Yes I did. However you can purchase electrical nipples that are almost the same size, which already have a hole down the centre.


David

 

[howtorepairpendulumclocks]

Here is an alternative way of doing it... fast forward to the 40 minute mark in this video

 

[Altashot]

My method is similar to the one shown by Howtorepair above, except I don’t tap the arbour out, I push it trough.



M.

 

[daveR]

I like that method of how to repair also especially where it comes to replacing the pinion. With just about any other method replacing the pinion runs the risk of damage or pushing out a bushing. I was only ever originally shown a pry bar method.
I wonder howtorepair, doyou find much variation in arborsizes, ie how many old key pushers do find you need ?
David

 

[howtorepairpendulumclocks]

Arbor press looks good. More control if you have access to that tool. Yes my aim is to minimise damage.
I'm only concentrating on smith enfield clock at the moment so they are pretty standard at 2mm A/F. I imagine though if you buy/make a pusher with a square hole every time you encounter a different size, in 0.25mm steps, you will soon build a small collection to approach all similar projects. Yes, there is an alternative of using a hollow punch (I use a drilled-out drum stick), but as you say, if that hole is bushed, the bush may be pushed out.

 

[tickytocky]

Thanks ... all of you! This has given me just what I needed. I was sort of thinking that it would be some tool that you can't buy... and I was correct. It will work for me. I can make one too. And the reason why I need to remove the arbor? You know, on the front of the plate, the small/short shaft one of the gears that move the hands is on? With the small split-ring holding the gear in place? That shaft is cocked to the side and the gear rubs on the plate. And the back of that shaft is peened over on the other side of the plate, but with the center arbor and gear in place... you can't peen it tight again. You need to remove the arbor to get the shaft peened tight. Good reason... thanks! All of you!!!

 

[shutterbug]

One of the best tools for removing the pinion is a small butane torch. A little heat applied directly to the pinion makes it relax its grip considerably

 

[Old Rivers]

Here is a home made puller that I use.
View attachment 635474 View attachment 635475
Use these to get the pinion up off the plate.
View attachment 635476 squeeze them with pliers.
View attachment 635477 all the parts View attachment 635478

David

David,

Very cool, nice job!
What's the thread size?
Looks like you used aluminum flat bar, what dimensions?
Is that steel square tubing?

If you wouldn't mind posting a photo of your assembly next to a ruler it would be appreciated!

Bill

 

[tickytocky]

One of the best tools for removing the pinion is a small butane torch. A little heat applied directly to the pinion makes it relax its grip considerably

Good idea... if you are cautious

 

[David S]

Bill,
The main frame is made from 0.100" x 0.7" x 7.0" aluminum bent to form a 3" overall length.
The threaded rod is just some 5/16" fine all thread that I had. The entire unit is 4" total length.
The square steel piece that grabs the pinion is indeed steel tubing.

David

 

[Old Rivers]

Bill,
The main frame is made from 0.100" x 0.7" x 7.0" aluminum bent to form a 3" overall length.
The threaded rod is just some 5/16" fine all thread that I had. The entire unit is 4" total length.
The square steel piece that grabs the pinion is indeed steel tubing.

David

Thanks David!

Bill