What is it?

[silverhawk]

On a recent visit with my dad, he produced this "thing", and said it came from his uncles tool boxes. He was curious, and I could not show an expertise (my first guess was a turn signal indicator lever from an older car, but the inside button thing has me a bit baffled).

It is a long and slender shaft with a sharp point on one end (with a groove, likely to keep it in place), and a bell-shaped end on the other. That end has a round knob on the inside that feels like a spring is involved.

Does anyone have any clue what this might be to? I don't think this is an actual tool, but I've been known to be horribly wrong.

Joe

 

[brino]

My first thought was a record player spindle with the point to find the centre hole easier...... but the grooved shoulder on those wasn't concentric, so you could put a stack of 33rpm vinyl and have it drop the next in the pile and didn't have to get up to start the next record.

Is the bell-shaped knob fixed to the shaft?
My other thought was a small centre punch if that back end could be pulled out and then released for a little percussive snap.

Brian

 

[silverhawk]

My first thought was a record player spindle with the point to find the centre hole easier...... but the grooved shoulder on those wasn't concentric, so you could put a stack of 33rpm vinyl and have it drop the next in the pile and didn't have to get up to start the next record.

Is the bell-shaped knob fixed to the shaft?
My other thought was a small centre punch if that back end could be pulled out and then released for a little percussive snap.

Brian

I could not twist if off easily (doesn't say much, really), not did I find a cross pin holding the two pieces together.

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[terry_g]

That is an injector plunger out of a Cummins B type injector or flanged injector. It was used in the H-180 up to the NTC-335.

 

[silverhawk]

These uncles worked on any machinery they had, so I am not surprised to hear diesel engines mentioned as the source.

I am also not surprised to have it identified this quickly.

But I am in awe of the collective expertise that resides in the group. Just, wow.

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[terry_g]

I have a dozen of those plungers with the end cap removed. I ground then into a scriber and an assortment of chisels and cape chisels. They are really good quality steel.

 

[RJSakowski]

These uncles worked on any machinery they had, so I am not surprised to hear diesel engines mentioned as the source.

I am also not surprised to have it identified this quickly.

But I am in awe of the collective expertise that resides in the group. Just, wow.

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I would guess that if we combined the years of experience of the members of this group, it would exceed a million.

 

[terry_g]

Most diesel engines have a thick wear sleeve on both ends of the crankshaft. Some can be a challenge to remove with the seal housing in place. I ground some of the Cummins injector plungers into small cape chisels and I would use one to cut a groove across the wear sleeve, carefully cutting the groove deeper until the sleeve would snap then slide it off the end of the shaft with an O-ring pick.

There are a couple centre punches in there as well.