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Starter Motor Refurbishment


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#1 JonnyAlpha

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Posted 27 November 2019 - 07:43 PM

Hi;

 

I have a surplus Inertia Starter from a Metro 1275 Engine that I am reconditioning. It's a Lucas but not sure of the part number.

I need to get a new internal gasket for it for starters :-) and how on earth do you undo the screws holding on the internal magnets? 

The reason I want to strip it is to soak the casing in citric acid to de-rust it before painting.

 

Any idea who sells parts for these old fellas?

 

Tks

 

mHhQizE.jpg



#2 DeadSquare

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Posted 27 November 2019 - 08:22 PM

Hi;

 

I have a surplus Inertia Starter from a Metro 1275 Engine that I am reconditioning. It's a Lucas but not sure of the part number.

I need to get a new internal gasket for it for starters :-) and how on earth do you undo the screws holding on the internal magnets? 

The reason I want to strip it is to soak the casing in citric acid to de-rust it before painting.

 

Any idea who sells parts for these old fellas?

 

Tks

 

mHhQizE.jpg

 

Do not continue trying to undo the screws that hold the field coils.  They are not intended to be loosened.

 

Clean the exterior oxide with a wire brush.



#3 sonscar

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Posted 28 November 2019 - 09:27 AM

A special tool is used,Iforget exactly but it is something like a "pole setting screwdriver"I once saw a picture.Steve..



#4 JonnyAlpha

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Posted 28 November 2019 - 06:55 PM

 

Hi;

 

I have a surplus Inertia Starter from a Metro 1275 Engine that I am reconditioning. It's a Lucas but not sure of the part number.

I need to get a new internal gasket for it for starters :-) and how on earth do you undo the screws holding on the internal magnets? 

The reason I want to strip it is to soak the casing in citric acid to de-rust it before painting.

 

Any idea who sells parts for these old fellas?

 

Tks

 

 

 

Do not continue trying to undo the screws that hold the field coils.  They are not intended to be loosened.

 

Clean the exterior oxide with a wire brush.

 

 

So just wire brush or Soda Blast clean then.

 

What about spares? E.G. the gasket on the back plate?



#5 DeadSquare

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Posted 28 November 2019 - 07:18 PM

 

 

Hi;

 

I have a surplus Inertia Starter from a Metro 1275 Engine that I am reconditioning. It's a Lucas but not sure of the part number.

I need to get a new internal gasket for it for starters :-) and how on earth do you undo the screws holding on the internal magnets? 

The reason I want to strip it is to soak the casing in citric acid to de-rust it before painting.

 

Any idea who sells parts for these old fellas?

 

Tks

 

 

 

Do not continue trying to undo the screws that hold the field coils.  They are not intended to be loosened.

 

Clean the exterior oxide with a wire brush.

 

 

So just wire brush or Soda Blast clean then.

 

What about spares? E.G. the gasket on the back plate?

 

 

I'm getting old, I don't recall a gasket.

 

If you have the old one, can you cut your self a replacement ?



#6 JonnyAlpha

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Posted 28 November 2019 - 08:03 PM

 

 

 

Hi;

 

I have a surplus Inertia Starter from a Metro 1275 Engine that I am reconditioning. It's a Lucas but not sure of the part number.

I need to get a new internal gasket for it for starters :-) and how on earth do you undo the screws holding on the internal magnets? 

The reason I want to strip it is to soak the casing in citric acid to de-rust it before painting.

 

Any idea who sells parts for these old fellas?

 

Tks

 

 

 

Do not continue trying to undo the screws that hold the field coils.  They are not intended to be loosened.

 

Clean the exterior oxide with a wire brush.

 

 

So just wire brush or Soda Blast clean then.

 

What about spares? E.G. the gasket on the back plate?

 

 

I'm getting old, I don't recall a gasket.

 

If you have the old one, can you cut your self a replacement ?

 

 

You can see the remnants of it around the inside of the base plate. V difficult to re-manufacture?

 

bPuQwq7.jpg



#7 weef

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Posted 28 November 2019 - 08:17 PM

Lucas made a special tool to undo these screws. I have only ever seen one as it was not an operation we used to do when refurbishing the dynamo. If it needed stripping that bad it was replaced on an exchange basis and the old unit sent back to the manufacturers, so not many workshops had one of these tools.

If you really want to strip it back I would suggest using a pillar drill with a large phillips bit with a rod welded onto the side of it to form a "T".  Fit this into the chuck and with the dynamo body fitted into the machine vice line up the screw head with the bit. Exerting a downward force, as if drilling a hole, this locks the phillips bit firmly in the screw head and by using the "T" bar turn the screw out. From memory they are a might tight so  this is why constant downward pressure is required to stop the screwdriver bit riding out and damaging the screw head.

Reverse this procedure to tighten the screw when you assemble the unit.



#8 DeadSquare

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Posted 28 November 2019 - 08:24 PM

I see what you mean, but it is probably worth a couple of attempts.



#9 weef

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Posted 28 November 2019 - 08:31 PM

If you have the "kit" to hand and can weld up a suitable bit I see no reason why it should not work. Not difficult to make and its a nice engineering exercise.



#10 sonscar

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Posted 29 November 2019 - 10:06 AM

Googlr "pole setting tool"it's pretty similar to what Weef suggested.Steve..






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