6 Volt Starter Brushes

[robnara]

Hope there is someone out there that can help.
I have a 6 volt starter(5/8" shaft) and has died on me, so I have decided to rebuild the complete unit. Spares have been ordered and on my way.
So here's the problem: I took a series of photos when dismantling the starter for references, however I did not take a picture of the End Plate where the brushes are located(Silly me). So I do not know where each brush is supposed to be located. In the picture attached can someone inform me where the 2 Field Coil brushes go ? Are they opposite each other such as 1 and 3 or 4 and 2 or are they 1 and 2 or 2 and 3 etc ?

[Herb Concord Ca]

If you look closely at the end plate brush holders, you will see 2 are insulated and 2 are not. Line up the notch in the end plate with the notch in the starer housing and you will see where each brush goes. Remember the insulated brushes go in insulated brush holders.
BTY Harbor Freight sells a neat set of probes, one of which is great for pulling the spring out of the way while you install the brush.

[robnara]

Originally Posted by Herb Concord Ca

If you look closely at the end plate brush holders, you will see 2 are insulated and 2 are not. Line up the notch in the end plate with the notch in the starer housing and you will see where each brush goes. Remember the insulated brushes go in insulated brush holders.
BTY Harbor Freight sells a neat set of probes, one of which is great for pulling the spring out of the way while you install the brush.

I have just checked my end plate and all 4 brush holders are insulated. So where do I go from here please ?

[bbrocksr]

Field coil brushes go opposite each other in insulated holders, The other two brushes go to ground and do not need to be insulated. Are you sure all four holders are insulated from the end plate. I would verify with an Multimeter.
Bill

[robnara]

Originally Posted by bbrocksr

Field coil brushes go opposite each other in insulated holders, The other two brushes go to ground and do not need to be insulated. Are you sure all four holders are insulated from the end plate. I would verify with an Multimeter.
Bill

I've just checked with a multimeter as suggested and you are dead right. 2 of the brush holders when measured go to ground and the other 2 are insulated.
Reason I thought they were all insulated is that they all have insulating strips under the brush holders but on the other side of the end plate the 4 rivets that hold the Field Coil brush holders have insulating washers.
So now I know where all the brushes go thanks to you guys that responded.
Very much appreciated and thanks again. I'm a happy chappy.

[Big hammer]

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Make sure the brush spring pushes down dead center on the brushes, if needed you can tweak the spring posts

[rotorwrench]

The ground brushes connect to the outer case with flush head screws that are placed 180 degrees from each other on most starters I've worked on. The other two are the power brushes that connect to the fields and they also are mounted 180 degrees from each other and 90 degrees from each ground brush. They have to be oriented where they will fit the back end plate holders when the end plate it fitting in its proper clock position per the notch.

There has to be access to the brushes through the windows on the case so they can be removed and installed with the back plate on. I use a little hook tool to pull the springs up out of the way and remove or install the brush in its holder. I take care not to damage the insulation on older power brushes in this process. The ground brushes have no insulation and are just bare copper wires.

Soldering new power brushes takes a proper size soldering iron with a steady hand to solder them to the fields. There is another tip on soldering these in the Model A Ford Garage starter & clutch section of that web site.

[robnara]

Originally Posted by Big hammer

Make sure the brush spring pushes down dead center on the brushes, if needed you can tweak the spring posts

I will take note of that. Cheers !

[robnara]

Originally Posted by rotorwrench

The ground brushes connect to the outer case with flush head screws that are placed 180 degrees from each other on most starters I've worked on. The other two are the power brushes that connect to the fields and they also are mounted 180 degrees from each other and 90 degrees from each ground brush. They have to be oriented where they will fit the back end plate holders when the end plate it fitting in its proper clock position per the notch.

There has to be access to the brushes through the windows on the case so they can be removed and installed with the back plate on. I use a little hook tool to pull the springs up out of the way and remove or install the brush in its holder. I take care not to damage the insulation on older power brushes in this process. The ground brushes have no insulation and are just bare copper wires.

Soldering new power brushes takes a proper size soldering iron with a steady hand to solder them to the fields. There is another tip on soldering these in the Model A Ford Garage starter & clutch section of that web site.

Thank you for your suggestions, it is most helpful. Cheers !