I tore apart my 203 to make a doubler about a year ago. Everything is finally done and ready to go back together. I was looking at some old mag articles on doublers and in one they said to make sure you reinstall the locating pin when putting a 203 back together. It looks like that locating pin is located on the mainshaft just to the rear of the clip that holds the mainshaft in place and after the shaft necks down to it's final diameter. The hole for the pin is about 1/16 of an inch in diameter. The pin is long gone, I don't know if I pulled it out or what the fawk happened to it. I don't ever remember seeing it. Well anyway what does it locate? From looking at it the whole deal I can't figure what it ever did, or would do now. Can I live without it, or more importantly can my doubler live without it? If my discription of this thing doesn't make sense, i could Email a pic to show it more clearly. Stupid newbie here is better with a wrench and hammer than posting pics.

Mostly the locating 'pin' is used for keeping the thrust washer from spinning on the mainshaft (with helical cut gears there is always a sideways thrust on the gear , also the mainshaft and low range gears spin at different speeds when the unit is in high range)

Mostly the little pin can be subbed for a roller from a needle bearing.....a wee chunk of welding rod... whatever you have at hand...

When needing a precise dowel for something I have lost, misplaced, destoyed, or which flew across the shop after I released a spring, I like to chop up old cheap drill bits - the shanks are usu. pretty precise dimensions.

I had a similar situation.

While rebuilding my early GM NV4500 (almost done), there was one thrust washer locating pin that was missing....wasn't there from the factory I guess (it has three total, all the same size).

So I miked the others and they were 1/8" diameter x 1/4" long.

GM dealer wanted $12 each with a minimum quantity of five. Fawk that.

I found a box of 100 (1/8" dia. x 3/8" long though) cheap from an industrial supply place.

So, in short, I have 99 extra....lol. if 1/8" diameter will work for you, you are welcome to have one, just email me your address and I'll mail you one (maybe even two) :D

Charly

When needing a precise dowel for something I have lost, misplaced, destoyed, or which flew across the shop after I released a spring, I like to chop up old cheap drill bits - the shanks are usu. pretty precise dimensions.

lost mine too, good idea..

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