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GBACBFan 
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 Topic: B 125 Power Unit Question...
Posted: 13 Oct 2011 at 3:53pm |
I have a few of these little buggers, both with an without a starter hole in the bell housing. I had an extra housing with a hole and a tractor flywheel, so I replaced the ring gear, and installed the bell housing with the starter hole to make the conversion on one of my crank start units. Everything went well, but I used a tractor starter, and there is no relief hole in the starter housing to line up with the starter hold down bolt in the PU bell housing.
Should I drill a relief hole/dimple in the starter for the pointed starter tightening bolt to go into to secure the starter? I'm thinkin' I should, but I'd like to confirm my thinking.
Any and all help is appreciated.
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Chalmersbob
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Posted: 13 Oct 2011 at 9:30pm |
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If you used a tractor starter, what tractor is it from? The B, C and CA starters all have the locking hole in them. The hole for the tapered bolt is the only way to keep the starter in place, so if it's not there, then I guess it's best to drill one. Bob
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Bob(W-Md)
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Posted: 14 Oct 2011 at 10:01am |
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The B power-unit starter I have has a hole that looks like its NOT factory drilled but tapered inward.It also is stamped on that snout B PU.I tried once to put it on a B tractor and the starter switch was in the wrong possition for the starter rod.I don't know if the snout could be turned to acomadate that position,but I do remember I couldn't use it on the tractor.So I rebuilt the tractor starter.
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Dick L
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Posted: 14 Oct 2011 at 12:12pm |
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The CA starter switch is on top as does the later B's after the CA begain. They had a pull rod up by the throttle rather than the pig tail heal kick rod.
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GBACBFan
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Posted: 14 Oct 2011 at 7:02pm |
ChalmersBob, the starter is off of a B, and it has the locking hole in the right place for the tractor but not in the right position for the PU. (The PU bellhousing screw is in a different place) You guys are correct, the tractor starter has the switch is in the wrong position, and that would be a problem using the PU starter on a tractor. I don't care about the position on the starter switch installed on the PU. I doubt I'll ever find a PU starter, so I'm inclined to drill a relief hole in this tractor starter to try it. I'll report back on how I make out.
Good information, thanks for the insight.
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GBACBFan
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Posted: 14 Oct 2011 at 8:35pm |
As you can see from this pic, the tractor starter on the PU has the terminal at 4 o'clock from the rear, and the "hold bolt" on the PU is at 9 o'clock. Do I need to drill a recess in the tractor starter for the "hold bolt" if I use it on this PU? Am I missing something here?
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Edited by GBACBFan - 14 Oct 2011 at 8:37pm
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Chalmersbob
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Posted: 14 Oct 2011 at 9:00pm |
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Take the srarter apart and turn it 1/2 turn and the terminal will be at the 10 o clock position. Bob
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GBACBFan
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Posted: 15 Oct 2011 at 7:52am |
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That's a good thought to get the terminal at the top, Bob, thank you. I think I'll still need to drill the recess hole in the starter for the PU position of the set screw. I guess that's not the worst thing in the world.
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"The trouble with quotes on the Internet is that you can never know if they
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Bob(W-Md)
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Posted: 15 Oct 2011 at 7:17pm |
Here is the B Power Unit starter. Note the hole is kind of oblonged not looking factory,  but it tapers inward to accept the pointed set screw.
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Chris/CT
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Posted: 15 Oct 2011 at 7:26pm |
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I recognize that bellhousing, glad it may getting some use!
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Chalmersbob
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Posted: 15 Oct 2011 at 8:30pm |
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If you look at a starter on the early B, with the switch on the bottom, the switch is 1/4 turn from the screw which is on the right side. Your power unit has the screw on the left side so if you install a B starter the switch would be at the top, not where your is, which is 1/2 way around from the bolt. Ihad that same power unit and installed a B starter with no issues. Bob
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GBACBFan
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Posted: 15 Oct 2011 at 9:33pm |
Bob(W-Md) Thanks for the PU starter pic. That helps me understand.
Chris, you are correct, you should recognize that piece. It even has your weight marking written on the side!
Chalmersbob, You are exactly right in what your saying as far as orientation. I've been trying to keep the starter nose cone shroud directly opposite the ring gear as in Bob(W-Md)'s pic, and that's what's throwing me off. That part of the orientation is different on a tractor vs the PU.
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Chalmersbob
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Posted: 15 Oct 2011 at 9:40pm |
You are correct. I don't remember drilling a hole in the nose cone to get it to align with the ring gear. I guess that is your only choice to get it right. Bob
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MNLonnie
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Posted: 15 Oct 2011 at 9:49pm |
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Larry your PM inbox is full.
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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 6 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker
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