08-24-2011, 09:47 AM | #1 |
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Location: Grand Rapids Mi
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Starter spring
I broke a starter spring and would like to know the right way to install a new one. I have the drive on the starter shaft and one side of the new spring bolted to it. I put the key on the shaft and slid the small piece on the shaft and onto the key. Now I need to rotate the small piece to attach the other end of the spring but which way do I go? Do I wind the spring tighter or go the other way ? Thanks JB
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08-24-2011, 02:38 PM | #2 |
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Location: Scarborough, Yorkshire
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Re: Starter spring
I recently had to repair my original style starter Bendix. The spring did not need to be twisted either way to tighten it up or slacken it. I think it would be extremely difficult to crank another full turn into the spring! With the head end installed on the key, the bolt holes and spring ends should line up.
You may find the link below of interest - http://www.fordbarn.com/forum/showth...ghlight=Bendix |
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08-24-2011, 06:41 PM | #3 |
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Re: Starter spring
That is what I thought too, but it has been 35 years since I have replaced one. This one had a broken spring and the two holes are definetley are 90 degrees from lining up. The broken spring was a model a spring with the two eyes in line. I don't get it ?????? JB
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08-24-2011, 07:55 PM | #4 |
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Re: Starter spring
The drive head is keyed to the armature and the starter pinion isn't, so it can rotate to line up the 2 bolts, one on each end of the spring.
If you look at the spring for the Model A, it will have a spiral like that of a LEFT HAND screw, not to be confused with other springs with a right hand spiral. |
08-24-2011, 08:09 PM | #5 |
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Re: Starter spring
Throw the original one away and get one of the new aftermarket tractor ones. Cheap insurance.
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08-25-2011, 08:05 AM | #6 |
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Re: Starter spring
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Last edited by John LaVoy; 08-25-2011 at 08:58 AM. Reason: adding picture |
08-25-2011, 09:29 AM | #7 | |
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Re: Starter spring
Quote:
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08-25-2011, 10:23 AM | #8 | |
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Re: Starter spring
Quote:
Makes sense to me, I'm looking at the Ford Service Bulletin, and it appears they were installed on top of the spring as I did it. Do you have something that shows it differently? |
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08-25-2011, 10:55 AM | #9 |
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Re: Starter spring
John, Page 571 in the SERVICE BULLETINS, plus a couple of original drives I worked on a few years ago.
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08-25-2011, 11:23 AM | #10 |
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Re: Starter spring
I recently installed these clips and I'm sure Tom is right. I can't quite make out what is happening on the right side of the picture but the lower bolt (close to the pinion gear) has to be wrong.
The clips 'clip' onto the shaft and head with the clip holes and shaft bolt holes aligned. The spring slides over the clips and you can then see that the built up thickness of the clip reduces the twist of the spring when it is 'torqued'. I'm hoping that this will reduce the likelihood of the securing bolts loosening or stripping their threads. (5/16 " bolts with 5/16 spring and 3/8" bolts, 30 - 31, with 3/8" spring). |
08-25-2011, 11:31 AM | #11 |
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Re: Starter spring
Sorry - forgot that I took some photos, the clip shows on this one.
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08-25-2011, 12:12 PM | #12 | |
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Re: Starter spring
Quote:
So this is the way they are installed? John |
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08-25-2011, 12:20 PM | #13 |
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Re: Starter spring
Yes, I like to push the clip in as I tighten the bolts, otherwise the clip barely fits under the first coil.
Later springs had the coil on each end turned to a bit smaller diameter, so the clips weren't used on them. |
08-25-2011, 12:55 PM | #14 |
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Re: Starter spring
I found my original clip and see the wear indicating how it fits. It is even marked Bendix. Thanks for pointing that out, the service bulletin picture is a little deceiving.
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