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Allis Chalmers B112 points


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#1 Jwaldrop OFFLINE  

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Posted April 03, 2016 - 07:17 PM

I have an Allis Chalmers B112. It seems like the device that pushes the points to open and close doesn't move very much. Do you think it's that "pusher" or something inside the engine?
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#2 petrj6 OFFLINE  

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Posted April 03, 2016 - 07:28 PM

   Not sure what the question is here, the plunger doesn't move very much at all.  keep in mind the points only open .020 or thereabouts and that's all it needs to move.  are you having trouble getting spark ?

                                                                    Pete



#3 Bolens 1000 ONLINE  

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Posted April 03, 2016 - 07:28 PM

I'm unfamiliar with the series engine used in that tractor but sometimes the push rods will wear out. Some were metal and others were fiber.



#4 Jwaldrop OFFLINE  

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Posted April 04, 2016 - 07:23 AM

The engine is a Briggs & Stratton 300421. I'm not getting spark.
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#5 Bolens 1000 ONLINE  

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Posted April 04, 2016 - 08:35 AM

First thing check to see if you have a good clean contact set , if oxidized or pitted they will not give a strong spark, also check for any grounding issues, try checking for spark with the points cover off and see if perhaps a loose wire is grounding out at the box, check your flywheel magnets for a strong pull and sand them down if they are rusty. Set your points gap and make sure the contacts are opening and closing at .020 , If the points are not opening and closing as they should the plunger may be the culprit, other than that a cheap first step is just replacing the points and condenser if you tried the things above and still no spark


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#6 Jwaldrop OFFLINE  

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Posted April 14, 2016 - 04:55 PM

Thanks




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