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  #81  
Old 06-07-2014, 04:40 PM
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johncub7172 johncub7172 is offline
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Well, if you believe it is the Delco starter generator, for a field test...remove the s/g belt from the belt pulley and wrap a rope around the belt pulley, turn the ignition key "on", and give it a serious pull. The tractor should bust off and run good like no body's business,......... { if only the s/g is faulty} . I can't tell you how many garden tractor's I have started like this, for about 28 years.

Nice weather we're having today
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  #82  
Old 06-07-2014, 05:05 PM
Gfann Gfann is offline
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Default The Armature
Here is the Starter Armature, I had another S/G I took apart to compare the two. So what are our thoughts on this? I notice the Cub s/g looks a tad Burned.
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File Type: jpg IMG_5775.jpg (36.3 KB, 100 views)
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  #83  
Old 06-07-2014, 05:18 PM
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Alvy Alvy is offline
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Greg do you have any pictures of the armature where the brushes ride? Also do you have a multimeter? You can do resistance checks on the start and charge coils, but it's kinda hard to determine a shorted armature by looking at it. Is the other s/g from a cub?
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  #84  
Old 06-07-2014, 05:42 PM
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Check the bushings. Worn bushings will let the armature "drag" on the fields. Only takes a little to ruin your day. Any scuffing showing? I can't tell for sure from the Pic.
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  #85  
Old 06-07-2014, 07:32 PM
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I have read through this a couple times and I'm back at the ACR. I didn't see any verbage about you actually witnessing the exhaust valve popping up just a little bit on the compression stroke. If you saw that then ignore this post. One thing that comes to mind is the tab that creates the valve to pop up. I have seen them broken off which renders the ACR useless. Before a certain serial # engine I think they can be adjusted with a screwdriver by prying them up a little. Don"t know if I would go there. The bakelite on the armature looks a little toasted. Myself I would take it to an auto electric shop and have it gone through.
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  #86  
Old 06-07-2014, 07:56 PM
Gfann Gfann is offline
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Default More pictures
Here are more pictures of the armature and brushes
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  #87  
Old 06-07-2014, 08:12 PM
Gfann Gfann is offline
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Quote:
Originally Posted by cubs-n-bxrs View Post
I have read through this a couple times and I'm back at the ACR. I didn't see any verbage about you actually witnessing the exhaust valve popping up just a little bit on the compression stroke. If you saw that then ignore this post. One thing that comes to mind is the tab that creates the valve to pop up. I have seen them broken off which renders the ACR useless. Before a certain serial # engine I think they can be adjusted with a screwdriver by prying them up a little. Don"t know if I would go there. The bakelite on the armature looks a little toasted. Myself I would take it to an auto electric shop and have it gone through.
I had another Starter that I put on, to see how it did. I still got the same problem. I didn't have the breather cover off to see the valves when I looking at the ACR cover. Tomorrow I'll have to check that while I turn it. I think I understand the ACR set up. I couldn't really understand it until I saw how everything interacted together. I couldn't see the tab. I'll have to try and spot that tomorrow. I'm wondering if that wasn't/is the main issue. I think the starter might be burned up now though. The "bakelite" as you mentioned do look burned up.

The other starter isn't frame a cub, it was off a old Jacobson I believe.
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  #88  
Old 06-07-2014, 11:20 PM
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After reading through this whole thread, I'm thinking you may want to get someone to take a look at what is going on to see if they may be able to guide you along with this project.
Everyone has givin' their all here to try and solve the trouble with the tractor. I myself think your just chasing one thing after another without getting anything accomplished.
Your thinking it may be the ARC, then the S.G. YOU should get one problem isolated and fixed then move onto another if need be.
Good luck with you adventure.
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  #89  
Old 06-08-2014, 12:15 AM
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Any of the two regulators on the voltage regulator the cause for the s/g to drag-start?
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  #90  
Old 06-08-2014, 07:44 AM
Darrell Darrell is offline
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I brought home a 149 with the same problem , slow turning over. Put on a known good S/G , new VR , cleaned the grounds , anything else i could think of , and still the same problem. Retimed it , still no help.

My battery charger has a 24 volt setting on it , hooked it to the 149 battery and it really took off and started with ease !!!!!! I think i am going to start hooking myself to it in the mornings !!!


I haven't checked the exhaust valve yet , but i have a feeling it is the ACR.
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