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Farmall & IHC Tractors Discussion Forum
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SH distributor

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aaachris

12-17-2007 08:14:21




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Hi All
I need to rebuild the battery ignition distributor for my SH. Is there a kit out there that would include all the parts I would need? I see in the parts section of this website that they do sell a new shaft. Is that usuaully all that required? There is a good deal of play in the shaft that that the rotor attaches to and you can see the points moving as you wiggle the shaft.
Thanks

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aaachris

12-18-2007 09:52:26




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 Re: SH distributor in reply to aaachris, 12-17-2007 08:14:21  
Thanks for the help, guys. I looked at the parts breakdown in the IT manual but it didnt show the bushings.
I am going to buy a used distributor off ebay then swap it out for the one on my tractor cause I cant have downtime now. I need the tractor for snow removal. Ill rebuild the original then swap them back and resell the used one.



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karl f

12-18-2007 15:47:50




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 Re: SH distributor in reply to aaachris, 12-18-2007 09:52:26  
better idea: rebuild them both--in stages--so you don't have down time, but then you can sell a rebuilt one for a profit (hopefully).

karl f



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Andy Motteberg

12-17-2007 21:54:21




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 Re: SH distributor in reply to aaachris, 12-17-2007 08:14:21  
To do a good rebuild job, You should get these new parts:

Cap
Rotor
Dust cap
Points
Condenser
Bushings
Drive Shaft
Coil & Bracket
Coil Wires & Spark plug wires



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D Slater

12-17-2007 10:38:43




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 Re: SH distributor in reply to aaachris, 12-17-2007 08:14:21  
If the movement is clockwise and counter clockwise it may be normal, little to no side to side play would be good. I think the shaft listed on this site isn't the one you need for the distributor which I call the rotor shaft. Its not hard to check your unit before deciding what to do. After removing unit at the 2 clamp bolts( note engine and dist position for reinstalling) remove everything down including points. Remove stud with insulator that points and coil wire attaches to. Remove the 2 screws that cap clips are attached to and 1 other screw half way between those 2. lift out point mounting plate. Next there's a weight guard a thin formed metal piece with 2 screws to remove. Warning if screws to long for condenser or point contact mounting were installed or installed in future they will wear metal deform or junk this guard. Remove 2 advance springs and lift out the cam piece. There can be play between it and rotor shaft,check. If not missing there would be a felt in the hollow cam shaft, its suposed to be oiled every so often. Lot don't get lubed.Now you can check the rotor shaft to dist. housing play. To remove rotor shaft from housing the gear on end of shaft has a pin to remove, then shaft can be removed to determine what needs repaired. Thin thrust washers are located at top and bottom of shaft. O ring seal is in drive end of housing. Common problems, weight pins loose on rotor, weight holes elongated, advance hole worn oversize. Not as common, gear wear or loose where pined to shaft, cam lobes bad.After repairs don't forget to grease where plug is in dist housing once in a while. May have forgot something, if needed ask.

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RustyFarmall

12-17-2007 08:29:50




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 Re: SH distributor in reply to aaachris, 12-17-2007 08:14:21  
Most likely you will need new bushings as well as the new shaft, and those bushings will need to be reamed to the proper size after being pressed in. Get the new shaft if you want, but then take the shaft and the distributor housing to a qualified machine shop.



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