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Farmall & IHC Tractors Discussion Forum
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300u tach cable installation

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Jimer

03-18-2007 09:52:52




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I got the new tachometer cable for my 300u. My old one was entirely gone. The new one has a rubber grommet outside of the sheath, does anyone know where that should go? Also, one end of the cable itself has a small metal bushing type thing fastened to it, does this end go to the tachometer or the distributor?
Thanks for reading and any help is appreciated.
Jim




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JayWalt

03-18-2007 18:54:11




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 Re: 300u tach cable installation in reply to Jimer, 03-18-2007 09:52:52  
Jimer, the steel mount tabs should still be there. I cant recall off hand and its kinda late and shes tarped outside til i get my car out of the garage, but If I remember correctly, it goes below the oil filter, and upin front of the sediment bowl, then between the steering and the gas tank or something. If you're not after originality, just make sure theres no sharp turns, and anywhere should be fine as long as its supported and not rubbing anything. Wish I could be of mor ehelp, but I thought mine was routed a little odd in the first place.

I posted the pic in such large resolution so the words could be read. I fear If I make it smaller, when you print it it will be too pixelated to read. Save the pic to your Pc, then open it with Internet Explorer directly and try printing it from there.

If it doesnt work, let me know what size you want it and I can resize it for you.

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JayWalt

03-18-2007 11:05:30




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 Re: 300u tach cable installation Big Pic Included! in reply to Jimer, 03-18-2007 09:52:52  
Hi Jimer,

Glad to see you got the cable. The smaller metal threaded "cup" goes to the tach, the larger one goes to the distributor. While you are at it, I would recommend removing the drive gear, inspecting it and re-adjusting it. Best to clean it and relube it as well. Mine has some slop in it, but you have to buy the drive gear and housing if yours is toast. The drive mesh is adjusted by turning the scalloped housing which holds the cable off center. Mine goes all the way around and doesnt stop indicating my drive gear is like gone. The dot on the housing indicated either the furthest or closest mesh, cant recall, I just adjusted it so its the closest and it works. Hopefully your isnt that bad. I'm including page 63 of the manual that talks about the drive gear for you.
As for the grommet, I dont recall mine having one of those. All the holders for the cable are just curved pieces of steel bolted with existing bolts for holders. Installation should be fairly simple just note how you remove the old one. The tach portion can be a tight squeeze. Not sure if you need to remove the tach or not, as I removed mine to fix the lens and already had it out. Best way to see is diconnect the battery, and remove the dash part with the ignition on it. Might need lots of pentrating oil on them screws. They have nuts welded on the back, so its not just 1 thread to overcome if they are tight. After removing this part, let it hang from the wires, you'll need to remove the 2 screws holding the choke cable as well, then the bottom of the tach should be viewable. Getting a wrench in there to remove the 2 nuts holding the tch in requires a bit of experimentation to get it to fit. I remember getting a bit fedup with it, heh, hopefully you wont need to remove the tach. Hopes this helps!!

Sorry for the pic size, but I did this dilibertly so you could read it all
third party image

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Jimer

03-18-2007 15:17:26




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 Re: 300u tach cable installation Big Pic Included! in reply to JayWalt, 03-18-2007 11:05:30  
Jay, I appreciate your thoroughness in your response. But I have one question, how can I print that response so I have it in the garage with me. I'm afraid it is too big!



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Jimer

03-18-2007 16:24:02




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 Re: 300u tach cable installation Big Pic Included! in reply to Jimer, 03-18-2007 15:17:26  
I am a liar, more questions. My old tach cable is gone so I do not know where it is supposed to run. Does the cable run between the oil filter and the block? does it run in front, under or in back of the gas tank or in front, under or in back of the steering gear? Thanks again for all your help. Jim



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