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Ford Tractors Discussion Forum
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Need an opinion from my tractor bretheren

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Dave H (NY)

12-01-2004 07:15:00




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While I had the 850 apart for a new clutch, I changed the ring gear, starter and starter bendix, periodicaly the starter whines but does not crank the motor, I have to hit the button two or three times then it engages the right way,my question is since everything is new should I suspect the starter or the bendix drive? Thanks Dave




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MarkB_MI

12-02-2004 16:45:09




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
Dave,

Did you get the ring gear all the way on to the flywheel? It should be up tight against the shoulder of the flywheel; otherwise you'll have problems with the starter engaging.



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sotxbill

12-02-2004 07:44:10




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
first off that model starter was notorious for bounce back off of the ring gear... make sure you keep the shaft lubricated well with white lube or a grease that will stay put and not harden.....

but the best plan would be to upgrade to the two-stage starters sold on ebay.. the modern design means that they will engage and stay engaged till you release the starter switch... they spin faster,, and thus start quicker and especially save the ring gear and battery wear...

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Dave H (NY)

12-02-2004 15:45:26




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 Re: Need an opinion from my tractor bretheren in reply to sotxbill, 12-02-2004 07:44:10  
Thanks for the input guys, this starter was only one week old, it was a rebuilt unit from New Holland and was bad. I exchanged it today for another and all is working fine.



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Dave H (NY)

12-01-2004 15:01:56




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
Thanks guys, I am leaning towards the bendix, all of the parts are only a few hours old as I just put the tractor back together yesterday after the clutch job and while it was apart I figured I would change the tired ring gear and since the ring gear was new why not the starter and benbix. The solenoid is only a year old and has not given me any trouble. The old starter which was actually so loose it would rattle internally when cranking always engaged, like everything else in time I will get it figured out. Thanks for the input. Dave

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Fighting suburbia in NC

12-01-2004 14:30:48




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
Sounds like the bendix is hanging and not pushing out and contacting the ring. As kraigWY pointed out, if the armature bushings are worn on either end it may be misaligned just enough to hang up and cause the motor to spin but not mate to the ring.

If you can wiggle the business end of the starter and feel movement in the shaft it needs new bushings.



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kraigWY

12-01-2004 09:42:12




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
I have had the same problem with my 850. I fixed it by making a new bushing that goes inside the front of the starter. Now it works great. Might want to check it out, a cheap, simple fix.



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Richard H.

12-01-2004 09:20:38




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 Re: Need an opinion from my tractor bretheren in reply to Dave H (NY), 12-01-2004 07:15:00  
Dave If your cables are bright clean and well connected (or new) Then I would suspect the cellanoid as the culprit. If it is old or abused from past starting problems the contacts inside could be about gone. It takes a lot current to energize the starter at first. That is called FLA or full load amps. If the starter switch has arcing contacts it may also be the menice

Richard



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txblu

12-01-2004 09:44:02




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 Re: Need an opinion from my tractor bretheren in reply to Richard H., 12-01-2004 09:20:38  
I agree with both of Richard's recommendations. The solenoid may be the easiest to start with. You can disassemble it by drilling out the rivets. The contactor disc can be turned 180 degrees and the threaded terminals polished off. Little 4-40 hardware and you're good to go.

Then it's only the switch to worry about which, to my surprise, aren't that expensive from the OEM.

Mark



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