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Tractor Talk Discussion Forum

Ford 4630 Clutch Question

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BruceThornton

12-03-2005 17:48:51




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I recently acquired a 1991 Ford 4630. It starts and runs great. The only thing that concerns me is that every time I shift, it grinds a little when shifting it into gear. Even if I have the clutch pushed in and wait ten or fifteen seconds, it still grinds a little going into gear. It is better, if the throttle is clear down to idle, but still not perfect. Is this normal, or does my clutch need some adjustment, or am I going to need a new clutch soon? Thanks!!

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BruceThornton

12-04-2005 08:25:37




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 Re: Ford 4630 Clutch Question in reply to BruceThornton, 12-03-2005 17:48:51  
Thanks for all your input!! It"s amazing the knowledge and experience that is available here!! I"m always interested in everyone"s knowledge and point of view. Thanks!! Keep up the awesome resource.



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HA in OH

12-04-2005 06:37:29




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 Re: Ford 4630 Clutch Question in reply to BruceThornton, 12-03-2005 17:48:51  
I'm with Kentuck. Retired nieghbor had auction last spring, kept a nice 4630 1700 hrs, like the tractor hate the way shifts.



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Super99GM

12-03-2005 19:14:26




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 Re: Ford 4630 Clutch Question in reply to BruceThornton, 12-03-2005 17:48:51  
A rough pilot bearing will also cause the shifting problems. Excess friction in the pilot bearing causes the transmission input shaft to continue turning even if the clutch disc is released.



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Hurst

12-03-2005 18:45:27




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 Re: Ford 4630 Clutch Question in reply to BruceThornton, 12-03-2005 17:48:51  
Adjust the pedal to the specs in the manual, which should be about an inch and a half of freeplay, I don't have a manual with me for the 10 series, so I forgot the exact figures, but it is over an inch. Also, look for any engine or hydraulic oil dripping out of the bellhousing. If you see any, then that is probably your problem. Those dry clutches hate oil and when it gets on them, they swell and get hard to shift. Another way to tell if it is oil, put the tractor in 7th or 8th gear and let the clutch out. If it slips a little before it stalls the engine, then it has oil on it or something else is wrong with your clutch. If it stalls it right away, then no oil. Our Ford 6610 and 7610 are not the easiest to get into gear, but they are not bad at all with everything working and the clutch adjusted correctly. One thing I have found out is that if you shift it into 1-2-3-4-r first, then shift it into low, you don't grind when shifting it into low range because of the low ratio. Then if you want high range, shift it into high range. Also, check your oil level in the rear end. Make sure it isn't low, if it is, then there may not be enough oil to stop the gears from moving (fluid friction). It won't be much, but it seems to make a difference on ours, and plus, you need if full for the hydraulics too. Good luck.

Hurst

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kyhayman

12-03-2005 17:54:14




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 Re: Ford 4630 Clutch Question in reply to BruceThornton, 12-03-2005 17:48:51  
Sounds like Fords famous 'crash box' transmission....

Assuming the clutch pedal is adjusted correctly its most likely nature of the beast. These are pretty much put in the gear you want and then start off. Helps if the parking brake isnt on. Up shifts arent real good with these, double clutching helps (a forgotten art to some), down shifts are almost impossible.



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