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Ford 8630 Power Shift Disaster

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Glenn in ND

05-07-2002 18:26:05

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Realize this is primarily an antique tractor site, but wondering if anyone has experienced transmission problems w/ a power shift on the 30 series Ford tractors. We have an 8630 tractor w/ 4200 hours that after 10 months of diagnostics and repair, we ended up with a bill for $20,000. and it doesn't work right yet. New Holland isn't sympathetic and won't talk to us about it.
Would appreciate hearing from anyone that has had similar problems.

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01-14-2004 09:31:45

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 Re: Ford 8630 Power Shift Disaster in reply to Glenn in ND, 05-07-2002 18:26:05  
We have a '92 8630 in Mandan, ND. We have had transmission problems and dig. dash problems (flashing lights). Dash cured 1 time by rebuilding alternator. Problems seems to be related to voltage swings in regulator. (Doing it again now - also related to cold temps.) Transmission went out cold, everyone said said it was computer, but it wouldn't move when bypassing computer which it is supposed to do if computer out. All kinds of funny codes, would just pretty much display every code in book. Turned out to be $7 bosch relay in dash. (Husband used to be ASE Cert. automotive - has managed to fix it each time.) Also transmission blows fuses - have learned to keep supply on hand. (Bad fuseholder - haven't gotten 'round to replacing it). Other than that we like the tractor.

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05-10-2002 18:09:23

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 Re: Ford 8630 Power Shift Disaster in reply to Glenn in ND, 05-07-2002 18:26:05  
I hate to say it but you probily should have purchased a rebuilt transmission assembly if the problem was in the transmission. These things are basically trouble free but sooner or later with age and use all powershifts will fail. The company really doesn't want dealers to work on the internals of the transmission because of the extreme importance of cleanliness and the required tolerences. Newer service manuals do not have teardown procedures even written in them. The company wants the dealer to install on exchange basis a rebuild trans from a factory certified rebuilder. This will become more common in future years as all 70 series transmissions are of similar design and are the Fiat designed powershifts in some other models like the TM/60 series.

I have an 8630 with the dual power gearbox. If I find another I will buy it. The powershifts offer convience over the old "crashbox" unsyncronized trans but you know the manual gearbox will work the same 20 years from now as it does today. Whereas sooner or later the seals on pressure delivery passages to the clutchpacks in the multiple rotating gear assemblies will someday fail and require a rebuilt trans to be installed. The sad part is no tractor company even offers a manual transmission in larger 2wd tractors anymore.

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