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Re: Re: Re: Re: Re: Re: JD 4430
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Posted by G-MAN on July 14, 2004 at 10:42:27 from (67.52.48.10):
In Reply to: Re: Re: Re: Re: Re: JD 4430 posted by Mike M on July 14, 2004 at 09:43:53:
No, to be honest I haven't been in that many, at least compared to the 8- and 15-speed powershift trannies I've done, but 95% of the tractors in this neck of the woods are powershifts, which explains that. I've been wrenching on JD tractors in dealerships for around 5 years, and most of the work non-powershift work I've done on them has been on the synchrorange trannies, like those found in 4020s. The Quad-Range is basically a synchrorange with a two-speed in front of it to give 1-2, 3-4 and 1R-2R powershifts in each of four ranges. And they also introduced the bulletproof wet-style Perma-Clutch in the Quad-Range. I've been clear into one 4430 tranny all the way to removing the diff drive shaft and everything else has been top shafts (where the synchronizers are) and Perma-Clutches. Keep in mind that the early 4430s and 4630s are now more than 30 years old, and many have in excess of 10,000 hours on them and much more. Sure, you can tear one up if you're hard on it or don't keep it serviced, but for the most part they're darn tough.
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