Re: 1486 looking?

Posted by K.B.-826 on January 10, 2007 at 18:33:23 from (66.188.209.100):

In Reply to: 1486 looking? posted by Kirk in kansas, on January 10, 2007 at 17:43:43:

As far as glitches go, the shifting was the main one. Mostly because of not being kept adjusted, and operator misuse. Remember, the High/Low/Reverse lever is only to be shifted when the tractor is at a total standstill. Those gears are collar-shifted and trying to shift on the move will only cause grinding, which is not only hard on the shift collars, but also gives the linkage a good rattle. The speed gears- 1, 2, 3, 4 are sliding gears, it is usually best to shift them at a standstill or a slight roll, but they can be shifted on the move somewhat with a little practice. Keeping the clutch pedal linkage, dump valve linkage, and transmission brake linkage adjusted will give you the best shifting performance. Without going into a ton of detail on how the TA works, the dump valve keeps it from "binding up" in both Direct Drive and TA at the same time by dumping the oil pressure out of it when the clutch pedal is pushed in. When it is out of adjustment and the TA binds up, it creates the effect of being in two gears at once, causing the transmission shift levers to be very hard to get out of gear. If the operator then forces the lever, bad things happen with the linkage. The transmission brake is a little arm with a pad that contacts a gear in the speed transmission when the clutch pedal is fully depressed to stop the gears and make for an easy shift. To prevent excessive wear to the pad, don't fully depress the clutch pedal until the tractor has come to a stop. Push it down about 3/4 of the way, use the brakes to stop, push the pedal down the rest of the way to engage the trans brake, and make your shift. As far as major problems go, I have heard of several low-hour ring gear and pinion failures on 1086's and 1486's. Remove the top hitch link bracket from the rear of the transmission case, and you can easily inspect the ring gear. Look for flaking of the teeth.

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