Re: whats up with the six

Posted by ed1 on November 08, 2004 at 10:36:10 from (198.185.163.6):

In Reply to: whats up with the six posted by 686 on November 03, 2004 at 19:17:35:

Sounds like you woke up on the wrong side of the bed.

1.) My 686's brakes work fine and stop real good. Did you ever overhall the brakes and make sure everything is still their and working. I'll bet someone tried to adjust the brakes and broke off the adjuster or took them apart and lost the steel balls inside. It could be that after 25 years the brake disc's are simply worn out and need to be replaced.

2.) regarding the T/A, your correct it's an old design that originally came out with the SMTA. It works great in the field but freewheeling on the low side is a problem when towing a trailer. Also if the T/A clutch burns out the tractor will allways be in low.

3.) Wheel clamps are a problem. If you go out and get 4 new clamps with the cast in key and 8 new bolts you'll see a big improvement. Also use a 10' pipe on the end of a IH lug wrench to tighten. Don't worry its hard to snap 3/4" grade 8 bolts and if you do they should have been replaced anyway. If you strip the cast clamp then they should have been replaced.

4.) The D-312 engine was one of the best and in the same extended family as the 414/436/466 just smaller. The overall design, injection pump, oil filters,and water pump are all the same. Only problem was the wet sleve engine design that was later fixed with the DCA4 coolant additive and water filter. This problem wasn't limited to IH but all brands of wet sleve engines.

What was IH thinking when they came out with this tractor - survival. They were really starting to feel the profit crunch in the late 70's and didn't have the $$$ to bring out some of their inovative designs.

The original design dates back to the 1930's model "M" with a lot of improvements. If IH put in a shift-on-the-go transmission like John Deere and more gears especially in the prime tillage range it would have been an outstanding tractor instead it's a good tractor. The 3 point lift capacity on this tractor is in the 6,000 plus range - NH's new TL80A (about the same HP) can only lift 5,600 lbs. The hyd system is also rated at 23 GPM better than some newer tractors. Row crop visability is also better than NH's TL80A.

If this tractor came out in 1950 it would have been inovative. In the 1970' it was a good tractor with an old design.

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