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Stoddard Co. SEMO | I've got two 9 speed transmissions in day cab trucks. I'm currently looking at another day cab truck that also has a 9 speed, but 3rd and 4th on the low side and 7th and 8th are swapped. Why is this different from my other eaton fullers? |
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| this was fairly common on older transmissions especially in the 8LL versions. Can be a pain if you are not used to it like when you are down shifting. |
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Geuda Springs, Kansas | Is t that because they are an overdrive transmission? I think you can tear a 9 regular 9 speed apart and put it back together with those two gears backwards and have overdrive. You are correct, the backward shift pattern would be annoying. |
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Traverse City MI | That's an X pattern cover. You can pull the shift lid and change it with a regular cover if you want. Then it will shift the same. |
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Snipesville, GA | We have two 9's and one is the backwards 9 that some refer to as an upside down 9. This is I think the 8LL transmission also that has double reduction. Does double reduction have any affect on shift pattern?
Here's my pattern
R 2 5
Lo 3 4
Edited by tater1086 12/15/2017 09:29
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NENE | Agree. Some transmissions with an overdrive gear in high will be backward but the shift cover has an extra linkage to reverse the pattern back to normal. |
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Stoddard Co. SEMO | So, is there any performance difference between the two? |
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Cleveland, MS. Own small farm near Booneville, MS | Backward shift pattern usually indicates that it is an overdrive transmission. If you have ever heard the expression "Throw it up against the dash." That's what they're talking about. I can't remember the designations right now but the same transmission is available with the standard shift pattern. If memory serves correctly the overdrive is about 27%. Edit to add: I think I remember that the "turned around 8 and 9" is designated by the letters RTO and the standard shift pattern of a 9 speed overdrive is RTX, but memory is sketchy at best as I haven't dealt with any of this in several years.
Edited by clevepreach 12/15/2017 21:09
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Eaton Fuller 9 speed shift pattern variations
