Mack R600 shifting
Uploader Comments (trucks609)
Top Comments
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The right stick is used just like a two speed axle, it's called split shifting- without a load you can use it as a 6-speed- you shift 1lo-2lo-3lo-4lo-4hi-5hi. This is completey different from a Roadranger 9 speed which is much more common these days- they also have 5 gears and then a 2 position air shift valve on the stick- you shift lo-1-2-3-4, pull the switch up and go back through 1-2-3-4. The actual shift pattern is lo-1-2-3-4-5-6-7-8. These are much easier to learn than the old split Mack 9
All Comments (43)
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Lordtaw, you are a dummy! Yes I said Dummy! I have 3 confirmations your info is WRONG! Count them, 1-2-3. Don't f**k with a MACK Man or his WOMAN!
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Dear lord.... The 12 speed TRTXL1070 had an air shift knob on the main stick with HI-LO-N-R. Second stick called the mud stick had just two gears, hi & low, you just used first gear on the main stick with the mud stick in low. later they replaced the stick with a switch on the dash, The transmission in the video is most likely a true Mack twin stick duplex/triple/quad box. That R model has a metal dash which was from 1963-1973 and the END(T)673 + twin stick was an option in an R.
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@Fireheart528 hahahaha..no
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you dumb fuckers. i have been reading your posts. no one has any idea how this works. the pole closest to you has 5 gears. the other has low, high, and rev. thats it. it is a trx trans. it was called a 12 speed, but had 15 speeds. 5 high, 5 low, and 5 rev. i know because i have been a mack truck mechanic for 15 years. plus we haul a lot of turkey shit with 1970's r-models. they are all tip turbine engines with 12 speed trannys.
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@studeystudebaker50 agreed 100%, very nice.
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Nice work! My first truck job was on one of these right after learning on a 13 speed. A learning experience for sure.
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love the green
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It is very wonderful.
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And the driver knows what he's doing to shift twin sticks without touching the clutch
This is also a 9 speed OD.
trucks609 6 months ago 7