Semi truck driving manual




















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Part 2. Start the truck. Hold the clutch pedal to the floor, as you would to start a normal manual transmission vehicle.

This stops the transmission gears from turning, which allows the shifter to slide into gear. Push down the accelerator and slowly release the clutch. As you might guess when the vehicle's got 18 different speeds, getting the truck into Lo gear on Low setting will get you going about one mile per hour, if that. Once you've slid into it, release the clutch and you'll probably be ready to shift into Lo-H. To shift into Lo-H, you'll change the splitter to High gear to shift into high. You need to depress the clutch slightly, but not all the way to floor, then let it out to shift into Lo-H.

Double-clutch to shift into first gear, low setting. Depress the clutch again slightly not to the floor when the RPMs reach first-gear range, and switch the splitter back to "L," then pull the gear shift into the neutral position and release the clutch. Depress the clutch again, all the way, and push the gear shift into first, as you release the clutch. This is called double-clutching, and it's necessary because you can't split between low and high on the splitter while you're in neutral, meaning that you have to toggle from "H" back to "L," then shift into neutral, then operate the clutch again to get it into first.

It's a lot of work. Continue this pattern through the first half of the gears. To make the half steps, continue pushing the splitter button, releasing the accelerator, pushing in, and releasing the clutch. Switch over to fifth gear when you're ready. This is absolutely essential. Switch the range, then double-clutch-shift back to where 1 was before, and it will be fifth gear.

Continue shifting through the higher gears. The basic principles now repeats itself. Part 3. Use the color indicators on the tachometer. Most RPM gauges should be color-coded, with rpms at about the top 12 o'clock of the gauge, which is typically colored green. This is the ideal place to shift between gears. This region is typically colored Yellow, with anything above colored red. If you're less than rpm and try to shift, the engine is likely to splutter and possibly stall. Get used to the general shifting conditions.

After a while, you'll be able to familiarize yourself with the general positions that you need to shift, but in instruction school, you learn a few basic rules of thumb.

Be in top gear at 50 mph Generally speaking, if you're traveling at highway speeds or greater, you should be at top gear always. Be in fifth or sixth gear for sharp turns in city conditions. To avoid stalling, it's good to be switched over into the upper gears. Other general speed guidelines will vary from transmission to transmission, for different trucks. You'll need to ask your instructor or other experienced drivers for tips. Downshift whenever you're slowing down.

To downshift, you need to slow down to the rolling speed by hitting the brake, then select the gear for that range. Typically, you need to rev up to rpm, then slip the transmission into the proper gear for that speed range. On every Eaton transmission there is a different setup. For the one that is mentioned, the "splitter" is on the left side of the knob and the range selector is the toggle switch directly on the front portion of the shaft. On a 10 speed, you do not have a "splitter" but only a "range selector", however on a "Super 10" all it has is a "splitter".

Not Helpful 6 Helpful That's too dangerous because you are free wheeling in neutral and may gain so much road speed that you'll be unable to get back in gear in time. If in gear, pull out and you'll be in neutral. Neutral is what you should always put your truck in when parking and when starting it up. Not Helpful 1 Helpful Having the ability to "split gears" on 13s and 18s are nice for trucking on steep grades.

Split gears are RPM steps instead of 1k. Supers 10s are best to learn on, as they do not require you to go through the pattern twice.



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