That it does... more specifically, it decouples the pressure plate from the clutch plate, and effectively separates the transmission input shaft from the engine crankshaft (which is coupled to the flywheel)... but what it doesn't do is make the input and output shaft rotate at matching speed, which is why I'm saying that, if your timing is off, it'll be off either way.
Swift making it difficult
Discussion in 'Experienced Truckers' Advice' started by Cw5110, Jan 8, 2014.
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Clutching does disconnect the engine from the transmission but what you're really accomplishing is breaking torque, which is what allows you to move from being in gear to neutral. Breaking torque can also be accomplished by letting off the accelerator. These transmissions were designed to be floated which is why they aren't syncronized.
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Kind of similar to the engine fan and clutch. When the fan clutch is engaged, the fan is coasting to a stop and isn't under power. I would rather stick my fingers in the fan when the clutch is engaged just like I would rather try to mesh gears in the transmission when the clutch is engaged. I suppose I could try to get my hand moving fast enough to match my arm speed to the fan speed but it seems like it would be alot easier on my fingers (and my wallet) if I just let the fan clutch de-couple the fan from the engine.Last edited: Jan 16, 2014
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Everyone has their own driving styles, and I'm not telling anyone to change anything. What got me on the subject was this notion that transmissions are built different now than they were 30 years ago, which made me do the Hollywood eyebrow raise upon reading it.
I'm not saying clutching is inherently bad... doing sitework driving, there are times you'll have to use that clutch... the problem is that there are too many drivers who mash the #### out of it, engage the clutch brake when they shouldn't, try using the clutch as a speed control, etc, even if they are capable of shifting without grinding gears. Which is why, not only have I already had to replace clutches on 2011 and 2012 model year trucks, but I also have to replace the one on my 87 Silverado, because the previous owner, rather than put in the proper throttle cable and rebuild the carb, decided he's counteract the high idling by letting off on the clutch to bring down the engine RPMs when the vehicle was stopped.
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