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I always wondered why bench-bleeding is necessary. OK you get rid of trapped air in the M/C but if you install the M/C dry, fill it with brake fluid and then bleed the system, you also get all the air out, right?
I can’t imagine that Ford had all the M/C bench-bled prior to installation in a new car.
 
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I think it's just a matter of getting all that air out of the master...instead of pushing all that air through your brake lines. It only takes one or two full strokes to get all the master air out. (maybe 3 or 4...but it isnt hard or time consuming). The last M/C I got had a little kit that came with it...2 nylon fittings and 2 5" tubes that you stick back in the reservoir...and you pump-n-go. I did it on the car, the hooked up the brakelines and bled those. Done in 30 minutes.
 

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Because you can not get a completely full stroke on the m/c using the brake pedal you will never fully purge the m/c of air unless you bench bleed.
 
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