Quote:
Originally Posted by 51 MERC-CT
Unlike passenger vehicles that were slower to adopt power brakes, trucks at that time had been using 'air brakes' for many years.
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I had power brakes (not air brakes) on my 1948 Seagrave pumper. I never knew how well they worked until the engine quit on me one time; I was actually standing on the brake pedal with both feet, pulling up as hard as I could on the steering wheel and it would barely slow down.