Air Brake Question

Topic 6233 | Page 1

Page 1 of 1
Dondi M.'s Comment
member avatar

Is a power screw comparable to a caliper piston that you would find in disc brakes on a car or motorcycle?

Brett Aquila's Comment
member avatar

I'm not really sure what the power screw is. If it's the same thing as the S-cam then yes, it's sort of like the piston in a caliper. The S-cam twists and a lobe pushes against the rod which activates the brakes. It's kinda the same as a camshaft on an overhead valve engine. The cam turns and when it gets to the lobe it opens the valve. In the case of air brakes the cam turns and the lobe pushes the pads against the drum.

Page 1 of 1

New Reply:

New! Check out our help videos for a better understanding of our forum features

Links On TruckingTruth

example: TruckingTruth Homepage

Upload New Photo
Please enter a caption of one sentence or less:

Click on any of the buttons below to insert a link to that section of TruckingTruth:

Getting Started In Trucking High Road Training Program Company-Sponsored Training Programs Apply For Company-Sponsored Training Truck Driver's Career Guide Choosing A School Choosing A Company Truck Driving Schools Truck Driving Jobs Apply For Truck Driving Jobs DOT Physical Drug Testing Items To Pack Pre-Hire Letters CDL Practice Tests Trucking Company Reviews Brett's Book Leasing A Truck Pre-Trip Inspection Learn The Logbook Rules Sleep Apnea

0 characters so far - 5,500 maximum allowed.
Submit Preview



Why Join Trucking Truth?

We have an awesome set of tools that will help you understand the trucking industry and prepare for a great start to your trucking career. Not only that, but everything we offer here at TruckingTruth is 100% free - no strings attached! Sign up now and get instant access to our member's section:
High Road Training Program Logo
  • The High Road Training Program
  • The High Road Article Series
  • The Friendliest Trucker's Forum Ever!
  • Email Updates When New Articles Are Posted

Apply For Paid CDL Training Through TruckingTruth

Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Seriously! The application only takes one minute. You will speak with recruiters today. There is no obligation whatsoever. Learn more and apply here:

Apply For Paid CDL Training