Atwood Hydraulic Brake Actuator Parts List and Schematic

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Atwood Hydraulic Brake Actuator Parts List and Schematic

Atwood's Unique Design for Superior Braking

  • Unique design creates more pressure on the brakes than in-line actuator systems.
  • Parts interchangeability between 6K and 8K actuators.
  • Lock-out feature allows use with standard hydraulic brakes for backing up. No need for specific free-backing brakes.
  • Disc brake actuators available specifically for use with disc brake systems. Supplies, even more, fluid pressure to brakes than standard hydraulic.
  • A breakaway device will set trailer brakes automatically should separation from tow ball occur.
Atwood Hydraulic Brake Actuator Schematic

Ordering Replacement Atwood Parts

Atwood Logo

Replacement Parts are no longer available, but we recommend using the UFP A-60s or A-75s. Some modifications may be needed. Possibly drilling new holes. 

  • Atwood Hydraulic Surge Brake Actuators for both DIsc and Drum Brake Applications.
  • Atwood 6,000 lb. Capacity Brake Actuators Include Model numbers: 82543, 83153, 84132, 84133, 88730, 88740
  • Atwood 8,000 lb. Capacity Brake Actuators Include Model numbers:
  • 83000, 83005, 83010, 83060, 8036

94 comments

  • Craig

    Hi, looking for replacement master cylinder for attwood 6600 surge brake (parts #6,7,8 in your diagram). Any suggestions?

  • dave T

    To Doug Stanford. Your rusty atwood master cylinder . I just spent three days soaking mine in muratic acid. Remove e-ring stop in cylinder piston sleeve and by tapping on the back of cylinder the componets may come forward. Watch for a thin flat washer in rubber cup seal. Clean it all up with more acid, rinse well and carefully insert componets making sure the piston assembly works freely against the spring

  • Dennis Woods

    Is a replacement for an Atwood 171 available?

  • Tommy

    I have a complete system with rebuilt actuator or brake cylinder lmk who needs it rather sell the complete unit

  • Steve Burns

    I can’t find the master cylinder anywhere?
    Any ideas?

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