Description: Brake Drum
Condition: New 
Brand: Paccar® 
Part Number: WWD 65654B

• Weight: 100 lbs
• Fit for: Kenworth, Peterbilt
  
• Specifications:
  • Bolt hole: 10
  • Location: Front
  • Wheel type: Disc
  • Drum mounting: Outboard
  • Back plate thickness: 1/2 in
  • Bolt circle diameter: 11-1/4 in
  • Maximum diameter: 16-5/8 in 
• Functions:
  
  • The primary function of the Brake Drum is to create friction when the brakes are applied.
    
  • During braking, hydraulic pressure from the brake master cylinder pushes the brake shoes outward into contact with the inner surface of the drum.
    
  • Supporting the wheel bearings: The drum often serves as the mounting surface for the wheel bearings, which allow the wheel to rotate smoothly.
    
  • Heat dissipation: The cast iron construction allows the drum to absorb and dissipate the significant heat generated during braking, preventing excessive temperatures that could damage the braking system

Headquartered in Bellevue, WA, PACCAR® is a Fortune 500 company specializing in heavy duty commercial vehicles. Founded in 1915 as the Pacific Car and Railway Company, PACCAR Inc grew from a small railway equipment supplier to one of the world's largest manufacturers of light, medium, and heavy duty trucks. It is a major designer and manufacturer of diesel engines and powertrain components through dealer networks in over 2,200 locations around the world. The company also operates parts distribution centers for aftermarket support that includes customer call centers operating 24 hours a day and state-of-the-art inventory management systems that speed up order processing.