Alliance 4707QM23KIT (frequently referenced in industry databases under the standardized Daimler/Freightliner part nomenclature prefix ABP MK4707Q-23 variations) is a heavy-duty commercial S-Cam Drum Brake Shoe & Major Hardware Installation Kit.
Technical Specifications
- Brand Name: Alliance Truck Parts (A Brand of Daimler Trucks North America)
- Brake Drum Diameter Requirement: 16.500 Inches (16-1/2")
- Brake Shoe Width: 7.000 Inches (7")
- Gross Axle Weight Rating (GAWR): 23,000 lbs
- Manufacturing Type: Commonly supplied as an authorized OES Remanufactured component requiring a core exchange deposit.
Kit Package Contents (Single-Wheel Layout)
To ensure balanced braking stability, each factory box provides full installation hardware to overhaul a single wheel-end assembly: [1]
- Lined Brake Shoes: 2 Pieces (Premium high-friction organic/metallic formulation blocks riveted onto reinforced steel back plates).
- Heavy-Duty Return Springs: High-tensile steel tension springs designed to snap the shoes back out of contact with the drum upon air brake valve release.
- Anchor Pins and Cam Rollers: Machined pins and rolling guide pieces responsible for smooth mechanical expansion against the internal S-Cam rod.
- Retaining Bushings & Clips: Associated hardware clips to eliminate shoe wobble and dragging.
Primary Vehicle Applications
This identical setup represents the most common commercial heavy-duty brake footprint found on US highways:
- Vocational & Linehaul Tractors: Factory replacement part for Daimler vehicles including the Freightliner Cascadia, Freightliner M2, and Western Star fleets.
- Axle Layouts: Form-fitted for heavy Meritor, Dana Spicer, or Eaton 16.5" x 7" rear drive or trailer axles.
