Description
287475X – DD-3 BRAKE ACTUATOR (RH)
PART NUMBER(S):
Fleet Products: 287475-G (New), 287475X (Remanufactured) | Replaces OE: Bendix K287475 | MCI 287475, 287475X, 287475N, 4R-5-2, 4R-5-2CGRM
DESCRIPTION:
Model: DD-3 Safety Actuator – Right Hand Type 30, dual diaphragm with mechanical push rod locking mechanism
Vehicles: Motor Coach Industries (MCI)
• Side: Right-hand (RH)
• Configuration: Horizontal mount, short rod
• Dimensions: 2.66 in rod end to non-pressure plate
• Dimensions: 3.88 in yoke pin to plate
• Dimensions: 12.69 in stud end to plate
• Mounting: Stud clocking 270°
• Material: Steel chamber assembly
• Performance: Mechanical push rod locking system
• Features: Push rod clocking 0°, yoke orientation 315°, port clocking 90°
Applications: Designed for RH brake setups on MCI coaches and comparable commercial bus systems. This remanufactured DD-3 chamber provides service, emergency, and park brake control with a mechanical lock that maintains rod position in the event of air pressure loss.
CROSS-REFERENCE(S):
287475, 4R-5-2CGRM, 287475X
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Confirm horizontal orientation, RH configuration, and short rod before installing
✔ Apply BW 204-M barium-based lubricant inside shaft cavity during rebuild or installation
✔ Ensure push rod aligns with slack adjuster at ≥90° to prevent binding or drag
✔ Clamping ring bolts must be torqued evenly to prevent diaphragm sealing failure
✔ Lock port must receive minimum 70 psi to release mechanical brake hold
✔ Connect all ports according to DD-3 configuration schematic
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
Warranty Information
