Description
287475X – DD-3 BRAKE ACTUATOR (RH)
PART NUMBER(S):
Fleet Products: 287475X (Remanufactured) | OE: 287475, 4R-5-2CGRM, K287475
DESCRIPTION:
Model: DD-3 Safety Actuator – Right Hand
Vehicles: Motor Coach Industries (MCI)
• Chamber Type: Type 30, dual diaphragm with mechanical push rod locking mechanism
• Configuration: Horizontal mount, right-hand orientation, short rod
• Dimensional Specs:
• Rod End to Non-Pressure Plate (A): 2.66 in
• Yoke Pin to Plate (C): 3.88 in
• Stud End to Plate (E): 12.69 in
• Push Rod End Rotation (B): 0°
• Yoke Orientation (L): 315°
• Mounting Stud Clocking (M): 270°
• Non-Pressure Plate Port Clocking (N): 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
✔ Remanufactured unit – core return required
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
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Warranty Information
