Description
287186-G – DD-3 BRAKE ACTUATOR LONG ROD (RH)
PART NUMBER(S):
Fleet Products: 287186-G (New), 287186X (Remanufactured) | Replaces OE: Bendix K287186 | MCI 287186, BX287186, BX287186X, PB-287186-R, 287186N
DESCRIPTION:
Model: DD-3 Safety Actuator – Type 30, Long Rod (RH) dual diaphragm actuator with mechanical roller locking system
Vehicles: MCI – Motor Coach Industrial Bus
• Side: Right-hand (RH)
• Configuration: Vertical mount, long rod
• Dimensions: 12.69 in stud end to plate
• Mounting: Stud mount, 270° clocking
• Material: Steel chamber assembly
• Performance: Mechanical roller locking system
• Features: Yoke orientation 315°, port clocking 90°
• Left-hand orientation with long push rod and vertical mounting style
• Service and auxiliary diaphragms separated by internal metal plate
Applications: Designed for MCI coaches and similar transit buses where parking brakes must remain applied in the event of air loss. Ideal for systems requiring secure, mechanical brake hold in RH mounting configurations.
CROSS-REFERENCE(S):
PB-287186-R, K287186, 287186N
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:
✔ Install actuator with exhaust check valve and drain slot facing downward
✔ Use BW 204-M barium-based lubricant in shaft cavity during rebuild or installation
✔ Push rod must maintain ≥90° angle to slack adjuster arm for optimal alignment
✔ Clamping ring bolts should be tightened evenly to avoid diaphragm leaks
✔ Apply ~70 psi service pressure to release park position from mechanical lock
✔ Inspect rod alignment, travel, and locking mechanism every 3 months or 900 hours
✔ Mounting torque should follow specific OEM recommendations for RH chamber installs
✔ Service and auxiliary diaphragms must be replaced with compatible Bendix components
Warranty Information
