65-840R | Brake Actuator Power Cluster | Air/Hydraulic Actuator

65-840R BRAKE ACTUATOR POWER CLUSTER – AIR/HYDRAULIC ACTUATOR

PART NUMBER(S):
Fleet Products: 65-840R, 65-840, 65-840L, 840X, 840, 6510R, 6510, 6510L | OE: A840, A840X, A838, A839 | Wagner: AF840 | Automann:

DESCRIPTION:

Model: 65-840R – Right-Side Mount
Vehicles: Heavy-Duty Truck and Trailer Applications
• Output Pressure: 1,500 PSI
• Stroke: 2.5″
• Diaphragm: Type 30
• Bore Size: 1 ¾″
• Hydraulic Volume: 6 Cubic Inches
• Inlet Port: 5/16″ Inverted Flare
• Mounting Bracket: Right Side
• Actuation Type: Air/Hydraulic
• Function: Converts compressed air into hydraulic braking pressure for use in air-over-hydraulic brake systems
• Unique Features:
– Wagner-style design
– Internal residual check valve
– Direct-fit OE replacement
• System Fitment: Compatible with air/hydraulic braking systems in heavy-duty trucks, trailers, and vocational vehicles
• Fluid Compatibility: DOT 3, DOT 4, DOT 5, DOT 5.1, and mineral-based hydraulic fluids
• Installation: Mount horizontally for optimal seal retention and air purge, bleed system post-installation

Applications:
Suitable for use in heavy-duty applications requiring air-to-hydraulic brake conversion. Directly replaces Wagner A840/AF840, Orscheln A840X, and equivalent cluster units used across various makes in vocational, agricultural, and transport segments.

CROSS-REFERENCE(S):

A cross-reference listing means the part can be used as a functional replacement or is interchangeable across the cited systems.

IMPORTANT INSTALLATION NOTES:
✔ Right-side mounting – maintain correct orientation during install
✔ Use DOT or mineral-based hydraulic fluids only
✔ Internal residual check valve pre-installed
✔ Bleed hydraulic system after installation to remove air
✔ Apply oil to mechanical pivot points as part of routine service
✔ No published torque specs – align bracket properly to avoid internal wear

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