Description
6510L BRAKE ACTUATOR POWER CLUSTER – AIR/HYDRAULIC ACTUATOR
PART NUMBER(S):
Fleet Products: 6510L, 6510, 6510R | OE: A838, A839, A840 | Automann:
DESCRIPTION:
Model: 6510L – Left-Side Mount
Vehicles: Heavy-Duty Truck and Trailer Applications
• Output Pressure: 1000 PSI
• Stroke: 2.5″
• Diaphragm: Type 24
• Bore Size: 1 ½″
• Hydraulic Volume: 3.5 in³
• Inlet Fitting: 5 1/16″ Inverted Flare
• Mounting Bracket: Left-Side
• Actuation Type: Air/Hydraulic – Converts pneumatic pressure into hydraulic braking force
• Function: Enables spring-brake or apply-release functions in systems lacking full pneumatic power
• Unique Features: Combination air/hydraulic design, sold as new (no reman), ready to install
• Fluid Compatibility: DOT 3, 4, 5, 5.1 or mineral-based hydraulic oils
• Residual Check Valve: Internal valve included in design
• System Fitment: Replacement for Wagner-style clusters including AF838/AF839 and all 6510-series variants
• Orientation: Horizontal mounting recommended to prevent fluid leakage or air entrapment
• Application Scope: Ideal for emergency braking systems or mixed brake configurations
• Testing: Leak and performance tested prior to shipping
• Support: Fleet Products technical support available on request
Applications:
The 6510L is engineered for medium- and heavy-duty trucks and trailers using air/hydraulic brake systems. Designed as a direct-fit replacement for Wagner style power/pressure clusters, it is commonly used in legacy or retrofit applications where pneumatic assist is critical but not continuous.
CROSS-REFERENCE(S):
6510L, 6510R, 6510, A838, A839, A840, 65-840R, 65-840L, AF838, AF839, AF840, 6510-1, 6510-2, 6510-3, 6510-4, 6510-5, 6510-6, 6510-7, 6510-8, 6510-9, 6510-10, 6510-11A cross-reference listing means the part can be used as a functional replacement or is interchangeable across the cited systems.
IMPORTANT INSTALLATION NOTES:
✔ Brand new, no core return required – shipped ready to install
✔ Mounts on left-side bracket for ease of servicing
✔ Ensure horizontal installation for optimal hydraulic stability
✔ Use correct fluid type per vehicle spec (DOT or mineral-based)
✔ Bleeding required post-install to remove air from system
✔ Lubricate pivot point regularly to maintain actuator efficiency
✔ Maintain proper alignment to avoid internal seal wear
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Warranty Information
