The GRACO 77X304 is a heavy-duty electric lubrication pump system designed for automatic lubrication and transfer applications. It features a 24 VDC motor, a 27 kg (60 lb) grease reservoir, a follower plate, and a low-level signal. The system is constructed for robust performance in demanding environments such as construction, mining, and industrial equipment, supplying fresh lubricant and flushing contaminants from critical pivot points.

Key Features:

• Electric lubrication pump system
• HP Pump, 24 VDC, 27 kg (60 lb) reservoir
• Heavy-duty, designed for harsh environments
• 24.6–295 cm³/minute (1.5–18 in³/minute) for HP models
• Maximum outlet pressure: 344 bar (34.47 MPa, 5000 psi) for HP models
• Compatible with injector-based lubrication systems
• Low level signal and follower plate for efficient grease usage
• GRACO Advantage Drive™ – heavy-duty gear drive, lubed for life
• Motor control with speed and AMP control
• Cold weather performance (-40°C)
• More efficient seal replacement
• Audible sound pressure: 71 dB(A)

Applications:
Heavy-duty construction, mining, industrial, and agricultural equipment requiring continuous, automatic lubrication to reduce component wear and prevent failures.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing systems.
• Ensure the pump is installed in a location accessible for maintenance and monitoring.
• Connect the 24 VDC power supply within the specified voltage range (18–32 VDC).
• Use appropriate fittings and hoses as per system requirements.
• Regularly check the follower plate and low-level signal for proper operation.
• Refer to the manual for detailed installation and maintenance procedures.
• Perform routine inspections and maintenance to ensure long-term reliability.
• Keep the reservoir filled with the recommended lubricant.
• Monitor system pressure and flow rates for optimal performance.
• Replace seals and worn components as needed.