The GRACO 188614 BLOCK, PILOT is a small, precision-engineered component made from acetal, designed to function as a pilot block within GRACO air-operated diaphragm pumps. Its primary role is to assist in the control and actuation of the pump’s air valve system, ensuring reliable and efficient operation of the equipment.

Key Features:

• Pilot Block
• Acetal
• GRACO air-operated diaphragm pumps (e.g., Huskyt 2150 series)
• Precision fit for reliable actuation
• Durable acetal construction for wear resistance
• Ease of maintenance and replacement

Applications:
Used in GRACO air-operated diaphragm pumps for controlling air valve actuation, commonly found in industrial fluid transfer and spray applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with GRACO equipment, reducing the risk of premature failure or operational issues.
• Remove the old pilot block by pulling it straight up and out of the cavity using needle-nose pliers.
• Inspect all related components (actuator pistons, bearings, o-rings) for wear or damage during replacement.
• Clean all parts before reassembly and ensure proper torque (50–60 in-lb or 5.6–6.8 N·m) when tightening.
• Refer to the specific pump manual for detailed disassembly and reassembly instructions.