Product Overview: Genie 24V Lift Pump Contactor (Part #74266GT)

Product Specification

24V Lift Pump Contactor 74266GT For Genie Z-30/20N Z-34/22N Z-40/23N Z-45/25 DC

The Genie 24V Lift Pump Contactor (Part #74266GT) is a critical electromechanical relay specifically designed for the hydraulic lift system in Genie articulated and telescopic boom lifts. It functions as a high-power switch, activated by the control system, to engage and disengage the lift pump motor, which is responsible for raising the boom and platform.

Key Features & Specifications

• Genuine OEM Part: Manufactured to Genie's exact specifications, ensuring perfect compatibility and reliable performance.

• Part Number: 74266GT (This is the essential identifier for correct ordering).

• Voltage Rating: 24V DC. This is the coil voltage required to activate (or "pull in") the contactor. It matches the machine's control circuit voltage.

• Function: Lift Pump Contactor. It handles the high current required by the hydraulic lift pump motor, which is separate from the drive function.

• Heavy-Duty Construction: Built to handle the high amperage (typically 80-100+ amps) of the DC lift pump motor and to withstand the vibrations and environmental conditions of a construction site.

• Terminal Design: Features high-current terminals for the motor circuit and low-current terminals for the 24V DC control signal.

Core Function & Application

This contactor is a vital component in the machine's hydraulic control circuit. Its primary function is to:

1. Receive a Control Signal: When the operator presses the "UP" function on the platform or ground controls, the machine's control system sends a 24V DC signal to the coil of this contactor.

2. Switch High Current: The energized coil creates a magnetic field that pulls a set of heavy-duty internal contacts together, completing the high-current circuit between the batteries and the lift pump motor.

3. Activate the Hydraulic Pump: This allows full battery power to flow to the lift pump motor, causing it to run and pump hydraulic fluid to extend the boom cylinders, thus raising the platform.

4. Deactivate the Pump: When the operator releases the button, the 24V signal is cut, the magnetic field collapses, the contacts spring open, and power to the lift pump motor is shut off, stopping the lifting action.

Compatibility

This specific part number (74266GT) is designed for the following Genie boom lift models:

• Genie Z-20N

• Genie Z-30/20N

• Genie Z-34/22N

• Genie Z-40/23N

• Genie Z-45/25J (Note: The listing often includes Z-45/25, which is typically the Z-45/25J model)

Important: Always verify your machine's model and serial number before purchase to ensure compatibility.

Symptoms of a Failing Contactor

You may need to replace this contactor if you experience any of the following issues:

• Intermittent or No Lifting: The boom fails to lift, or the lifting function works sporadically.

• Audible Clicking Without Action: You hear a loud "click" from the contactor when trying to lift, but the pump doesn't run. This often indicates the coil is activating but the main contacts are burnt out.

• Visible Damage: Signs of overheating, melting, arcing, or corrosion on the contactor's body or terminals.

• Machine Blows Fuses: The lift circuit fuse blows repeatedly when the lift function is engaged.

Why Choose an OEM Genie Part?

• Perfect Fit: Guaranteed to mount correctly and connect to the existing wiring harness without modification.

• Designed for Purpose: Engineered to handle the specific in-rush and continuous current demands of the Genie lift pump motor.

• Safety and Reliability: Ensures the machine's safety systems operate as intended. A faulty aftermarket contactor can fail dangerously.

• Durability: Constructed with quality materials to provide long service life in a demanding environment.