VALVE GP-CONTROL 1946760 - Caterpillar

Illustration 1 g00725836
View of the Right Side of the Operator Compartment (1) Throttle lock control
Illustration 2 g00763617
Left Side of the Scraper Engine (2) Throttle lock solenoid valve
Illustration 3 g00763619
View from the Bottom of the Operator Compartment (3) Throttle lock pressure switch (4) Service brake control valveNote: The air pressure must be above 520 kPa (75 psi) before the throttle lock will operate.The throttle lock solenoid valve is electric over air. Throttle lock control (1) is located on the right side of the operator compartment next to the joystick control. Throttle lock solenoid valve (2) is located on the left side of the scraper engine compartment. Throttle lock pressure switch (3) is located under the operator compartment on service brake control valve (4) .When throttle lock control (1) is pushed to the ON position, the throttle lock control sends a signal in order to close the throttle lock solenoid valve (2). Air pressure is held between the throttle lock solenoid valve and the governor control cylinder. The governor control cylinder is now held at the current setting of the governor pedal until the throttle lock is deactivated.When throttle lock control (1) is pushed to the OFF position, throttle lock solenoid valve (2) opens. This allows airflow from the governor control valve to the governor control cylinder. The throttle lock can also be deactivated by pressing the brake pedal. When service brake control valve (4) delivers approximately 80 kPa (12 psi) of air pressure, throttle lock pressure switch (3) will deactivate the throttle lock control. This opens the throttle lock solenoid valve (2). The governor control cylinder is now controlled by the governor control valve.Note: When service brake control valve (4) has been used to disengage the throttle lock, throttle lock control (1) must be reset manually. Move the throttle lock control to the OFF position in order to reset the control.