STARTING MOTOR GP-ELECTRIC 1984111 - Caterpillar

Do not engage the differential lock with one wheel spinning.Reduce engine rpm, until the wheel stops spinning, before depressing the differential lock pedal.
Illustration 1 g00725885
View of the Operator Compartment (1) Differential lock control
Illustration 2 g00763634
View from the Bottom of the Operator Compartment (2) Differential lock solenoid valve
Illustration 3 g00725918
Differential (3) Differential lock cylinder (4) Jaw (5) Piston (6) Jaw
Illustration 4 g00763635
View from the Right Rear of the Tractor (7) Quick release valve for the differential lock
Personal injury or death can result from limited steering control.Engaging the differential lock when the machine is moving can limit steering control.Do not engage differential lock when machine is moving at high speed because steering control will be limited.
The differential lock control is electric over air. Differential lock control (1) is located on the floor of the operator compartment. Differential lock solenoid valve (2) is located under the operator compartment.When differential lock control (1) is activated, differential lock solenoid valve (2) opens. When differential lock solenoid valve (2) is opened, air pressure is sent to the differential.The air pressure will force piston (5) to the right. This will move jaw (4) against jaw (6). When differential lock control (1) is released, the differential lock solenoid valve (2) is closed. This allows air that is between the differential lock solenoid valve (2) and quick release valve (7) to flow through the exhaust passage for the quick release valve. Air pressure inside the cylinder will exit through quick release valve (7).