PUMP GP-GOV & FUEL INJ 7W7899 - Caterpillar

Pilot Steering Control "STIC"
Illustration 3 g03566694The Left-hand steering control (STIC) (3) is located on the control console on the left side of the operator.Hydraulic Pumps
Steering Pump
Illustration 4 g03566695Steering pump (4) is mounted to the implement pump on the right side of the machine.Brake/Fan/Pilot Pump
Illustration 5 g03566696Brake/Fan/Pilot pump (10) is mounted to the front gear train of the engine. The pump is located behind the fuel filters on the right side of the machine. Pump (10) supplies pilot oil to the primary steering solenoids.Secondary Steering Components
Illustration 6 g03566699
(11) Secondary steering diverter valve (Pressure sensors)
(12) Secondary steering pump relay
(13) Secondary steering pump (with electric motor)Secondary Steering Pump Diverter Valve
Illustration 7 g03566700
(11) Secondary steering diverter valve (Pressure sensors)
(11a) Secondary steering pressure sensor
(11b) Steering pressure sensorSecondary steering pump diverter valve (11) is mounted on the top of the torque converter and pump drive housing.Secondary Steering Pressure Sensor
Secondary steering pressure sensor (11a) is assembled into diverter valve (11).Steering Pressure Sensor
Steering pressure sensor (11b) is assembled into diverter valve (11).Secondary Steering Pump Start Relay
Illustration 8 g03566701Secondary steering pump start relay (12) is located behind the secondary steering pump on the left side of the machine. The relay is mounted on the inside of the rear frame, to the front of the rear axle.Secondary Steering Pump (with Electric Motor)
Illustration 9 g03566697Secondary steering pump (13) is mounted to the frame on the left side of the machine.Steering Cylinders
Illustration 10 g03566702The steering cylinders are mounted on both sides of the machine. The head ends of the cylinders are attached to the rear frame. The rod ends are attached to the front frame.Steering Pilot Oil Accumulator
Illustration 11 g03566705Steering pilot accumulator (7) is located in the service bay on the right side of the machine. The accumulator stores pilot supply oil during normal operation. The accumulator provides a temporary supply of pilot oil if a loss of pump flow occurs.Steering Control Valve and Components
Illustration 12 g03566704
Steering control valve and components
(5) Steering control valve
(5a) Back-up relief valve
(5b) Crossover relief and makeup valve
(5c) Left secondary steering solenoid
(5d) Right secondary steering solenoid
(5e) Right primary steering solenoid
(5f) Steering pilot ON/OFF solenoid
(5g) Left primary steering solenoid
(5h) Crossover relief and makeup valve
(5j) Steering control spool position sensorThe steering control valve (5) is mounted to the transmission transfer gears near the articulation hitch. The steering control valve directs supply oil from the steering pump to the steering cylinders.The above listed components in Illustration 12 are part of the steering control valve.