623F Wheel Tractor-Scraper Hydraulic System Caterpillar

Pilot Control Valve (Three Functions)

Usage:

623F 5EW

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Illustration 1	g00528298

(1) 149-9127 Pilot Valve

(2) Torque for 7X-1598 Pressure Switch ... 75 ± 7 N·m (55 ± 5 lb ft)

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Illustration 2	g00528304

(3) Pilot Valve (Bowl)

(4) Pilot Valve (Ejector)

(5) Pilot Valve (Elevator)

(6) Torque for six nuts ... 19 N·m (14 lb ft)

Caterpillar Information System:

994D Air System Wheel Loader Governor (Air Compressor)

515 Wheel Skidder and 525 Wheel Skidder Cooling System Coolant Sample - Obtain

963B Track-Type Loader Circuit Breakers - Reset

D9R Track-Type Tractor Parking Brake Control

515 Wheel Skidder and 525 Wheel Skidder Cooling System Coolant Extender (ELC) - Add

D9R Track-Type Tractor Light Switches

561M Pipelayer Final Drive Oil Sample - Obtain

963B Track-Type Loader Battery - Inspect

IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Creeper Control - If Equipped

3046 Engine For Caterpillar Built Machines Crankshaft Rear Seal - Install

D9R Track-Type Tractor Tachometer

515 Wheel Skidder and 525 Wheel Skidder Cooling System Coolant Additive (DEAC) - Add

623F Wheel Tractor-Scraper Machine Systems Tractor and Scraper - Separate

623F Wheel Tractor-Scraper Machine Systems Tractor and Scraper - Connect

994D Air System Wheel Loader Pressure Sensor (Air Tank)

973 Track-Type Loader Power Train System Schematics

963B Track-Type Loader Fuses - Replace

3046 Engine For Caterpillar Built Machines Flywheel Housing - Remove and Install

515 Wheel Skidder and 525 Wheel Skidder Ether Starting Aid Cylinder - Replace

994D Air System Wheel Loader Air Tank

623F Wheel Tractor-Scraper Machine Systems Brake Actuator - Remove

623F Wheel Tractor-Scraper Machine Systems Brake Actuator - Install

515 Wheel Skidder and 525 Wheel Skidder Transmission and Grapple Electronic Control System Troubleshooting Switch (Tong Auto/Manual)

623F Wheel Tractor-Scraper Machine Systems Brake Actuator - Remove