Hydraulic System Oil - Change
Show/hide table
| NOTICE |
|---|
Take extreme care to insure the cleanliness of the hydraulic oil. Keep the hydraulic oil clean in order to extend the component life and assure the maximum performance. |
- Open the engine access cover.
Show/hide table
 | |
| Illustration 1 | g00645039 |
- Slowly remove the hydraulic tank filler cap (1) in order to relieve the system pressure.
Show/hide table
 | |
| Illustration 2 | g00645058 |
- Remove the hydraulic tank cap (1). Remove the screen.
- Wash the hydraulic tank cap (1) in clean, nonflammable solvent. Wash the screen in clean, nonflammable solvent.
- Check the vent (2) for the hydraulic tank for cleanliness. Clean the vent for the hydraulic tank with clean, nonflammable solvent.
- Open the hydraulic oil drain (4) in order to drain the oil. Drain the oil in a suitable container.
Show/hide table
 | |
| Illustration 3 | g00645106 |
Note: The hydraulic oil tank drain (4) is located on the left side of the engine compartment. A drain hose is connected to the drain on the left side of the frame.
- Inspect the inside of the hydraulic tank. Clean the inside of the hydraulic tank.
- Remove the suction strainer inside the hydraulic tank. Install a new suction strainer in the hydraulic tank.
- Close the oil drain.
- Install the screen in the hydraulic tank.
- Refill the hydraulic tank with clean, filtered hydraulic oil. Refer to the Operation and Maintenance Manual, "Refill Capacities and Lubricant Viscosities".
- Park the machine on level ground. Check the hydraulic oil level. The oil level should be visible in the sight gauge (3) .
Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level - Check".
- Install the cap (1) for the hydraulic oil tank.
- Close the engine access cover.
Caterpillar Information System:
572R Pipelayer Engine Supplement Engine and Torque Divider - Remove
776D, 777D and 777D HAA Off-Highway Truck/Tractors Air System and Brakes Temperature Switch (Diverter Brake Oil)
CB-214D, CB-224D and CB-225D Vibratory Compactors Water Spray System Water Spray Pump
539 Knuckleboom Loader Machine Systems Stick - Remove
776D, 777D and 777D HAA Off-Highway Truck/Tractors Air System and Brakes Pressure Switch (Stop Lamp)
CB-214D, CB-224D and CB-225D Vibratory Compactors Water Spray System Emulsion Spray Pump - CB-225D Only
776D and 777D Off-Highway Truck/Tractors Power Train Pressure Control Valve (Transmission)
572R Pipelayer Power Train Transmission - Assemble
3054B Industrial Engine Exhaust Manifold - Remove and Install
572R Pipelayer Power Train Transmission - Disassemble
572R Pipelayer Power Train Torque Converter Outlet Relief Valve - Assemble
572R Pipelayer Power Train Torque Converter Outlet Relief Valve - Disassemble
Air Conditioning and Heating R134a for All Caterpillar Machines Refrigerant Compressor
CB-214D, CB-224D and CB-225D Vibratory Compactors Water Spray System Spray Bar
HH45 Harvester Head, HH55 Harvester Head, HH65 Harvester Head and HH75 Harvester Head Hydraulic System Holding System
631E Series II, 633E Series II and 637E Series II Wheel Tractor-Scrapers Air System and Brakes Accessory Drive (Air Compressor)
CS-531D, CP-533D and CS-533D Vibratory Compactors Engine Air Filter Primary Element - Clean/Replace
Air Conditioning and Heating R134a for All Caterpillar Machines Refrigerant Compressor
CS-531D, CP-533D and CS-533D Vibratory Compactors Engine Air Filter Secondary Element - Replace
824G Wheel Dozer, 825G Soil Compactor and 826G Landfill Compactor Hydraulic System Gear Pump (Fan Drive)
CS-531D, CP-533D and CS-533D Vibratory Compactors Engine Air Filter Service Indicator - Inspect
D350E and D400E Articulated Trucks Steering, Suspension, and Body Hoist Hydraulic Systems Metering Pump (Steering)
CS-531D, CP-533D and CS-533D Vibratory Compactors Engine Crankcase Breather - Clean
789C Off-Highway Truck Fan Drive Bearing and Belt Tightener Pulley - Lubricate