STEP AS 2357696 - Caterpillar

Lubricants
Approved hydraulic oil must be used to obtain the 4000 hour hydraulic oil change. Refer to the list that follows for approved oils.Caterpillar Hydraulic Oils
"Cat HYDO"
TDTO
Hydraulic environmental ester synthetic (HEES)
MTOCommercial Oils
Diesel engine oils (Heavy Duty) with a minimum zinc content of 900 ppm can be used. Acceptable commercial oils are identified by the American Petroleum Institute trademark ("API"). Refer to the list that follows for acceptable types of hydraulic oils.
CF
CF-4
CG-4
CH-4Note: Industrial hydraulic oils are not recommended for the hydraulic systems of Caterpillar machines. Industrial hydraulic oils are more likely to allow corrosion and industrial hydraulic oils are more likely to allow excessive wear.Change the Hydraulic Oil
At operating temperature, the hydraulic tank is hot and under pressure.Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Operate the machine in order to warm the oil.Park the machine on level ground. Lower the bulldozer blade to the ground and apply slight downward pressure. If equipped, lower the ripper to the ground. Engage the parking brake and stop the engine.
Illustration 1 g01355295
Right side of cab
Remove hydraulic tank filler cap (1) slowly in order to relieve any pressure.
Wash the filler strainer and the filler cap in a clean nonflammable solvent.
Use a 126-7914 Oil Drain Coupling and attach a 1 inch hose. Make sure that enough of the swivel hose bypasses the track assembly and fills into a suitable container.
Remove oil drain plug (3) which is located under the right fender of the machine.
Install the swivel hose into the drain plug opening.
Rotate the swivel hose clockwise in order to open the internal drain valve. Allow the oil to drain into a suitable container.
Remove the swivel hose. The internal drain valve for the hydraulic tank will close.
Clean the drain plug and install the drain plug. Tighten the drain plug to a torque of 68 7 N m (50 5 lb ft).
Change the hydraulic system filter. Reference: See Operation and Maintenance Manual, "Hydraulic System Oil Filter - Replace".
Install the filler strainer.
Fill the hydraulic oil tank. Reference: See Operation and Maintenance Manual, "Lubricant Viscosities and Capacities (Refill)" for additional information.
Inspect the filler cap gasket. Replace the gasket if damage or wear is evident.
Install the filler cap.
Start the engine. Operate the engine for a few minutes.
Illustration 2 g01142156
Maintain the oil level to the "FULL" mark in sight gauge (2). Add oil, if necessary.
Stop the engine.