ELBOW 0028069 - 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 Advanced
Cat TDTO
Cat TDTO (TMS)
Cat DEO
Cat BIO HYDO Advanced (HEES)
Cat MTOCommercial Oils
If Caterpillar oils cannot be used, oils that meet the following oil specifications can be used in most Caterpillar hydraulic systems and in most Caterpillar hydrostatic transmission systems.
Engine oils that meet the performance requirements of one of the following oil specifications: Cat ECF-1-a, Cat ECF-2 and Cat ECF-3 The oils must have a minimum level of zinc additive of 0.09 percent (900 ppm).
Biodegradable oils that meet the performance requirements of Cat BF-2 oil specification
Oils that meet the Cat TO-4 performance requirements that have a minimum zinc additive level of 0.09 percent (900 ppm)Note: 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. ReferenceSee Operation and Maintenance Manual, "Hydraulic System Oil Filter - Replace".
Install the filler strainer.
Fill the hydraulic oil tank.ReferenceSee Operation and