HOSE A 0305419 - Caterpillar

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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: If the hydraulic oil is not being monitored by the Caterpillar S O S Oil Analysis program or an equivalent oil sampling program, change the hydraulic oil at every 2000 service hour interval.
Illustration 1 g00440444
The drain for the hydraulic tank is located under the hydraulic tank. The drain is ahead of the right tractor wheel. Note: The machine must meet the following conditions before you change the hydraulic tank oil.
The machine must be level.
The parking brake must be applied.
The hydraulic oil must be warm.
The transmission control must be in NEUTRAL.
The bowl must be lowered.
Illustration 2 g00440583
The hydraulic oil filler cap (3) is located on top of the hydraulic tank.
Loosen the hydraulic oil filler cap in order to relieve any pressure in the tank. You should clean the cap before you remove the cap. This cap is a locking cap. You need to remove the padlock if a padlock is on the cap. Raise the lever (4) in order to engage the lug. Turn the cap counterclockwise in order to remove the cap. Remove the cap slowly in order to relieve the air pressure.
Remove the drain plug (1) which is located at the bottom of the hydraulic tank.
Open the tank drain valve (2). Allow the oil to drain into a suitable container.
Change the hydraulic system filters. See Operation and Maintenance Manual, "Hydraulic System Oil Filter - Replace" for further information.
Close the drain valve. Clean the drain plug. Install the drain plug.
A screen is located under the oil filler cap (3). Remove the oil filler cap. Remove the screen.
Wash the screen in clean, nonflammable solvent. Inspect the screen for damage. Replace the screen if the screen is damaged.
Install the screen.
Fill the hydraulic tank to the proper level. Refer toOperation and Maintenance Manual, "Lubricant Viscosities" for further information. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for further information.
Clean the cap. Inspect the cap for damage to the seal. Replace the seal if the seal is damaged.
Install the oil filler cap.
Start the machine. Run the machine at a low idle. Check the hydraulic oil level. The oil level should be above the "ADD" level in the sight gauge. Add oil if it is necessary.Note: The oil must be free from bubbles. If there are bubbles in the oil, then air is entering the hydraulic system. Inspect the suction hoses and the clamps.
Stop the engine. If necessary, tighten any loose clamps and any loose connections. Replace any damaged hoses.