GROMMET 8T3440 - Caterpillar

The machine must be level, with the bucket lowered with slight down pressure, the parking/secondary brake applied and the engine stopped and cool. 1. Loosen the radiator cap slowly to relieve any pressure. Remove the cap. 2. Open the radiator drain valve and drain all the coolant from the engine and the radiator.3. Close the drain valve.4. Mix the coolant solution, (see the "Refill Capacities" chart) to provide protection from freezing to the lowest expected outside temperature.5. Add the coolant slowly, 20 liters (5 U.S. gallons) per minute or less, to the proper level. 6. Add 2 liters (2 quarts) of cooling system conditioner, to provide a 3% concentration of conditioner in the system.7. With the radiator cap removed, start the engine. Allow the coolant to warm and the coolant level to stabilize. 8. Observe the coolant level. Maintain the coolant level to within 1 cm (1/2 inch) of the bottom of the fill pipe.9. Stop the engine. Add more coolant if necessary.10. Inspect the radiator cap gasket. Replace it, if it is damaged. Install the radiator cap.Hydraulic System
Change Oil
Hot oil and components can cause injury. Do not allow hot oil or components to contact the skin.
The machine must be level and the oil warm. Lower the bucket with slight down pressure. Apply the parking/secondary brake and stop the engine. 1. Move the hydraulic controls to help relieve the system pressure. 2. Remove the fill cap slowly to relieve the pressure. 3. Remove the remote tank drain plug. 4. Install a 1 inch NPT pipe nipple (Caterpillar Part Number 6B3156) to unseat the drain valve.
Install the drain pipe nipple only finger tight until the oil starts to drain. Do NOT force the pipe nipple into the valve. This will damage the drain valve and cause leakage.
5. Allow the oil to drain. Change the filter element, see the topic "Hydraulic System" under "Every 500 Service Hours or 3 Months." 6. Remove the fill screen.
When using pressure air, wear a protective face shield and protective clothing. The maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes.Use all cleaning solutions with care.
7. Clean the fill screen in a clean, nonflammable solvent. Shake or blow dry.8. Install the fill screen and the retaining ring. 9. Inspect the drain plug seal. Replace the seal, if it is damaged. Clean and install the tank drain plug. 10. Inspect all suction hoses and hose clamps. Replace any cracked or swollen hose. Tighten all hose clamps.11. Fill the tank. See the "Refill Capacities" chart. Install the fill cap.12. Start the engine. Operate the controls to circulate the oil. 13. Observe the sight gauge. Add oil, if necessary, to bring the oil level above the ADD mark.Differentials and Final Drives
Change Oil
Hot oil and components can cause injury. Do not allow hot oil or components to contact the skin.
1. Position each wheel in turn with the final drive drain plug at the lowest point. 2. Remove each final drive drain