GASKET 2B2190 - Caterpillar

Cooling System
Change the Coolant
At operating temperature, the engine coolant is hot and under pressure.Steam can cause personal injury.Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand.Remove the fill cap slowly to relieve pressure.Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.
All water is corrosive at engine operating temperatures. Use a Caterpillar coolant conditioner element to treat either plain water or ethylene glycol solution.Do not use Caterpillar coolant conditioner elements with Dowtherm 209 Full-Fill coolant. Follow recommendations provided with Dowtherm 209 Full-Fill coolant.If the machine is to be shipped to, or stored in, an area with temperatures below 0°C (32°F), the cooling system must be protected to the lowest expected outside temperature.Clean the cooling system if it is contaminated, if engine overheats or if foaming is observed in the radiator.
1. Open the radiator cap access door. Remove the cap slowly to relieve pressure. 2. Open the drain valve and allow the coolant to drain. Drain valve located under the machine radiator.3. Close the drain valve. Fill the system with cleaning solution. Use a commercially available cleaner or 1 kg (2 lb) sodium bisulfate per 38 liters (10 gal) of water as a cleaner.4. Start and operate the engine for 1/2hour. Stop the engine and drain the cleaning solution.5. Flush the system, with the engine stopped, with water until the draining water is clear.6. Close the drain valve. Fill the system with a neutralizer. Use a commercially available neutralizer or 250 grams (1/2lb) sodium carbonate crystals per 38 liters (10 gal) of water.7. Operate the engine for 10 minutes. Stop the engine and drain the neutralizer.8. Flush the system, with the engine stopped, until the draining water is clear. Close the drain valve.9. Fill the system with clean water and operate the engine for five minutes. Stop the engine and drain the water.10. Repeat step 9 several times, if necessary, until the drained water is clear.11. Mix antifreeze coolant solution to provide protection to the lowest expected outside temperature.12. Add .9 liter (1 qt) of Caterpillar cooling system conditioner, or equivalent, to the coolant.13. To avoid air locks, add coolant slowly at 19 liters (5 U.S. gal) per minute or less. See "Refill Capacities."14. With the radiator cap off, start and operate the engine. When the coolant level stabilizes, add coolant, if necessary, to within 1 cm (1/2 inch) of the bottom of the fill pipe.15. Replace the cap if the gasket is damaged. Install the cap.Close the access door.Pump Drive
Change Oil
Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.
Overfilling can cause overheating of the pump drive.
1. Open the right side rear access door. 2. Remove the pump drive drain plug. Allow the oil to drain. Clean and install the drain plug. 3. Open the right rear access door. Remove the oil fill plug. 4. Remove the oil level