215 EXCAVATOR Every 2,000 Service Hours or Yearly Caterpillar

(25)Engine Valve Lash-Check-Adjust

Inlet Valve Lash - 0.38 mm (.015 inch)

Exhaust Valve Lash - 0.64 mm (.025 inch)

Resetting the valve lash is not necessary if the lash is within 0.08 mm (.003 inch) of the clearance shown above.

Use AVSpare Part Number 5P7307 Engine Turning Tool to turn the flywheel.

See the "215 Excavator Service Manual" for the valve adjustment procedure.

(26)Cooling System-Changing Coolant

Show/hide table

At operating temperature, engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only when the engine is stopped and the radiator cap is cool enough to touch with your hand. Remove the fill cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury.

All water is corrosive at engine operating temperature. Use AVSpare Cooling System Conditioner to treat either plain water or an ethylene glycol solution.

Clean the cooling system if it is contaminated, if the engine overheats, or if foaming is observed in the radiator. See "Cooling System" under "When Required."

When permanent antifreeze and water solutions are used in the cooling system, the solution should be drained and replaced Every 2,000 Service Hours or Yearly.

However, when additions of conditioner are made to the cooling system Every 250 Service Hours, the antifreeze change interval can be extended to 4,000 Service Hours or 2 Years.

1. The machine must be on level ground. The equipment must be lowered. The engine must be stopped.

2. Remove the radiator cap slowly to relieve pressure.

3. Open the radiator drain valve. Allow the coolant to drain.

4. Remove the plug from the oil cooler. Allow the coolant to drain. Install the plug and close the radiator drain valve.

Filling the Cooling System

1. Mix antifreeze and fill water to provide protection to the lowest expected outside temperature.

2. Add 1 liter (1 qt.) of cooling system conditioner, or equivalent, to the coolant.

3. To help avoid air locks, add coolant slowly at 19 liters (5 U.S. gal.) per minute or less. See "Refill Capacities."

4. Bring the coolant level to within 1 cm (1/2inch) of the bottom of the fill pipe.

5. Start and operate the engine with the radiator cap off. Add coolant, if necessary, after the level stabilizes.

6. Clean and inspect the cap. Replace the cap if the seal is damaged. Install the cap.

(27)Pump Drive-Change oil

Show/hide table

Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

1. Open the left side rear access door.

2. Remove the pump drive drain plug. Allow the lubricant to drain. Clean and install the drain plug.

3. Open the right rear access door. Remove the fill plug.

4. Remove the level plug.

5. Fill the compartment to the bottom of the level plug opening. See "Refill Capacities."

6. Clean and install the level and fill plugs. Close the access doors.

(28)Hydraulic System-Change oil and wash filler strainer

Show/hide table

Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. At operating temperature, hydraulic oil is hot and under pressure. Remove fill cap ONLY when engine is stopped and cap is cool enough to touch with your hand. Remove fill cap SLOWLY to relieve pressure.

1. Open the right side front access door. Remove the hydraulic tank fill cap slowly to relieve pressure in the tank.

2. The hydraulic tank drain is located on the right side of the machine under the upper structure.

3. Remove the drain valve plug (1). Open the drain valve (2) and allow the oil to drain.

4. Change the hydraulic oil filter elements. See "Hydraulic System" at "500 Service Hours or 3 Months."

5. Close the drain valve. Clean and install the plug.

6. Inspect the hydraulic suction hoses and clamps. Replace hoses that are swollen or cracked. Tighten all hose clamps to 11 N·m (100 lb. in.).

7. Remove the spring lockring with pliers. Remove the hydraulic tank filler strainer. Wash the strainer in clean, nonflammable solvent. Install the strainer and lockring.

8. Fill the hydraulic tank with oil. See "Refill Capacities." Replace the cap seal if it is damaged. Clean and install the cap.

9. Start the engine and operate it at low idle to fill the filters. Check for leaks. Cycle all hydraulic equipment.

10. With the machine level, position the equipment as follows:

BACKHOE - Position the bucket flat on the ground with the stick cylinder fully extended.

CLAMSHELL - Position the bucket open on the ground with the stick cylinder fully extended.

11. Stop the engine. Check the hydraulic oil level.

12. The level must be maintained at the FULL mark on the sight gauge. Close and secure the access door.