Caterpillar Excavator 345D

WARNING: Personal injury can result from hot coolant, steam and alkali.

At operating temperature, engine coolant is hot and under pressure.

Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.

Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.

Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.

NOTICE: Do not change the coolant until you read and understand the material in the Cooling System Specifications section.

NOTICE: Mixing Extended Life Coolant (ELC) with other products reduces the effectiveness of the coolant and shortens coolant life.

Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specifications for premixed or concentrate coolants.

Use only Caterpillar Extender with Caterpillar ELC.

Engine Crankcase Breather - Clean

1. Unlatch the engine hood. Raise the engine hood.

2. Loosen hose clamp (1). Disconnect outlet hose (2) from breather (3).

3. Loosen four bolts (4). Remove breather (3) and the seal.

Note: Refer to Operation and Maintenance Manual, “General Hazard Information” for information on containing fluid spillage.

4. Wash breather (3) in a clean, nonflammable solvent.

5. Inspect the seal. If the seal is damaged, install a new seal.

6. Install the O-ring seal and clean breather (3). Tighten four bolts (4) to 14 ± 3 N·m (10 ± 2 lb ft).

7. Slide hose on breather (3). Tighten hose clamp (1).

WARNING: Personal injury can result from hot coolant, steam and alkali. At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.

Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.

Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.

Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.

When a Caterpillar Extended Life Coolant (ELC) is used, an Extender must be added to the cooling system. See the Special Publication, SEBU6250, “Coolant Recommendations” for all cooling system requirements.

Use a coolant conditioner test kit in order to check the concentration of the coolant.

NOTICE: Use only Caterpillar products or commercial products that have passed Caterpillar EC-1 specification for pre-mixed or concentrated coolants.

Use only Caterpillar Extender with Extended Life Coolant.

Mixing Extended Life Coolant with other products reduces the Extended Life Coolant service life. Failure to follow the recommendations can reduce cooling system components life unless appropriate corrective action is performed.

Hydraulic System Oil (If Equipped with Fine Filtration Filter) - Change

A 5000 hour maintenance interval for hydraulic oil (change) is available. The extended interval requires S·O·S monitoring of the hydraulic oil. The interval for S·O·S monitoring is every 500 hours. The maintenance interval for the hydraulic oil filter is not changed. If S·O·S monitoring is not performed, the 2000 hour maintenance interval must be used.

Machines with hammers are not included in the 5000 hour maintenance interval. Machines with hammers must use the intervals that are listed in the Maintenance Interval Schedule. Machines that are used in severe conditions are not included in the 5000 hour maintenance interval. Machines that are used in severe conditions must use the interval in the Maintenance Interval Schedule.

Refer to Operation and Maintenance Manual, “Hydraulic System Oil - Change” for the procedure to change the hydraulic oil.

Enter the current machine hours

Was the S·O·S monitoring performed every 500 hours?

Is the machine equipped with a hammer?

Note: This engine is equipped with a belt tightener that automatically adjusts the belt to the correct tension.

1. Unlatch the engine hood and raise the engine hood.

2. Inspect the belt for wear and for cracking.

3. If the belt requires replacement, perform Step 3a through Step 3c.

a. Turn the belt tensioner in order to release the tension from the belt.