Caterpillar Hydraulic Excavator 320

Warning: Engine hood and engine hood parts can be hot while engine is running or immediately after engine shutdown. Hot parts or hot components can cause burns or personal injury.

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

Diesel Exhaust Fluid Injector - Replace

Receiver Dryer (Refrigerant) - Replace

10000 Hourly Hydraulic Excavator Maintenance: DEF Manifold Filters - Replace

Sign off on the 5000 Hourly Hydraulic Excavator Maintenance

Diesel Exhaust Fluid Filter - Replace

Open the Diesel Exhaust Fluid (DEF) compartment.

Ensure that the area around the DEF filter is clean and free from dirt. The DEF filter threaded cap and the filter element are a combined assembly.

Remove the protective cover (1) from DEF pump housing (2).

Remove the DEF filter assembly (3) and discard.

Install a new DEF filter assembly into the DEF pump housing.

Tighten the filter assembly to 10 N·m (88.5 lb in). Install the protective cover.

Turning on the power will automatically prime the DEF system.

Sign off on the 1500 Hourly Hydraulic Excavator Maintenance

Fumes Disposal Filter Element - Replace

Air Conditioner/Cab Heater Filter (Recirculation) - Inspect/Replace

NOTICE: An air recirculation filter element plugged with dust will result in decreased performance and service life to the air conditioner or cab heater.

To prevent decreased performance, clean the filter element, as required.

The air conditioner filter is on the lower left side of the cab behind the seat.

1. Slide the operator seat forward.

3. Slide the filter element upward.

4. Tap the air filter to remove the dirt. Do not use compressed air to clean the filter.

5. After you clean the filter element, inspect the filter element. If the filter element is damaged or badly contaminated, use a new filter element. Make sure that the filter element is dry.