Caterpillar Industrial Engine C4.4

Warning: This maintenance check requires trained personnel with PPE!

Note: It is not necessary to obtain a Coolant Sample (Level 1) if the cooling system is filled with Cat ELC (Extended Life Coolant).

Note: Obtain a Coolant Sample (Level 1) if the cooling system is filled with any other coolant instead of Cat ELC.

NOTICE: Always use a designated pump for oil sampling, and use a separate designated pump for coolant sampling.

Note: Level 1 results may indicate a need for Level 2 Analysis.

NOTICE: Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product.

Obtain the sample of the coolant as close as possible to the recommended sampling interval.

Use the following guidelines for proper sampling of the coolant:

Complete the information on the label for the sampling bottle before you begin to take the samples.

Battery Electrolyte Level - Check

Steps to check the battery electrolyte level

Are the hold-downs for the battery tightened?

Has the valve lash adjustment been performed?

Cooling System Coolant Sample (Level 2) - Obtain

Refer to Operation and Maintenance Manual, “Cooling System Coolant Sample (Level 1) - Obtain” for the guidelines for proper sampling of the coolant.

Obtain the sample of the coolant as close as possible to the recommended sampling interval. Supplies for collecting samples can be obtained from your Cat dealer.

Sample obtained for Level 2 analysis?

Submit the sample for Level 2 analysis.

For additional information about coolant analysis, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations” or consult your Cat dealer.

Sign off on the coolant sample collection

Engine Crankcase Breather - Clean

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

3. Remove breather (3) and O-ring seal (4).

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

5. Inspect O-ring seal (4). If the seal is damaged, install a new seal.

6. Install O-ring seal (4) and clean breather (3).

7. Slide outlet hose (1) on breather (3). Tighten hose clamp (2).

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

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 located on the lower left side of the cab behind the seat.

1. Slide the operator seat forward.

2. Slide the filter element upward.

3. Tap the air filter against the palm of one’s hand in order to remove the dirt. Do not use compressed air to clean the filter.

4. 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.