Caterpillar Caterpillar Excavator 320D 320D

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.

Obtained 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 submitted 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

Obtained a sample of the engine oil from the engine oil sampling valve located on the engine oil filter housing?

Final Drive Oil Sample - Obtain

Positioned the final drive so that oil drain plug is at the bottom?

Obtained a sample of the final drive oil through the hole for the oil level plug?

Fuel System Primary Filter (Water Separator) Element - Replace

Opened the rear access door on the left side of the machine?

Inspect the belts for wear and cracking

Measure the deflection of the belt

Check if the belt tension is correct

Check if the belt is worn or frayed

Check if the belt adjustment is correct after 30 minutes of operation

Air Conditioner Belt (If Equipped)

Check if the V-belt is tensioned correctly

Measure the deflection of the V-belt

Cooling System Coolant Sample (Level 1) - Obtain

Note: It is not necessary to obtain a Coolant Sample (Level 1) if the cooling system is filled with Cat ELC (Extended Life Coolant). Cooling systems that are filled with Cat ELC should have a Coolant Sample (Level 2) that is obtained at the recommended interval that is stated in the Maintenance Interval Schedule.

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

• Commercial long life coolants that meet the Caterpillar Engine Coolant Specification -1 (Caterpillar EC-1)

• Cat Diesel Engine Antifreeze/Coolant (DEAC)

• Commercial heavy-duty coolant/antifreeze

NOTICE: Always use a designated pump for oil sampling, and use a separate designated pump for coolant sampling. Using the same pump for both types of samples may contaminate the samples that are being drawn. This contaminate may cause a false analysis and an incorrect interpretation that could lead to concerns by both dealers and customers.

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

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.