Komatsu Wheel Loader WA320-8

Warning: This maintenance check requires trained personnel with PPE!

Position one final drive so that the oil fill/drain plug is at the bottom.

Did you position the final drive correctly?

Use an 8 mm allen wrench. Remove the oil plugs. Allow the oil to drain into a suitable container.

Did you successfully drain the oil?

Check the drained oil for large metal chips or a significant number of metal particles.

Did you find any large metal chips or a significant number of metal particles in the oil?

Clean the plugs and inspect the plugs. Replace a worn plug or a damaged plug.

Did you clean and inspect the plugs successfully?

Warning: Fingers can be burned from hot pins and bushings. The pins and bushings in a dry joint can become very hot. It is possible to burn the fingers if there is more than brief contact with these components.

Use the recommendations to extend the life of the undercarriage. Use the recommendations to avoid excessive downtime.

During the machine operation, listen for unusual squeaking and for unusual squealing. This noise can indicate a dry joint.

Check the machine for dry joints weekly. Check for dry joints immediately after machine operation.

After machine operation, lightly touch the end of each track pin or bushing. Touch the track pin or the track bushing with the back of your hand. Make a mark on any dry track pin joint that is hot to the touch.

Consult the Custom Track Service expert at any Cat dealer if you detect dry joints or leaks. The Custom Track Service expert at the Cat dealer can perform track inspection.

Sign off on the 50 Hourly Skid Steer Loader Maintenance

Engine Crankcase Breather - Replace

Note: Only applies to engines with aftertreatment.

Open the engine access door. Refer to Operation and Maintenance Manual, “Access Doors and Covers”.

Tilt the radiator upward. Refer to Operation and Maintenance Manual, “Radiator Tilting”.

The breather is located in the engine compartment on the right-hand side of engine. There is cap on the breather and a replaceable element inside.

Note: This service may be performed without removing the housing from the engine.

Remove the breather cap and remove the filter element.

Note: The C2.2 and C3.3B are equipped with cap on bottom portion of the canister. Use a wrench to remove the breather cap. The C3.8 is equipped with cap on top of canister, remove cap by applying downward pressure on the cap while turning.

Clean the housing and the cap for the breather.

Cooling System Coolant Extender (ELC) - Add

When a Cat Extended Life Coolant is used, an extender must be added to the cooling system periodically.

Open the engine access door and raise the radiator guard. Refer to Operation and Maintenance Manual, “Access Doors and Covers”.

Note: The radiator cap may be located either on the left side of the radiator (C3.3B and C3.8 engines) or the right side of the radiator (C2.2 engine).

Slowly loosen the radiator cap in order to relieve system pressure. Remove the radiator cap.

If necessary, drain enough coolant from the radiator in order to allow the addition of the coolant additive.

Add 0.17 L (0.18 qt) of cooling system additive.

Inspect the radiator cap and the gasket. If the cap or the gasket is damaged, replace the cap. Install the radiator cap.

Check the coolant level in the sight gauge on the radiator. Maintain the coolant level to the top of the sight gauge with the radiator in the LOWERED position.

Note: The cover for the cab air filter is on the lefthand side of the machine behind the cab.

1. Rotate the latch to free the cover from the ductwork. Do NOT use excessive force. Lift on the cover and remove the cover.

1. Turn the thumb screws until the thumb screws are free from the duct. Remove the cover.

2. Replace the element if the element is damaged or if the element seal is damaged. Replace the element if the air conditioner performance is low.