600-633-7850 Cooling Fan Blade for Komatsu WA470-3 WA450

600-633-7850 Cooling Fan Blade for Komatsu WA470-3 WA450

The 600-633-7850 / 6006337850 cooling fan blade is used for Komatsu engine cooling system applications. It is commonly referenced for WA470-3 and WA450 wheel loader applications where a negative-direction radiator fan blade is required.

This page focuses on 600-633-7850 as the main part number. Before ordering, the removed fan blade should be checked by rotation direction, mounting hole layout, fan diameter, blade count, material marking and machine serial number.

600-633-7850 Part Number Focus

The main part number for this product page is 600-633-7850. The non-hyphen search format 6006337850 may also appear in supplier listings, parts searches and maintenance records.

To keep selection accurate, this page should not be mixed with other Komatsu fan blade numbers. Similar cooling fans may look close in photos but differ in rotation direction, fan diameter, bolt hole layout, blade angle or installation clearance.

Reference Information for 600-633-7850

Why Rotation Direction Must Be Checked

The 600-633-7850 fan blade should be selected by the correct rotation direction. A wrong-direction fan may reduce airflow through the radiator and can affect engine cooling performance under heavy load.

Before replacement, compare the old fan blade with the new part by blade angle, rotation direction, mounting hole pattern, center bore and installation clearance. Do not select the fan blade by model name alone.

Common Failure Symptoms

• Cracked fan blade: aging, vibration or impact may cause cracks on the fan body or blade root.

• Abnormal noise: deformation, loose mounting or contact with nearby parts may create noise during operation.

• Engine overheating: weak airflow, wrong fan direction or radiator blockage may affect cooling performance.

• Vibration after installation: check mounting bolts, balance condition, fan hub and installation alignment.

• Blade contact marks: inspect shroud clearance, bracket position and worn engine mounts.

Troubleshooting Before Replacement

• Confirm the old fan blade number and compare it with 600-633-7850 or 6006337850.

• Check the rotation direction before ordering.

• Compare fan diameter, blade count, center bore and bolt hole layout.

• Inspect the radiator, fan shroud, pulley, belt and mounting hub for related faults.

• Check whether overheating is caused by the fan blade, radiator blockage, belt slip or coolant system problems.

Installation and Maintenance Notes

• Turn off the machine and allow the engine area to cool before replacement.

• Clean the fan mounting surface before installing the new blade.

• Tighten mounting bolts evenly according to the service procedure.

• Check clearance between the fan blade, radiator, shroud and nearby hoses.

• After installation, run the engine at low speed first and check for vibration or contact noise.

• During routine service, inspect the fan blade together with the radiator, belt, pulley and cooling shroud.

FAQ

Q: What is 600-633-7850?

600-633-7850 is an engine cooling fan blade, also searched as a radiator fan blade or cooling fan blade, for Komatsu equipment applications.

Q: Is 6006337850 the same search number as 600-633-7850?

Yes. 6006337850 is the non-hyphen search format of 600-633-7850. Both formats may appear in parts searches and supplier listings.

Q: Which Komatsu models are mainly referenced?

This fan blade is mainly referenced for Komatsu WA470-3 and WA450 applications. Other model references should be verified by old fan blade number and physical dimensions.

Q: Why is rotation direction important?

Rotation direction affects airflow through the radiator. A wrong-direction fan blade may reduce cooling performance and cause installation or overheating problems.

Q: What should be checked before ordering?

Check the old fan blade number, rotation direction, diameter, blade count, center bore, bolt hole layout and machine serial number. Clear photos and measurements are recommended.