CLAAS LEXION 8900 Combine Harvester – Exhaust and Cooling System Cleaning Instructions

These instructions detail the process for cleaning the diesel engine, exhaust system, and cooling system of a CLAAS LEXION 8900-5500 LEXION combine harvester.

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Note: If you operate in very dry or dusty conditions, you should clean these systems several times a day. Areas with oil or dust buildup may indicate a leak.

Safety Warnings

WARNING: Hot Surfaces – Risk of Burns

• Wait until all components have cooled down before proceeding.
• Open the engine cover and shredding screen only when the components are cool.
• Keep away from hot surfaces and avoid contact.

CAUTION: Cleaning with Pressurized Water or Compressed Air – Risk of Injury

• Cleaning with pressurized water or compressed air can cause swirling dirt particles, which can damage eyes, skin, and airways.
• Wear protective clothing, gloves, safety glasses, face protection, and a mask during cleaning.
• Avoid hazardous areas during cleaning.

Cleaning Instructions

1. Switch off and secure the machine.
2. Inspect the diesel engine, generator, exhaust system, cooling system, and engine performance for leaks and dirt.
   • Have any leaks repaired by a qualified specialist repair shop.
   • Remove contamination, preferably using compressed air.
   • Prevent dust from entering the generator when using compressed air.
   • If compressed air cleaning is insufficient, clean with water and a suitable cleaning agent.
3. Clean the inside of the cooling system:
   • Remove both spring clips (1).
   • Open both locks (2).
   • Open the rotating sieve using the handle (3).
   • Clean components (4) to (8) with compressed air.
     • Clean the condenser (4) with a maximum pressure of 5 bar.
     • Do not damage the slats of components (4) to (8).
   • Check if the rotor (9) runs freely; replace the bearings if necessary.
   • Close the rotor sheave using the handle (3).
   • Close both locks (2) and secure them with the spring clips (1).

Component Descriptions

• 4: Condenser
• 5: Fuel Cooler
• 6: Intercooler
• 7: Oil Cooler
• 8: Water Cooler

For further repair information, refer to the CLAAS troubleshooting guide.