Pro tips for the maintenance of combine harvesters
Pro tips for the maintenance of combine harvesters
Combine harvesters rely on a regular inspection of wear parts in the cutting systems [BV1] to ensure a smooth harvest.
In this blog post you learn
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- how to know if a wear part needs to be replaced
- what happens if you don’t replace in time
- Pro tips for all GROUP SCHUMACHER combine harvester wear parts
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1. Combine harvester wear part: Crop lifter
How to know if a crop lifter needs to be replaced:
- The crop lifters should all be aligned in one line. Checking the pre-tension is also important.
- If the skid wear is high, the crop lifter must be replaced.
- During operation, the crop lifter skid should be at the correct angle of contact with the ground. The front tip should be positioned approximately 2 cm above the ground.
What happens if you don’t replace the section in time:
If the crop lifters are excessively worn at the skid or incorrectly adjusted, they may break. Damaged crop lifters can also lose their spring tension. In the worst case, this may cause them to come loose from their mounting.
If detached or broken parts enter the machine, this can lead to serious damage and costly repairs.
Pro tip: Regularly check all installed crop lifters. This takes only a little time and ensures optimal and safe operation.
Pro tip: Regularly check all installed crop lifters. This takes only a little time and ensures optimal and safe operation.
Pro tip: Use our multi-tool to measure the wear condition of the cutting gap. On a new guard, the marking on the multi-tool should only be inserted up to the cutting edge at most. If the marking already extends into the cutting gap, the guard is worn and must be replaced.
2. Combine harvester wear part: Guard
How to know if a guard must be replaced due to wear:
- Regularly check the alignment of the guard tips to ensure that none of the guards are bent.
- Guards should have sharp cutting edges, as the cutting process works on the shear-cut principle.
- Überprüfen Sie die Schnittkanten visuell, um sicherzustellen, dass sie nicht abgerundet sind.
- The cutting gap has a wear tolerance that should be checked regularly, quickly and easily using the SCH multi-tool.
What happens if you don’t replace the section in time:
Worn guards no longer cut the crop cleanly and, in the worst case, can lead to blockages in the cutting system.
Pro tip: Use our multi-tool to measure the wear condition of the cutting gap. On a new guard, the marking on the multi-tool should only be inserted up to the cutting edge at most. If the marking already extends into the cutting gap, the guard is worn and must be replaced.
3. Combine harvester wear part: Section
How to know if the section should be replaced:
- The sections should be checked for cracks or chipping. If a section is bent, broken, or unevenly worn, it must be replaced.
- Check the serration for damage. Rounded damage on the toothed bar may be caused by spring tines that are set too low.
- Inspect the section serration. Even if the edge itself is still sharp, worn gaps between the teeth can cause the crop to be crushed or speared instead of being cut cleanly. This can result in blockages and increased power requirements.
What happens if you don’t replace the section in time:
Heavily worn sections require significantly more power and can cause vibrations. Broken sections are unable to cut the crop, which can result in striping in the field.
Pro tip: Regularly inspect not only the tooth tips of the section, but also the cutting surfaces of the spaces between the teeth, from the tooth tip to the base of the tooth. Even sections that appear sharp can be dull if the gaps between the teeth are worn or eroded.
Pro tip: After harvesting, thoroughly clean the cutting system and, in particular, the guide elements, and remove any crop residues. This significantly contributes to the service life of your cutting system.
4. Combine harvester wear part: Knife guide system – Wear plates
How to know if a wear parts needs to be replaced:
The wear plate guides the back of the section. It ensures that the section runs smoothly and in a controlled manner. If the guiding edge is damaged or worn, excessive play is created in the system, preventing the section from operating cleanly and leading to increased wear.
5. Combine harvester wear part: Knife guidance system – Roller guide
What should be considered for the roller guide?
The maintenance-free roller guides lead the section with ball bearings and low friction along the knife back and the sections. Worn roller guides often show worn or unevenly worn guide edges.
What happens if you don’t replace the roller guide in time:
The roller guide ensures optimal guidance of the section. Defective or worn components can cause noise, increased wear on other components such as guards, and reduce the service life of the overall system.
Pro tip: After harvesting, thoroughly clean the cutting system and, in particular, the guide elements, and remove any crop residues. This significantly contributes to the service life of your cutting system.
Pro tip: Make sure that the knife head is firmly seated on the head bearing. If it can still move when tightened, it must be replaced. Adhere to the specified lubrication intervals to ensure an optimal service life of the head bearing.
6. Combine harvester wear part: Head bearing
How to know if a wear part has to be replaced:
The head bearing must be centered on the knife head to ensure optimal guidance of the section.
If the knife head sits too high or too low on the head bearing, this can lead to friction and vibrations.
Wear has a significant effect not only on the bearing itself, but also on the knife head and nearby guide elements.
What happens if you do not maintain and replace wear parts in time:
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7. Combine harvester wear part: Knife drive and stroke change
You should pay attention to:
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- In case of wear, ensure that suitable and original spare parts are used for replacement.
- Check the stroke change. If it does not align properly with the guards, the cutting performance of the cutting system will be impaired. An uneven cut and knocking noises will result.
- In case of wear, ensure that suitable and original spare parts are used for replacement.
What happens if you do not maintain your knife drive or change wear parts in time:
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Pro tip: Make sure that the knife head is firmly seated on the head bearing. If it can still move when tightened, it must be replaced. Adhere to the specified lubrication intervals to ensure an optimal service life of the head bearing.
Where can you get Schumacher spare parts und support?
Buy spare parts:
You can order crop lifter, guards, sections, knives, as well as other wear parts for your combine harvester from your agricultural machinery dealer that sells original Schumacher products.
Visit our Schumacher website for the appropriate selection, or contact an agricultural machinery dealer near you.
Immediate support:
If you need support in selecting the right spare parts, you can also contact us directly. Our experts are ready to assist you with the selection.
Harvest Hotline:
Our harvest hotline is available 24 hours a day, seven days a week from July until the end of the harvest season.
Here, we answer your technical questions and assist you with your spare parts orders.