3CX, 4CX
The slew rack is a key component of the slew mechanism in older backhoe loaders. The pinion gear travels along its teeth, causing the backhoe arm to slew. If you hear loud "cracking" or metallic grinding during slewing, the slew is jerky, imprecise, or gets stuck at a certain point, these are classic symptoms of a worn or broken tooth. Ignoring the problem leads to the destruction of the pinion gear and a complete loss of the slew function.
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High Material Strength
Resistant to extreme loads
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Precise Gearing
Quiet operation and long life
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Perfect Fit
Guaranteed hassle-free installation
The accuracy and quality of materials guarantee long and trouble-free use without the need for frequent replacement.
The rack is fully adapted to work with the original pinion gear and kingpost housing, ensuring a consistent repair.
The GX-AFTER brand is a proven and safe alternative that offers quality comparable to original parts at a much better price.
The slew rack and pinion gear wear out evenly. Installing a new rack with an old, worn pinion will lead to its immediate destruction. These components are always replaced as a set.
An overhaul of the slew mechanism is the perfect time to replace the wear pads. This will ensure that all play is eliminated and the entire mechanism operates smoothly.
After installation, generously grease the teeth of the rack and pinion. Use high-quality grease, such as HYPTRON, and regularly check the lubrication status.
Answer: Yes, this is very likely. Loud noises and jamming most often indicate broken teeth on the rack or its mating pinion gear.
Question: Can I replace just the rack without the pinion gear?Answer: It is highly not recommended. These two components work together and mesh during operation. Installing a new rack on an old pinion will cause a mismatch and very rapid destruction of the new part.
Question: What is the main cause of slew mechanism failure?Answer: The most common causes are a lack of regular lubrication, which leads to seizure and breaking of teeth, and operating with excessive play caused by worn kingpost wear pads.
If you are unsure whether the selected product is suitable for your machine, contact us and we will help you choose the right part and provide practical advice in minutes.
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