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This guide is for trailer and caravan owners looking to protect their wheel bearings. The AB Tools 64mm Knott Dust Cap offers a robust steel construction to prevent dust and grit ingress, significantly extending bearing life. A potential caveat is its internal fit design, requiring precise measurement of the hub's internal diameter.
| Model Part Number | IND102 |
|---|---|
| Brand | AB Tools |
An internal fit hub cap slots *into* the hub recess rather than fitting over the outside of the hub. This requires measuring the inner diameter of the hub opening.
You need to measure the internal diameter of the recess where the cap will sit. Use a tape measure or calipers to find the precise 64mm measurement.
This cap is specifically designed for Knott hubs with a 64mm internal diameter. While it might fit other hubs with the same dimension, it is guaranteed for Knott systems.
The zinc plating provides a protective layer that resists corrosion and rust, helping to maintain the cap's integrity and appearance in various weather conditions.
While possible, painting may affect the corrosion resistance if not done properly. If you choose to paint, ensure the surface is clean and use a suitable metal primer and paint.
Wheel bearings are critical for safe wheel rotation. Contamination from dust, grit, and water can cause premature wear, leading to bearing failure, which can result in wheel detachment and serious accidents.
It's good practice to check hub caps during routine maintenance, such as before long journeys or after encountering severe road conditions (e.g., deep water, heavy dust). Ensure they are secure and free from damage.
Ensure the internal hub diameter is precisely 64mm. Re-seat the cap, tapping evenly around the edges. If the hub opening is worn or damaged, the cap may not hold securely, and the hub may need repair or replacement.
Verify the measurement of the hub's internal diameter. It must be exactly 64mm. Ensure the hub opening is clean and free from debris. Do not force the cap; if it's too tight, the hub diameter may be smaller than specified or slightly out of tolerance.
Minor surface rust can often be cleaned with a soft cloth and mild cleaner. Significant corrosion may indicate prolonged exposure to harsh environments or damage to the zinc plating. Clean thoroughly and monitor; if the corrosion compromises the seal, replacement may be necessary.
Setup:
This hub cap features an internal fit design. To install, ensure the hub's internal diameter is precisely 64mm. Clean the hub opening thoroughly. Gently tap the cap into the hub opening using a rubber mallet or a block of wood and a hammer, ensuring it seats evenly and fully.
Compatibility:
Care:
