AB Tools Trailer Brake Expander - Pair
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Product Information
Full details
This guide is for owners of Alko trailer and caravan brake systems needing to replace or maintain their braking components. The key benefit is ensuring reliable trailer braking performance through durable, zinc-plated steel expanders that fit common Alko auto-reverse systems. A potential caveat is that these are specifically for Alko auto-reverse systems and may not be compatible with other brands or types.
All features
| Model Part Number | BS175_Pair |
|---|---|
| Brand | AB Tools |
Extended Product Information
FAQs
Are these expanders suitable for all trailer brake systems?
No, these are specifically designed for Alko auto-reverse trailer and caravan brake systems.
What brake shoe sizes do these expanders fit?
They are suitable for both 200 x 50mm and 230 x 60mm brake shoe sizes.
How often should I check my trailer brakes?
It is recommended to inspect your trailer's braking system at least annually, or before long journeys, to ensure safety and performance.
What does 'auto-reverse' mean for trailer brakes?
Auto-reverse systems prevent the trailer brakes from being applied when the towing vehicle is reversing, usually by a mechanism activated by the jockey wheel.
Can I install these myself?
Installation requires basic mechanical knowledge and tools for brake system disassembly. If you are unsure, it is best to consult a professional.
What is the benefit of zinc plating?
Zinc plating provides a protective layer that resists rust and corrosion, increasing the lifespan of the metal components, especially when exposed to moisture.
Troubleshooting
Brakes not engaging or weak braking
Check brake shoe adjustment, cable tension, and the condition of the brake shoes themselves. Ensure expanders are correctly installed and functioning.
Trailer brakes engage when reversing
This indicates an issue with the auto-reverse mechanism, not necessarily the expanders themselves. Inspect the jockey wheel or lever mechanism that triggers the auto-reverse function.
Rust or corrosion visible on expanders
While zinc plating offers protection, severe environmental exposure can lead to rust. If extensive, replacement might be necessary to maintain braking integrity.
Pros and Cons
Pros
- Durable steel construction for longevity.
- Zinc plating provides excellent rust and corrosion resistance.
- Designed for common Alko auto-reverse systems.
- Compatible with two popular brake shoe sizes (200x50mm and 230x60mm).
- Direct replacement for original Alko expanders.
Cons
- Only compatible with Alko auto-reverse braking systems.
- Requires disassembly of the brake drum for installation.
- Performance is dependent on the overall condition of the braking system (shoes, cables, etc.).
- Not suitable for non-Alko systems or non-auto-reverse mechanisms.
Setup, Compatibility & Care
Compatibility: Ensure your trailer is equipped with an Alko auto-reverse braking system. These expanders are designed to fit Alko drums for brake shoe sizes of 200 x 50mm and 230 x 60mm. Verify your existing brake shoe dimensions before purchase.
Setup: Installation requires opening the brake drum. This typically involves removing the wheel, then the brake drum itself. The expanders are located centrally within the brake assembly and are responsible for actuating the brake shoes. Proper adjustment of the brake shoes and cables is essential after installation for optimal braking performance.
Care: As these components are internal and protected by the brake drum, they require minimal direct care. However, it is recommended to periodically inspect the overall brake system, including brake shoes, drums, and cables, for wear and tear. The zinc plating offers significant protection against rust. Ensure that no excessive moisture or debris enters the brake assembly during maintenance.