This listing is for a single replacement brake drum hub, ideal for replacing worn, damaged, or cor...This listing is for a single replacement brake drum hub, ideal for replacing worn, damaged, or corroded brake drums. It is designed to fit brake drums with a casting reference of 4897. This drum is suitable for most Indespension trailers over 2900kg, excluding triple axle trailers. It features a 5 stud wheel fitment with a 6.5" (165.1mm) PCD and requires a 65mm hub cap. The drum is designed for use with M16 wheel studs and has a 230mm internal drum diameter (260mm overall diameter). Please note that identifying the correct brake drum often requires removing the existing one, as variations in bearing sizes and offsets exist even for drums of the same size. The casting reference number, usually found on the inside or outside of the drum, is the easiest way to identify the correct part. If the casting numbers cannot be matched, accurate measurements with vernier calipers are necessary, as even small differences of less than 1mm can affect fitment. Brakes are a critical safety system, so ensure the new part matches the old one precisely before installation.
This guide helps owners of Indespension trailers (over 2900kg, excluding triple axle trailers) understand, install, and maintain the AB Tools Trailer Brake Drum. The key benefit is a direct replacement for worn or damaged brake drums, ensuring safe and reliable braking performance. A key caveat is the importance of precise measurements and matching the existing drum's specifications before installation, as variations can affect fitment.
All features
Model Part Number
4897
Brand
AB Tools
Extended Product Information
FAQs
What trailers is this brake drum compatible with?
This brake drum is designed for most Indespension trailers over 2900kg, excluding triple axle trailers.
How do I identify the correct replacement brake drum?
The easiest way is to match the casting reference number (usually 4897) found on the inside or outside of the drum. If the casting numbers don't match, accurate measurements are necessary.
What tools do I need for installation?
You'll need a lug wrench, jack, jack stands, and potentially a brake drum puller.
Can I use this drum with different wheel stud sizes?
This drum is designed for use with M16 wheel studs.
What is the PCD of this brake drum?
The PCD (Pitch Circle Diameter) is 6.5" (165.1mm).
What should I do if the drum doesn't fit?
Double-check measurements and the casting number. Ensure all components are clean and correctly aligned. Consider professional help if issues persist.
Where can I find the casting reference number?
The casting reference number (usually 4897) is typically located on the inside or outside of the brake drum.
Troubleshooting
Brakes feel weak or ineffective.
Check the brake shoes for wear and the brake drum for damage. Adjust or replace components as needed.
Brake drum overheats.
Check for binding brakes or a dragging brake shoe. Inspect and lubricate the components.
Difficulty installing the brake drum.
Ensure all components are clean, and the drum is correctly aligned. Use a drum puller if necessary.
Noise or squealing from the brakes.
Inspect for contamination, worn brake shoes, or damaged brake drum. Replace or clean the relevant parts.
Pros and Cons
Pros
Direct replacement for damaged or worn brake drums.
Ensures safe and reliable braking performance.
Specifically designed for Indespension trailers over 2900kg (excluding triple axle trailers).
Features a common 5-stud wheel fitment.
Durable construction for long-lasting performance.
Cons
Requires matching the existing drum's specifications, including the casting reference (4897).
May require measurement with vernier calipers if casting numbers cannot be matched.
Not compatible with triple axle trailers.
Installation requires mechanical knowledge and tools.
Variations in bearing sizes and offsets can affect fitment.
Setup, Compatibility & Care
Setup
Preparation: Gather necessary tools, including a lug wrench, jack, jack stands, and possibly a brake drum puller.
Wheel Removal: Safely raise the trailer and secure it with jack stands. Remove the wheel.
Drum Removal: Remove the old brake drum, which may require a puller if it's stuck. Note any shims or washers.
Inspection: Inspect the brake shoes and other brake components for wear or damage. Replace if necessary.
Installation: Install the new AB Tools brake drum, ensuring it fits flush. Reinstall any shims or washers.
Wheel Reattachment: Mount the wheel and torque the lug nuts to the manufacturer's specifications.
Compatibility
Designed for Indespension trailers over 2900kg (excluding triple axle trailers).
5-stud wheel fitment with a 6.5" (165.1mm) PCD.
Compatible with a 65mm hub cap and M16 wheel studs.
Requires a casting reference of 4897 for proper fitment. Verify before installation.
Care
Regular Inspections: Check for wear, cracks, or damage to the brake drum and related components.
Cleaning: Remove debris and corrosion regularly.
Brake Shoe Check: Ensure brake shoes are in good condition and adjust them as needed.
Professional Servicing: Consider professional inspection and servicing for optimal performance and safety.