Trailer Wheel Bearings & Brakes Explained | Maintenance Guide

Trailer wheel bearings and brakes are one of the most common causes of breakdowns — and most failures are completely avoidable.
In this video, we strip everything back to basics and show you exactly how trailer bearings and braking systems work, and how to maintain them properly.

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I’m visiting Davidson Engineering in western Victoria to talk with Rod Davidson, who repairs and rebuilds trailers every week. Together, we walk through wheel bearings, seals, grease, axle setup, and the real differences between hydraulic and electric trailer brakes — using plain language and real hardware, not theory.

This video is ideal for anyone towing trailers, horse floats, caravans, farm equipment, or machinery, especially on rural roads where a failure can cost you serious time and money.

We cover:
• How wheel bearings actually work
• Why incorrect adjustment destroys bearings
• How much grease is enough (and why more isn’t better)
• Electric vs hydraulic trailer brakes — pros and cons
• Common mistakes that cause brake failure
• What to check before towing any trailer

If you tow anything regularly, this knowledge will save you money, downtime, and stress.

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Filmed at: Davidson Engineering, Western Victoria
Topics: Trailer bearings, axle setup, grease, seals, electric brakes, hydraulic brakes, brake controllers, rural towing safety

00:00 Why trailer bearings and brakes matter
01:01 The most common trailer failures explained
02:10 How wheel bearings actually work
03:45 Correct bearing adjustment (and why most fail)
05:03 Tools needed for bearing maintenance
06:52 Removing worn bearing cups safely
08:49 Installing new bearing cups correctly
09:29 Greasing bearings properly (how much is enough)
11:23 Seals, dust caps, and contamination prevention
12:44 Reassembling the hub step-by-step
15:26 Trailer brakes explained: lazy vs braked axles
16:35 Hydraulic trailer brakes — how they work
17:44 Electric trailer brakes explained simply
18:46 Brake controllers and correct adjustment
19:53 Common brake failures people cause themselves
21:38 Final checks before towing any trailer

trailer wheel bearings, trailer brake maintenance, axle bearings explained, trailer servicing
electric trailer brakes, hydraulic trailer brakes, brake controller setup, trailer safety checks
bearing preload, grease contamination, seal failure, brake adjustment, towing reliability
australian trailer maintenance, rural towing australia, farm trailers australia, caravan servicing australia