Red Seal Transport Trailer Technician Practice Exam

What is the procedure for checking trailer wheel bearings?

1. Inspect for an even tire wear pattern

2. Check for excessive play and lubricant leaks

3. Listen for grinding sounds while driving

4. Feel for vibrations while towing

The correct answer is: Check for excessive play and lubricant leaks

Checking trailer wheel bearings is a critical maintenance task that helps ensure the safe operation of the trailer. The proper procedure for this involves examining for excessive play and lubricant leaks. Excessive play in the wheel bearings indicates that there may be wear or damage to the bearing surfaces, which could lead to catastrophic failure while driving. By checking for this, a technician can identify potential issues before they become serious problems. Additionally, inspecting for lubricant leaks is crucial, as proper lubrication is essential for the bearings to function efficiently and long-lasting. Loss of lubricant can lead to overheating and eventual bearing failure. Addressing these factors during inspection allows for timely repairs and maintenance, which enhances safety and performance while towing a trailer. This systematic approach differs from merely assessing tire wear patterns, listening for sounds, or sensing vibrations, as these methods may not directly pinpoint issues with the wheel bearings themselves.