You are inspecting the tires of a wheel loader rated for a maximum pressure of 650 kPa. The manufacturer's recommended inflation is 620 kPa. During your pre-shift check, you measure the pressure in all tires at 520 kPa. What is the impact of this under-inflation on loader operation, and what should you do?

Question: You are inspecting the tires of a wheel loader rated for a maximum pressure of 650 kPa. The manufacturer's recommended inflation is 620 kPa. During your pre-shift check, you measure the pressure in all tires at 520 kPa. What is the impact of this under-inflation on loader operation, and what should you do?

Answer options:

• Under-inflation improves traction on loose surfaces; proceed with caution. ✅ Under-inflation can cause excessive heat buildup and premature tire wear; inflate to 620 kPa before operation.
• Under-inflation only affects fuel efficiency slightly; proceed and monitor pressure during the shift.
• Under-inflation provides a softer ride, reducing operator fatigue; no immediate action needed.

Correct answer: Under-inflation can cause excessive heat buildup and premature tire wear; inflate to 620 kPa before operation.

Explanation: Under-inflated tires on a wheel loader significantly increase the risk of tire failure due to excessive heat buildup and can lead to premature wear of the tire structure. It also negatively impacts stability, fuel efficiency, and lifting capacity. As per manufacturer guidelines and safety standards, tires must be inflated to the recommended pressure (620 kPa in this case) before operation to ensure safe and efficient performance.