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How to operate the 4.2-meter air brake?

2 Answers

EleanorAnn

07/24/25 8:28pm

First, gradually and lightly press the brake pedal to one-fourth to one-sixth of its travel and hold it steady. Once the braking effect is achieved, slowly and sequentially release the pedal. Gradually and sequentially press the brake pedal to one-third to one-half of its travel and hold. After the speed has significantly decreased, press further until the vehicle comes to a complete stop, then slowly release the pedal.

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Hailey

08/11/25 11:09am

I've driven this 4.2-meter truck for years and am quite proficient with air brake operation. Before starting, always check the air pressure gauge - never move if it's below 6 bar. Start the engine and wait a few minutes for the pressure to build up. When driving, gently press the brake pedal without sudden force to avoid wheel lockup, especially being extra cautious on slippery roads. When parking, use the air parking brake to lock the wheels, and on slopes I always add wheel chocks as an extra precaution against rolling. Before shutting down, release excess air pressure to protect the air compressor. Remember to check air hose connections monthly for leaks - safe driving is paramount. From experience, gentle operation extends system life. I always perform pre-trip inspections to avoid breakdowns and delays on the road.

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