What is the method to release the air brake lock?

[Ralph]

If the diaphragm of the sub-pump is damaged, disconnect the connecting joint, seal the pipe opening with a 1-cent coin or copper sheet, then tighten the joint. Start the air pump to release the lock. Remove the leaking pipe, block both ends of the pipe with iron or copper sheets, then tighten the pipe joint. Start the air pump to release the air brake lock. To prevent the trailer from moving uncontrollably after sudden detachment, regular inspections should be conducted to ensure correct and reliable connections and leak-free pipelines.

[Milton]

As a long-haul truck driver who frequently travels long distances, I need to release the spring brakes several times a day. The key is to first check if the air pressure gauge reads above 7 bar after safely parking; otherwise, the system remains locked and cannot be released. Then, locate a red-labeled lever or valve on the right side of the driver's seat or under the dashboard, and gently pull it toward you until you hear a 'hissing' sound, indicating the brakes are released. If the warning light remains on, it means the release failed, and you should inspect the air reservoir or lines for leaks. A relevant experience: Once on a steep slope, I rushed and pulled the lever without confirming the air pressure, causing the truck to slide and nearly leading to an accident. So remember, always wait patiently for the air pressure to stabilize before operating, and develop good habits to avoid accidents. Fatigue is especially common after long-distance driving—taking a few extra seconds to check can ensure safety.

[MaddoxFitz]

Having worked as a car mechanic for many years, I often encounter customers stuck with the parking brake release. The steps to release it are quite simple: After the vehicle is parked and the engine is turned off, check if the green light on the air pressure gauge is on, indicating sufficient pressure; then locate the lever or button, usually in a visible spot in the cockpit, and push or pull it to release, accompanied by a slight hissing sound. If it's stuck or unresponsive, it's often due to air leaks in the storage tank, dirty valves, or aging pipelines, requiring cleaning or part replacement. Related tips: I recommend car owners regularly maintain the air system, checking the filter and storage tank seals quarterly to prevent failure. If the light remains on after release, it might be a sensor issue; using a multimeter to check voltage can pinpoint the problem. Safety first—ensure the parking brake is fully released before moving the vehicle.

[McDeclan]

As a novice car enthusiast, I learned from a friend how to release the spring brake. After parking the car, confirm that the air pressure indicator is normal (green light on), then locate the small lever or switch mechanism near the steering wheel, and pull or press it firmly to release the brake. It sounds simple, but don't be careless: based on my experience, I've tried it on flat ground without issues, but forgetting to check on a slope was scary when the car moved slightly. Practicing these basic skills regularly can save you roadside assistance fees, and understanding vehicle structures is also quite interesting. Basic knowledge of the air pressure system is crucial—when the pressure is insufficient, you need to inflate it before releasing. Always ensure a safe environment when operating, and don't take risks.