How to Deal with Rear Wheel Locking on Wuling Hongguang?
4 Answers
Rear wheel locking can be resolved by releasing the handbrake, using a spare tire, or simply kicking the sidewall of the tire a few times. To prevent locking issues, an anti-lock braking system (ABS) can be installed. Below is an introduction to the anti-lock braking system: 1. Definition: The anti-lock braking system, abbreviated as ABS, functions by automatically controlling the braking force during vehicle braking to prevent wheel lock-up, keeping the wheels in a state of rolling and sliding (with a slip ratio of about 20%), thereby ensuring maximum traction between the wheels and the road. 2. Classification: ABS can be categorized by manufacturer and by the number of control channels.
I've repaired quite a few minivans. For the Wuling Hongguang's rear wheel locking up, it's mostly due to a stuck handbrake cable or a rusted/seized brake caliper. First, try releasing and pulling the handbrake back and forth about ten times—sometimes the jammed cable can reset. If that doesn't work, lightly tap the rear wheel's brake drum with a hammer to loosen the rusted brake shoes. Never force it open if it remains stuck, as this will wear out the tire and require replacing the entire brake system. If possible, remove the tire to inspect the caliper piston; replace it if severely rusted, and promptly change the handbrake cable if it's stuck. Remember not to park with the handbrake engaged immediately after washing the car, as water entering the caliper can cause rust. Avoid using the handbrake for parking longer than three days.
Sudden rear wheel lock-up is really dangerous. I once experienced it while driving a Wuling in the rain. Immediately turn on the hazard lights and pull over, then repeatedly release and pull the handbrake to try and free it. If the wheels lock up while parked, try shifting into first gear and gently moving the car back and forth. If the caliper piston is rusted and stuck, it needs to be disassembled, polished, or replaced with new parts—a repair shop can handle this in about half an hour. Regular maintenance should include checking if the drainage holes in the rear brake drums are clear, as accumulated water can corrode the components. After washing the car, drive at least a few kilometers before parking to allow the brake heat to evaporate any moisture. When towing, remember to use a flatbed truck—forcing a tow can ruin the brake system.
Rear wheel lock-up in vans is not uncommon. First determine whether it's a single-side or both-sides lock-up. Single-side issues are often caused by wheel cylinder problems, while both-sides usually indicate parking brake cable issues. As an emergency measure, pouring warm water on the brake drum can help release it through thermal expansion. Never use iron rods to forcibly pry it open, as this can damage the vehicle and is dangerous. For DIY repairs, remove the tire to check if the parking brake cable retracts smoothly. If the wire rope is stuck, spray rust remover. If brake pads are stuck, gently tap them off and clean the rust. Wear gloves for safety during operation. If lacking proper tools, it's recommended to consult a professional mechanic.
