Where is the HOWO exhaust brake button located?
4 Answers
HOWO exhaust brake switch is located on the left side of the clutch pedal. The introduction of exhaust brake is as follows: 1. Application of exhaust brake: Exhaust brake is widely used in large diesel vehicles. A regulating valve is installed on the engine exhaust pipe. The closure of this valve increases the pressure during the exhaust stroke, utilizing the generated negative pressure to obtain braking force. 2. Function of exhaust brake: The exhaust brake allows smooth engine exhaust when going downhill. 3. Principle of exhaust brake: The exhaust brake is implemented in the engine. Its principle is to close the engine exhaust channel, causing the engine piston to encounter gas back pressure during the exhaust stroke, thereby resisting engine operation and generating braking effect, ultimately achieving the purpose of controlling vehicle speed.
As a driver who frequently operates HOWO trucks, I remember the exhaust brake button is quite prominently placed—it's on the lever to the right of the steering wheel, usually marked with a small icon resembling a puff of smoke. A gentle flick is all it takes to activate the exhaust brake. This feature is especially handy during downhill drives, helping you slow down gradually and reduce brake pad wear, unlike regular brakes that are prone to overheating. When driving in mountainous areas or on long-haul trips, I make it a habit to check if the button moves smoothly without unusual noises. If it stops lighting up or responding after prolonged use, it might indicate a loose wiring harness, and a timely visit to the repair shop is necessary. While there are other function buttons around the driver's seat, the exhaust brake’s position is ergonomically designed to prevent accidental activation. Familiarizing yourself with its location before driving significantly enhances safety.
Having worked on many HOWO trucks, the exhaust brake button is usually located below the right side of the steering wheel or near the instrument panel, resembling a toggle switch or knob with an exhaust symbol. When engaged, it controls a valve to restrict engine exhaust, assisting with braking without wearing components like emergency braking does. I've encountered customers complaining about the button not working—common issues include oxidized connectors or blown fuses. Those with DIY skills can remove the panel to inspect wiring, but it's recommended to have professionals test it during regular maintenance. The placement is well-considered, near the turn signal lever for easy operation. Older HOWO models may have the button positioned further back, while newer versions often integrate it into the multifunction steering wheel, allowing effortless activation without distraction while driving.
I've only been driving my HOWO truck for a few months. The exhaust brake button isn't complicated - it's conveniently located on the right side of the steering wheel with a small icon indicator, making it easy to find. Simply press or toggle it to activate, which helps slow the vehicle downhill while preventing excessive wear on the foot brake. Beginners might initially consider it unnecessary, but it's actually crucial for both fuel efficiency and safety. Positioned high for easy access without bending, be careful not to confuse it with other controls like the air conditioning buttons located lower down. With practice it becomes second nature - never overlook this important driving feature.
