When to Use the Central Differential Lock?
2 Answers
When driving through muddy roads, the differential lock can be used. With the vehicle stationary, depress the clutch pedal and press the inter-axle differential lock switch in the cab. Once the inter-axle differential is engaged, the differential lock indicator light will illuminate. In extremely poor road conditions, using both the inter-axle differential lock and the inter-wheel differential lock simultaneously can make passage easier and more manageable. Introduction to Central Differential Locks: 1. Forced Locking Type: This type is equipped with a differential lock on a conventional symmetrical differential. It features a simple structure, is easy to manufacture, and has a high torque distribution ratio. However, it is inconvenient to use as it requires stopping the vehicle to operate. Failure to disengage the differential lock promptly can also cause other issues. 2. High-Friction Self-Locking Type: This differential lock engages through the frictional torque generated by the relative sliding of friction plates. It is commonly found in passenger cars or light vehicles but has higher manufacturing requirements, significant wear on friction components, and higher costs. 3. Torsen Type: This is a new type of differential lock widely used in all-wheel-drive passenger cars. It has a compact structure, offers a wide and adjustable range of torque transmission, but cannot be used as an inter-wheel differential lock on front drive axles.
Use it when wheels slip during off-roading. Last week, I drove a hardcore SUV up a sandy slope, and the right front wheel was completely off the ground, spinning freely, leaving the whole vehicle stuck. At that moment, I engaged the center differential lock, and all four wheels instantly synchronized their power, pulling the car out in no time. However, remember that for part-time 4WD vehicles, never engage the differential lock on paved roads, as it can cause tire resistance during turns and damage the drivetrain. The same principle applies when tackling muddy terrain or snowy slopes—only lock it when you feel one side losing traction, and disengage it immediately after escaping. Seasoned off-roaders know that a differential lock is a lifesaver but not an everyday switch.
