1996 Nissan Pickup Owner's Manual - Page 90

AUTO-LOCK FREE-RUNNING HUBS Your NISSAN is equipped with one of two 4WD systems, auto-lock free-running hubs or manual-lock free-running hubs. ● Sudden acceleration from a stop after shifting from 2-wheel drive to 4-wheel drive may not allow engagement of the auto-locking freerunning hubs and may cause a clattering noise. Continued use of the vehicle with this noise may damage the hub lock. In such a case, release the accelerator pedal to reduce the engine speed or stop the vehicle. ● If the auto-locking hubs make a clattering noise after shifting from 4-wheel drive to 2-wheel drive, stop and move the vehicle about 7 to 10 feet (2 to 3 m) in reverse. ● Under extremely cold conditions [below 5°F (-15°C)], the front axle shafts may rotate even with the transfer lever in the 2H position. If this occurs, the auto-locking hubs may make a clattering noise. To avoid this, drive first in 4-wheel drive to warm up the vehicle and differential gear oil. Then, shift to 2-wheel drive. SD0021 The auto-lock free-running hub is designed to allow for automatic 4-wheel drive engagement when the shift lever is moved to the 4H or 4L position. If your vehicle is equipped with this system, follow these operational cautions: CAUTION ● The auto-locking hubs will make a clicking noise when engaging and disengaging. This is normal. 4-15