1997 Nissan Pickup Owner's Manual - Page 97

AUTO-LOCK FREE-RUNNING HUBS ● Do not leave the transfer control lever in the N position. Otherwise, the vehicle could roll unexpectedly even if the manual transmission is in gear or the automatic transmission is in the P position. ● Failure to engage the transfer control lever in 2H, 4H, or 4L could result in the vehicle moving unexpectedly, which in turn could result in serious personal injury or property damage. Your NISSAN is equipped with one of two 4WD systems, auto-lock free-running hubs or manual-lock free-running hubs. SD0021 ● Accelerating quickly 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. 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. 4-16