Changing the fan belt on the Nissan Patrol Turbo Diesel is an appropriate fix if the part breaks, becomes worn down or looses tension. Hearing a whirring sound from the engine is a strong indicator of the belt going bad. You need a strong belt in place to help cool down the engine. The belt is connected to the side of the engine and looped through a series of pattern and turns on the pulley.
Turn the engine off, allowing it enough time to cool. This will save you the trouble of receiving burns while working under the hood.
Pop the hood of the car and locate the fan belt attached to the side of the engine.
Loosen the nuts that create tension on the connecting pulleys. To do this, press your wrench into the grooves of the nut to get a firm grip, and turn it hard to the left. The nut rotates with each counterclockwise turn. Loosen nuts one by one; do not to remove them.
Pull the old belt off of the engine so that you can replace it with a new one.
Fit the new belt in place at the points of connection. Keep the belt tight; do not allow any slack.
Turn the wrench clockwise to re-tighten the nuts. The nuts must be tight so that the belt stays in place.
Close the hood of the car and clean up your work place.
