Altima 2.5 L4-2.5L (QR25DE) (2002)
Drive Belt Tensioner: Service and Repair
Automatic Tensioner
REMOVAL
1. Remove front RH engine side cover.
2. With box wrench, and while securely holding the hexagonal part in pulley center of automatic tensioner, move the wrench handle in the direction
of arrow (loosening direction of tensioner).
CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off.
3. Insert a rod approximately 6 mm (0.24 inch) in diameter through the rear of engine into holding boss to fix tensioner pulley.
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Leave tensioner pulley arm locked until belt is installed again.
4. Loosen auxiliary drive belt from water pump pulley in sequence, and remove it.
INSTALLATION
1. With box wrench, and while securely holding the hexagonal part in pulley center of automatic tensioner, move the wrench handle in the direction
of arrow [loosening direction of tensioner].
CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off.
2. Insert a rod approximately 6 mm (0.24 inch) in diameter through the rear of engine into holding boss to fix tensioner pulley.
3. Hook the auxiliary drive belt onto all of the pulleys except for the water pump pulley. Hook the drive belt onto water pump pulley last.
CAUTION: Confirm belts are completely set on the pulleys.
4. Release tensioner, and apply tensions to belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tensions of belt at indicator is within the allowable use range.