Drive Belt Tensioner: Service and Repair
BELT TENSIONERSREMOVAL-4.7L ENGINE
1. Remove accessory drive belt.
2. Remove tensioner assembly from engine front cover (Fig. 1).
WARNING: BECAUSE OF HIGH SPRING TENSION, DO NOT ATTEMPT TO DISASSEMBLE AUTOMATIC TENSIONER. UNIT IS SERVICED AS AN ASSEMBLY (EXCEPT FOR PULLEY ON TENSIONER).
3. Remove pulley bolt. Remove pulley from tensioner.
INSTALLATION-4.7L ENGINE
1. Install pulley and pulley bolt to tensioner. Tighten bolt to 61 Nm (45 ft. lbs.) torque.
2. An indexing slot is located on back of tensioner. Align this slot to the head of the bolt on the front cover. Install the mounting bolt. Tighten bolt to 41 Nm (30 ft. lbs.).
3. Install drive belt.
4. Check belt indexing marks.