• Disconnect the batteries. Refer to the OEM service manual.
• Remove the water pump drive belt. Refer to Procedure 008-003 in Section 8.

Remove the lock nut and the washer from the back of the idler pulley shaft.

Remove the adjusting screw.

Remove the idler pulley from the water pump body.

NOTE: Do not tighten the lock nut until the water pump drive belt has been installed and adjusted.

Install the new idler pulley into the water pump body.

Install the washer and the lock nut onto the back of the pulley shaft.

Install the adjusting screw into the idler pulley shaft.

NOTE: Belt tension can increase when the lock nut is tightened. Do not adjust belt tension to full value with the adjusting screws.

• Install and adjust the water pump drive belt. Refer to Procedure 008-003 in Section 8.
• Connect the batteries. Refer to the OEM service manual.
• Operate the engine and check for proper operation.