2003-2008 Isuzu Ascender Factory Service Repair Manual

REPAIR INSTRUCTIONS DRIVE BELT REPLACEMENT Removal Procedure 1. Install 3/8 inch breaker bar on the drivebelt tensioner arm and turn the breaker bar clockwise enough to relieve the tension on the drivebelt. 2. Remove the drivebelt. 3. Release the tension on the tensioner arm. Fig. 83: Removing/Installing Drive Belt Courtesy of GENERAL MOTORS CORP.

Installation Procedure 1. Route the drivebelt over all the pulleys except the drivebelt tensioner pulley. 2. Install the 3/8 inch breaker bar on the drivebelt tensioner arm and turn the breaker bar clockwise. 3. Install the drivebelt over the drivebelt tensioner pulley. 4. Slowly release the tension to the drivebelt tensioner arm. 5. Inspect for proper installation of the drivebelt on the pulleys. DRIVE BELT TENSIONER REPLACEMENT Removal Procedure 1. Remove the drivebelt. Refer to DRIVE BELT REPLACEMENT . 2. Inspect the drivebelt. Change the drivebelt as necessary. 3. Using a wrench loosen and remove the drivebelt tensioner bolt. 4. Remove the drivebelt tensioner.

Fig. 84: Removing Drivebelt Tensioner Courtesy of GENERAL MOTORS CORP. Installation Procedure 1. Install the drive belt tensioner. 2. Install the drive belt tensioner bolt. Tighten Tighten the drive belt tensioner bolt to 50 N.m (37 lb ft). NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

3. Install the drive belt DRIVE BELT REPLACEMENT . Fig. 85: Installing Drive Belt Tensioner Courtesy of GENERAL MOTORS CORP. DRIVE BELT IDLER PULLEY REPLACEMENT Removal Procedure 1. Remove the drive belt. Refer to DRIVE BELT REPLACEMENT . 2. Remove the idler pulley bolt from the idler pulley bracket. 3. Remove idler pulley. Installation Procedure

1. Install the idler pulley and secure the pulley with the bolt. Tighten Tighten the idler pulley bolt to 50 N.m (37 lb ft). 2. Install the drive belt. Refer to DRIVE BELT REPLACEMENT . ENGINE MOUNT INSPECTION Front Engine Mount 1. Install a pole jack underneath the oil pan. 2. Insert a block of wood between the engine oil pan and the pole jack. 3. Raise the jack until the wooden block contacts the engine oil pan. 4. Raise the engine in order to place a slight tension on the rubber cushion. Observe both mounts while raising the engine. NOTE: Refer to FASTENER NOTICE in Cautions and Notices. NOTE: Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the remaining mounts are subjected to abnormally high stresses.

2003-2008 Isuzu Ascender Factory Service Repair Manual

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