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380 SERVICING AND MAINTENANCE
A CCESSORY D RIVE B ELT I NSPECTION When inspecting accessory drive belts, small cracks that run across ribbed surface of belt from rib to rib, are considered normal. These are not a reason to replace belt. However, cracks running along a rib (not across) are not normal. Any belt with cracks running along a rib must be replaced. Also have the belt replaced if it has excessive wear, frayed cords or severe glazing. Accessory Belt (Serpentine Belt) Conditions that would require replacement: Rib chunking (one or more ribs has separated from belt body) Rib or belt wear Longitudinal belt cracking (cracks between two ribs) Belt slips “Groove jumping" (belt does not maintain correct position on pulley) Belt broken (note: identify and correct problem before new belt is installed) Noise (objectionable squeal, squeak, or rumble is heard or felt while drive belt is in operation) Some conditions can be caused by a faulty component such as a belt pulley. Belt pulleys should be carefully inspected for damage and proper alignment. Belt replacement on some models requires the use of special tools, we recommend having your vehicle serviced at an authorized dealer. D RAINING F UEL /W ATER S EPARATOR
F ILTER — D IESEL E NGINE
There are two fuel filter assemblies. One is located on the driver's side of the engine. The best access to this water drain valve is from under the hood. The second one is on the under body, located in front of the rear axle above the drive shaft. The best access to this water drain valve is from under the vehicle. If water is detected in the water separator while the engine is running, or while the ignition switch is in the ON position, the Water In Fuel Indicator Light will illuminate and an audible chime will be heard five times. At this point you should stop the engine and drain the water from both of the filters. WARNING! Do not attempt to inspect an accessory drive belt with vehicle running. When working near the radiator cooling fan, disconnect the fan motor lead. The fan is temperature controlled and can start at any time regardless of ignition mode. You could be injured by the moving fan blades. You can be badly injured working on or around a motor vehicle. Only do service work for which you have the knowledge and the proper equip - ment. If you have any doubt about your ability to perform a service job, take your vehicle to a competent mechanic. CAUTION! Do not drain the fuel/water separator filter when the engine is running. Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appropriate container. |