Ram B1500, B2500, B3500, 1999-2003

Accessory Drive Belts 1

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Adjustment



Belt tension is not adjustable. Belt adjustment is maintained by an automatic (spring load) belt tensioner.

The belts used on these vehicle are equipped with automatic (spring load) tensioners which maintain tension. No adjustment is necessary or possible.

The 2.5L engine requires periodic adjustment. All other models are fitted with automatic belt tensioners. Be sure, however, to inspect/replace the belts at the proper intervals.

Belt Tension Inspection



Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.


CAUTION
If equipped, the electrically operated cooling fan may come on under certain circumstances, even though the ignition is OFF . Be sure to disconnect the negative battery cable before servicing your vehicle

Inspect the belts for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately. It is best to replace all drive belts at one time, as a preventive maintenance measure, during this service operation.

Check belt tension. For 2.5L engines, tension is checked with a belt tension gauge. For models with automatic tensioners, alignment marks are used to indicate proper position when belt replacement is required:

For 4.7L engines:

Check the belt if the distance between index marks exceeds 0.94 in. (24 mm).

For other engines

Check the belt if indexing arrow has moved to the tensioner travel limit as shown in the illustration. The arrow should be within 1 / 8 inch (3mm) of the indexing mark if a new belt is installed.

If wear indicators show that belt replacement is needed, check that belt wear is the cause. False readings can be caused by loose or worn pulleys, damaged bearings, loose or misaligned accessories or incorrectly fitted belts.



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Fig. There are typically three types of accessory drive belts found on vehicles today



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Fig. Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure



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Fig. The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear.



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Fig. Typical wear patterns for a serpentine drive belt



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Fig. Accessory drive belt wear indicator-4.7L engine



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Fig. The belt wear limit occurs when the indexing arrow reaches the travel limit indicator (A)-typical

Drive Belt Routings



The belt routing schematics are published from the latest information available at the time of publication. If anything differs between these schematics and the Belt Routing Label, use the schematics on Belt Routing Label. This label is located in the engine compartment.

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Fig. Accessory serpentine belt routing-3.7L and 4.7L gasoline engines



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Fig. Accessory serpentine belt routing-3.9L, 5.2L and 5.9L LDC gasoline engines



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Fig. Accessory serpentine belt routing: Alternator (1), idler pulley (2), P/S pump (3), A/C compressor (4), crankshaft (5), belt tensioner (6) and water pump (7)-5.7L engine



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Fig. Accessory serpentine belt routing-5.9L HDC and 8.0L gasoline engines with A/C



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Fig. Accessory serpentine belt routing-5.9L HDC and 8.0L gasoline engines without A/C

The belt routing schematics are published from the latest information available at the time of publication. If anything differs between these schematics and the Belt Routing Label, use the schematics on Belt Routing Label. This label is located in the engine compartment.

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Fig. Accessory serpentine belt routing-2001-03 5.9L Diesel engines with A/C



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Fig. Accessory serpentine belt routing-2001-03 5.9L Diesel engines without A/C



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Fig. Accessory serpentine belt routing-2004-05 5.9L Diesel engines with A/C



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Fig. Accessory serpentine belt routing-2004-05 5.9L Diesel engines without A/C



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Fig. Accessory serpentine belt routing-A/C compressor (1), Without A/C (2), Power Steering Pump (3), Water Pump (4), Crankshaft Pulley (5), Auto tensioner (6), Alternator (7), Idler pulley (8)


WARNING
Belt routing schematics are based on the latest information available at the time of publication. The vehicle's Belt Routing Label, located in the engine compartment, should be consulted when replacing belt.



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Fig. Vehicle-specific belt routing is provided on a plate in the engine compartment

 
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