The accessory journey belt connect the crankshaft to all the critical accessories your car needs. These space the air conditioning, strength steering, alternator, and water pump. Because the Ram supplies the serpentine belt to rotate the water pump, once the belt breaks you are required to concerned a stop.

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This article uses to the Dodge lamb (2002-2008).

The serpentine belt is do of a rubber compound and also is grooved for optimal friction through the accessory pulleys. A serpentine belt tensioner is provided to save the amount of friction in ~ the proper level. Evade recommends transforming the serpentine belt between 75,000 and 90,000 miles. When the belt wears, cracks develop and also it starts come stretch. This results in a ns of efficiency in your accessories as the belt slips top top the pulleys. Squealing is typically heard native slipping belts return water/dirt on the belt can cause comparable sounds. Make sure the shielding around your wheels and engine is enclosed for full serpentine belt life.

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Materials NeededSerpentine beltRatchet and also 15mm socket (3.7 and also 4.7 engines)3/8" ratchet (5.7 engine)Rubber glovesSafety glasses

The procedure because that the 5.7 hemi engine different from the 3.7/4.7 engines.

Step 1 – eliminate the serpentine belt

For owners through the 5.7 liter engine, friend will require a 3/8" ratchet (preferably long-handled). ~ above the tensioner you will see/feel a recessed area wherein the ratchet is designed to fit into. Once the ratchet is connected, relocate the tensioner clockwise to relax the stress and anxiety from the belt. When holding the tensioner in this position, remove the belt indigenous the most available pulley and also untangle it the end of the engine.

Owners v the 4.7 and 3.7 liter engines will require a ratchet v a 15mm socket. Turn the 15mm top bolt on the tensioner wheel clockwise and remove the belt indigenous the most available pulley. Then eliminate it native the engine.

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Figure 1. The red circle indicates the ar of the room where your 3/8" ratchet snaps into.
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Figure 2. The red circle suggests the location of the 15mm headed bolt on the 4.7 and 3.7 engines.

Step 2 – install the new serpentine belt

With the belt off, compare the sizes of both the old and new. They have to be similar in length, and the number of ribs needs to be the same. The ribbed side of the belt will challenge the ribbed pulleys, and the smooth next of the belt will face the smooth pulleys.

Use the numbers in number 3 because that the component locations. For the 5.7 begin by routing the belt roughly the alternator wheel (8) climate down and around the tensioner (7). Continue around the idler sheave (5) then approximately the harmonic balancer (4). Next up is the water pump (2) then the power steering (3). The belt will certainly then with the A/C compressor. Now grab her 3/8" ratchet and also turn the tensioner clockwise again. If doing so, relocate the last ar of the belt over the 2nd idler wheel (9). Before you release the tensioner, make sure the belt is centered over the pulleys and the ribs are correctly collection into the wheel grooves. Relax the tensioner slowly and smoothly.

Begin the 4.7 and also 3.7 serpentine belt surroundings by routing the belt around the alternator/generator sheave then under the water pump pulley. Now relocate it over the A/C pulley and also down the outside of the tensioner. Proceed to move the belt over the idler wheel then down and also around the crankshaft pulley-block to the exterior of the power steering pulley. In ~ this point you will have actually ran out of belt length. Remove the belt native the idler sheave or water pump pulley and also install it onto the strength steering pulley. Usage your ratchet and 15mm socket to relocate the tensioner and simultaneously path the belt top top the idler pulley-block or water pump pulley. It"s easiest to do them last due to the fact that they room smooth and also it"s easier to slide the belt onto them. Make certain the belt is focused on the pulleys and also the ribs room correctly collection into the sheave grooves. Now release the tensioner slowly and also smoothly.

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Figure 3. The 5.7 hem serpentine belt diagram.
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Figure 4. The 4.7 and 3.7 engine serpentine belt diagram.

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Step 3 – check your work

Start the engine and watch the belt together it rides top top the pulleys. Ideally you must not watch it move side to side which shows the belt is centered. If squealing is current there might be dust on the belt or pulleys. Spray the pulleys down v compressed air. A "belt dressing" can additionally be purchased native your local parts store.