Jeep 2008 Grand Cherokee User Manual download pdf (Page 398)

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101

Drive Belts — Check Condition and Tension

Belt tension is controlled by means of an automatic

tensioner. No belt tension adjustments are required.

However, belt and belt tensioner condition should be

inspected at the specified intervals, and replaced if re-

quired. See your authorized dealer for service.

At the mileage indicated in the maintenance schedule, all

belts and tensioner should be checked for condition.

Improper belt tension can cause belt slippage and failure.

Belts should be inspected for evidence of cuts, cracks,

glazing, or frayed cords and replaced ifthere isindication

of damage which could result in belt failure. Low gen-

erator belt tension can cause battery failure.

Also, check belt routing to make sure there is no inter-

ference between the belts and other engine components.

Spark Plugs

Spark plugs must fire properly to assure engine perfor-

mance and emission control. New spark plugs should be

installed atthe specifiedmileage. Theentire set should be

replaced if there is any malfunction due to a faulty spark

plug. Refer to “Fluids, Lubricants, and Genuine Parts” in

this section for spark plug information.

Spark Plug Wires

The spark plug wires should be kept clean and properly

connected. Terminals should be fully seated. Cracked,

damaged, or faulty wires should be replaced.

Engine Air Cleaner Filter

Refer to the Maintenance Schedule for recommended

Engine Air Cleaner Filter change intervals.

398 MAINTAINING YOUR VEHICLE

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Jeep 2008 Grand Cherokee User Manual Page 398

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