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Drive Belts - Check Condition and Tension
At the mileages shown in the appropriate “Maintenance
Schedule,” check all drive belts for condition and proper
tension. Improper belt tension can cause belt slippage
and failure.
Inspect the drive belt for evidence of cuts, cracks, or
glazing and replace them if there is any sign of damage
which could result in belt failure. If adjustment is re-
quired, adjust the belts according to the specifications
and procedures shown in the Service Manual.
Special tools are required to properly measure tension
and to restore belt tension to factory specifications. Also,
check belt routing to make sure there is no interference
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 at the specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug. Refer to the “Vehicle Emission Control Informa-
tion” label in the engine compartment for spark plug
information.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
converter as an emission control device.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
MAINTAINING YOUR VEHICLE
261
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Summary of Contents for 2004 Cherokee
Page 2: ......
Page 54: ......
Page 102: ...102 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 126: ...INSTRUMENT PANEL AND INTERIOR CONTROLS 126 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 127: ...INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 127 4 ...
Page 128: ...INSTRUMENT CLUSTER IF EQUIPPED 128 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 210: ...210 STARTING AND OPERATING ...
Page 230: ...Minimum Vehicle Requirements for Trailer Towing 230 STARTING AND OPERATING ...
Page 251: ...4 0L ENGINE MAINTAINING YOUR VEHICLE 251 7 ...
Page 252: ...4 7L 4 7 HO ENGINE 252 MAINTAINING YOUR VEHICLE ...
Page 294: ......
Page 322: ...322 IF YOU NEED CONSUMER ASSISTANCE ...
Page 326: ......
Page 327: ...INDEX 10 ...