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Home >> Jeep >> 2003 >> Liberty Limited, 4WD, Part Time, 42RLE >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Service & Adjustment Specifications >> Quick-Service >> Service Intervals & Specifications
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Service Intervals & Specifications

REPLACEMENT INTERVALS (1)

Component Months Miles
Air Filter
Normal Service 30 30,000
Severe Service (2) 15,000
Automatic Transmission
Normal Service 102 (3) 102,000
Severe Service (2) (3) 60,000
Coolant
Normal Service (4) (4)
Severe Service (2) 99,000
Drive Belt
Normal Service 60 (5) 60,000
Severe Service (2) (6) 60,000
Front & Rear Axle Fluid
Severe Service (2) 12,000
Manual Transmission (7) (7)
Oil & Filter
Normal Service 6 6000
Severe Service (2) 3000
PCV Valve
Normal Service 60 (8) 60,000
Severe Service (2) 30,000
Spark Plugs 30 30,000
Transfer Case
Normal Service 120 120,000
Severe Service (2) 60,000
(1) Different interval may be required for normal and severe service. Severe service is described as frequent short trip driving (less than 5 miles), frequent driving in dusty conditions, extensive idling, trailer towing, sustained high speed operation, off road driving, desert operation, cold climate operation and commercial service.
(2) Monthly service interval does not apply.
(3) Change fluid and main sump filter.
(4) Replace coolant at 60 months regardless of mileage.
(5) After initial inspection, check every 12,000 miles or 12 months afterward.
(6) After initial inspection, check every 15,000 miles.
(7) Service intervals are not available from manufacturer. Check fluid level at every engine oil change.
(8) After initial inspection, check every 30,000 miles or 30 months.
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