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Navistar WorkStar 7400 - Page 221

Navistar WorkStar 7400
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Maintenance Intervals And Specications
Lubrication and Maintenance Interval Recommended Synchronized Intervals (cont.)
System Item Intervals Special Interval (3) : miles (km) / hours / months
Engine Oil Level Inspect A, B
Fan Belt Inspect A, B
Air Filter Check Restriction A, B
Air Induction System Check looseness/leaks A, B
Air Filter Replace At Restriction Indication or 60 months.
Engine Oil and Filter(s) Replace Refer to Engine Operation and Maintenance Manual.
Fan Belt Auto Tensioner Inspect Refer to Engine Operation and Maintenance Manual.
Fuel Filter Drain Separated Water
Refer to Engine Operation and Maintenance Manual.
Engine
Fuel Filter Replace Refer to Engine Operation and Maintenance Manual.
Fuel Tank(s) Drain and Flush (Note 3) 100,000(160,000)/–/12Fuel Tank
Fuel Sender, Hose Connections Check for Loose
Connectors
12 months
Pipes/Mufer Inspect for leakage/looseness A, BExhaust
System
Diesel Particulate Filter (DPF) Clean out ash Refer to Engine Operation and Maintenance Manual
Clutch Release Bearing/Shafts/Fork Lubricate Highway 10,000 miles (16,000 km)/–/1
City/Severe Service: /250/1
3879634R1 209

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