15000 MI or 24000 KM

Lubricate
    Transfer Case
    Drive/Propeller Shaft
      Lubricate daily if operated in water.
    Clutch Linkage
    Brakes and Traction Control
      Lubricate body actuating mechanisms.
    Body and Frame
      Lubricate body actuating mechanisms.
    Axle Pivot Bushing
      Heavy Duty Service
    Axle Joint
      Heavy Duty Service
Clean
    Carburetor
      Clean choke shaft, fast idle cam and pivots.
Check
    Fluid - Transfer Case
      Check fluid level.
    Fluid - M/T
      Check fluid level.
    Fluid - Differential
      Check fluid level.
    Fluid - A/T
      Light Duty Cycle
    Clutch Fluid
      Check fluid level.
Inspect
    Air Injection
      Inspect air injection system.
Replace
    Spark Plug
      Models with catalytic converters.
    Positive Crankcase Ventilation
      Replace PCV filter if equipped.
    Engine Oil
      If your mileage is less the 7,500 miles a yearly, replace the engine oil filter at each oil change.
    Drive Belt
      Replace water pump and alternator belts.