MAINTAINING YOUR VEHICLE
CONTENTS
䡵 ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED 68RFE (2500/3500 Models) .......277
䡵 ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED AS69RC HD (3500/CHASSIS CAB
MODELS) ............................278
䡵 MAINTENANCE PROCEDURES ...........279
▫ Engine Oil ..........................280
▫ Engine Air Cleaner Filter ................284
▫ Draining Fuel/Water Separator Filter .......288
▫ Engine Mounted Fuel Filter Replacement .....290
▫ Underbody Mounted Fuel Filter Replacement. .293
▫ Priming If The Engine Has Run Out Of Fuel . .295
▫ Intervention Regeneration Strategy — Message
Process Flow ........................296
▫ Diesel Exhaust Fluid ...................297
▫ Maintenance-Free Batteries ..............298
▫ Cooling System ......................299
▫ Charge Air Cooler — Inter-Cooler .........305
▫ Brake System ........................306
▫ Clutch Hydraulic System ................307
▫ Transfer Case — If Equipped .............307
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