MAINTAINING YOUR VEHICLE
CONTENTS
! ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED 68RFE (2500/3500 Models) .......283
! ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED AS69RC HD (3500/CHASSIS CAB
MODELS) ............................284
! MAINTENANCE PROCEDURES ...........285
▫ Engine Oil ..........................286
▫ Engine Air Cleaner Filter ................290
▫ Draining Fuel/Water Separator Filter .......294
▫ Engine Mounted Fuel Filter Replacement .....296
▫ Underbody Mounted Fuel Filter Replacement. .298
▫ Priming If The Engine Has Run Out Of Fuel . .300
▫ Intervention Regeneration Strategy — Message
Process Flow ........................302
▫ Diesel Exhaust Fluid ...................303
▫ Maintenance-Free Batteries ..............303
▫ Cooling System ......................304
▫ Charge Air Cooler — Inter-Cooler .........310
▫ Brake System ........................310
▫ Clutch Hydraulic System ................312
▫ Transfer Case — If Equipped .............312
6