Dodge R1500 1999 Service Manual page 881

refer to the 5.9L V8 TURBO DIESEL - VIN [D] article.
in the ENGINE MECHANICAL section.
Drain fuel/water separator by pushing up on the valve
located on the bottom of the fuel filter until clear fuel
is visible. Drain fuel into a container and follow proper
disposal procedures.
CAUTION: DO NOT drain fuel/water separator when engine is running or
hot. Allow engine to cool before draining. Verify that the
WATER IN FUEL light on instrument panel is OFF.
ADDITIONAL SERVICE INFORMATION - CNG MODELS
Fig. 11: Locating CNG Components
Courtesy of Chrysler Corp.