Maintenance Procedures

CAUTION
^ Inspect Exhaust Gas Recirculation (EGR) passages in the intake manifold. Clean all loose particles and deposits from passages to prevent them from fouling the EGR valve.

^ Do Not wash any EGR valve in solvents or degreaser, as permanent damage may result, Also, sand blasting of the valve is not recommended, since this can affect the operation of the valve.

^ Wear approved eye protection for this cleaning procedure, to avoid possible injury to the eyes.

PROCEDURE
Use the following cleaning instructions for all EGR valves except the digital EGR valves.
1. With a wire wheel, buff the exhaust deposits from the mounting surface and around the valve.
2. Look for exhaust deposits in the valve outlet. Remove deposit buildup with a screwdriver.
3. Clean mounting surfaces of intake manifold and valve assembly.
4. Install valve assembly using new gasket.