Check System Contamination and Replace Components As Required
CHECK SYSTEM CONTAMINATION AND REPLACE COMPONENTS AS REQUIRED1. Remove the reservoir filter to inspect for signs of debris as follows:
^ Release the dynamic response reservoir clip and tie the reservoir aside. (Figure 4)
^ Disconnect the intake air resonator.
^ Disconnect the RH mass air flow (MAF) sensor electrical connectors. (Figure 5)
^ Remove the RH air cleaner assembly.
NOTE:
Some fluid spillage is inevitable during the reservoir removal operation.
^ Position container to collect fluid loss.
CAUTION:
Clean working conditions are critical before disconnecting or removing the components.
^ The area around the joint faces and connections must be cleaned and kept clean during work.
^ Open connections must be plugged to prevent contamination.
^ Remove the fluid reservoir as follows:
^ Clamp the hoses with hose pliers to prevent air ingress.
^ Release the two hose clamps.
^ Disconnect the hoses from the fluid reservoir.
NOTE:
Filter contamination can provide guidance for system troubleshooting and repair:
^ A small number of random particles is acceptable ([A] in Figure 6).
^ If the filter is heavily contaminated with black particles and sludge ([B] in Figure 6), an actuator internal piston seal failure has probably occurred.
^ If the filter is lightly contaminated with grey metallic looking particles ([C] in Figure 6), a pump failure may have occurred.
2. Inspect the reservoir fluid filter for signs of contamination.
^ If condition A is present no action is required.
^ If condition B is present, discard the reservoir and continue inspection and diagnosis from step 6 below.
^ If condition C is present, discard the reservoir and continue inspection and diagnosis from step 5 below.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > LS Range Rover Sport> Service Information/ 2007 > Workshop Manuals > Bookmark "Chassis/204-06 Ride and Handling Optimization" LINK "Valve Block (60.60.20)"
3. If indicated in "Diagnostic Procedure" Step 7, refer to GTR section 204-06 to install a new valve block.
4. If a valve block replacement is not indicated in "Diagnostic Procedure" Step 7, refer to GTR Workshop Manual, section: 204-06 (60.60.21) to inspect the valve block filter as follows:
^ Remove the valve block filter.
^ Inspect the filter for signs of distortion or discoloration indicating excessive system pressure. (X in Figure 7)
^ Replace a distorted or discolored filter.
NOTE:
It will not be necessary to change either actuator if the pump is replaced.
5. If indicated by filter inspection in step 2, install a new dynamic response pump.
6. Inspect the high-pressure hose crimps for signs of crimp connector movement or excessive gap. (Figures 8 and 9)
7. Replace a hose assembly that shows signs of movement or a gap larger than 1 mm.
8. Install the new or inspected fluid reservoir as follows:
^ Clean the component mating faces.
^ Connect the hoses.
^ Install the hose clamps.
^ Remove hose pliers used to seal the hoses.
NOTE:
When installing the air cleaner, make sure the locating pegs fit securely into the grommets.
9. Install the air cleaner assembly.