DV11
Operation and Maintenance
146
Common Rail Fuel-injection System
Printed in Mar. 2005 PS-MMA0608-E1A
Solenoid valve torque
20
Nm
3.6.6. Control valve
CAUTION:
Remove control valve covers
carefully to avoid personal injury.
Control valve covers are under load
from the control valve springs.
1.
Apply pressure on the control valve
cover and remove the hex head
capscrew
.
2.
Slowly remove cover until spring pressure ceases then remove the two control
valve springs
.
3.
Using needle-nose pliers, reach into the bore and grasp the stem of the control
valve. Remove the control valve
.
4.
Wash the control valves with approved cleaning solvent. Push a wire into the hole
in the base of the valve to the distance required to ensure that the ball check is
free. The ball should lift with light pressure on the wire. If the ball is stuck, replace
the control valve. Dry the valve with compressed air with wipe clean with a paper
towel
.
5.
Thoroughly clean the control valve bore in the housing using clean paper towels.
Never use rags as they may leave lint and residue, which can plug the oil
passageways.
6.
Coat the parts with clean engine oil. Reassemble parts, reversing the removal
procedure
.
3.6.7. Master piston
CAUTION:
Wear safety glasses. The master piston spring is under strong compression.
Use caution when removing the retaining ring and cover. If the spring is
accidentally discharged, personal injury may result
.
Downloaded from
www.Manualslib.com
manuals search engine