300Tdi Defender
ELECTRICAL
25
REPAIR
DIGITAL DIESEL SHUT-OFF VALVE (DDS)
Service repair no - 86.77.00
Remove
1. Remove fuel injection pump
See FUEL
SYSTEM, Repair, Fuel injection pump.
2. Drill out 2 shear bolts securing DDS valve and
clamp, using a 3.2 mm drill, to a depth of
approximately 5 mm.
CAUTION: Use a drill bushing to guide the
drill.
3. Using an extractor, remove the 2 DDS valve
retaining bolts and discard.
4. Release DDS valve from fuel shut-off solenoid.
5. Remove protective cap from shut-off solenoid.
6. Unscrew terminal nut, release terminal lead
eyelet and remove DDS valve.
7. Remove protective cap retainer and release
DDS valve clamp from behind fuel shut-off
solenoid.
Refit
8. Position DDS valve clamp behind fuel shut-off
solenoid and fit protective cap retainer.
9. Fit DDS terminal lead to fuel shut-off solenoid.
Tighten nut to
2 Nm (1.5 lbf/ft).
10. Fit protective cap to fuel shut-off solenoid,
ensuring terminal lead is correcly routed on RH
side of cap.
11. Secure DDS valve to fuel cut-off solenoid and
clamp. Tighten new shear bolts progressively
until heads shear.
12. Fit fuel injection pump
See FUEL SYSTEM,
Repair, Fuel injection pump.
