1995 LAND ROVER DISCOVERY fuel cap

SFI
29
REPAIR ADD: 09/95 ANTI-TRICKLE FILL VALVE - ADVANCED EVAPS
Service repair no - 19.55.31
Remove
1.Remove the fuel filler neck.
See fuel filler neck
- advanced evaps
2.Release the cobra clip securing the hose to the
liquid/vapour separator and disconnect the hose.
3.Loosen the grub screw on the valve nut, two
complete turns.
4.Loosen the valve nut completely.
NOTE: The nut is held captive by the stub
pipe on the filler neck.
5.Carefully remove the valve and hose assembly
from the filler neckRefit
6.Fit a new 'O' ring to the recess in the stub pipe.
7.Fit the valve and hose assembly to the filler neck
stub pipe, ensuring that the 'O' ring is fitted
around the body of the valve as it is pushed into
the filler neck stub pipe.
8.Hand tighten the nut, then tighten to
3 Nm.
9.Tighten the grub screw to2 Nm.
10.Connect the hose to the liquid/vapour separator
and secure with the cobra clip.
11.Fit the fuel filler neck.
See fuel filler neck -
advanced evaps;refit

19FUEL SYSTEM
2
DESCRIPTION AND OPERATION Basic ignition timing
MEMS provides the optimum ignition timing for the
relevant engine speed and load. The speed and
position of the engine is detected by the crankshaft
sensor which is bolted to, and projects through the
engine adapter plate.
The sensor incorporates an armature which runs
adjacent to a reluctor insert in the flywheel, the insert
consisting of 34 poles spaced at 10°intervals, with
two missing poles 180°apart to identify the T.D.C.
positions.
The sensor 'reads' these poles to provide a constant
up-date of engine speed and crankshaft position to
the ECM
The load signal is provided by the manifold absolute
pressure sensor mounted inside the ECM casing
which detects manifold pressure via a hose connected
to the manifold chamber. The sensor converts
pressure variations into graduated electrical signals
which can be read by the ECMIgnition timing compensation
Coolant temperature sensor
When the ECM receives a low engine temperature
signal from the coolant sensor, it provides optimum
driveability and emissions by advancing or retarding
the ignition timing.
Knock sensor
The knock sensor is a capacitive device mounted in
the cylinder block between nos. 2 and 3 cylinders
below the inlet manifold. The sensor monitors noise
and vibration in the engine and passes this
information to the ECM which is able to identify the
characteristics of the knocking and make the
necessary corrections to the ignition timing of
individual cylinders.
Idle speed control
When the throttle pedal is released and the engine is
at idle, the ECM uses the fast response of ignition
timing to assist idle speed control.
When loads are placed on, or removed from the
engine the ECM senses the change in engine speed
and in conjuction with the opening of the throttle disc
by the stepper motor, advances or retards the ignition
timing to maintain the specified idle speed. When load
is removed from the engine and the stepper motor
returns to it's original position, the ignition timing
returns to the idle setting.
NOTE: Due to the sensitivity of this system
the ignition timing will be constantly
changing at idle speed.

19FUEL SYSTEM
6
DESCRIPTION AND OPERATION
Non - evaporative loss equipment
1. Throttle disc
2. Fuel cut-off valve
3. Two way valve4. Charcoal canister
5. Purge control valve
6. Fuel filler cap7. ECM
8. One way valve
Charcoal canister
A charcoal canister is used for the temporary storage
of fuel vapour from the fuel tank until the vapour can
be purged from the canister into the engine and
burned.
The charcoal canister is purged when the purge
control valve is open, fresh air is drawn through the
purge air hose, through the charcoal canister and into
a port in the inlet manifold.
Purge control valve
A purge control valve is operated by the ECM The
valve remains closed when the engine is cold and at
idling speed to protect engine tune and catalyst
performance. If the charcoal canister was purged
during cold running or at idling speed, the additional
enrichment in fuel mixture would delay catalyst light
off time and cause erratic idle. When the engine
temperature is above 75°C, the purge control valve
will be operational (modulated ON and OFF)
whenever the engine speed is above approximately
1600 rev/min. When the purge valve is opened, fuel
vapour from the charcoal canister is drawn into the
inlet manifold for combustion.

Mpi
7
REPAIR FUEL RAIL AND INJECTORS
Service repair no - 19.60.04 - Rail
Service repair no - 19.60.10 - Injectors
Remove
1.Remove inlet manifold chamber gasket.
See
MANIFOLD AND EXHAUST SYSTEM, Repair,
Manifold Chamber Gasket - Mpi
2.Remove pressure regulator.
3.Remove 4 bolts securing fuel feed hose flange
stiffening bracket, remove stiffening bracket.
4.Release fuel feed hose from fuel rail.
5.Discard 'O' ring.
6.Disconnect 4 injector multiplugs.
7.Move injector harness aside.
8.Remove 2 bolts securing fuel rail to inlet
manifold.
9.Release 4 injectors from inlet manifold.
10.Remove fuel rail complete with injectors.
11.Discard outlet 'O' rings from injectors.
12.Fix protective cap to each injector.
Do not carry out further dismantling if component
is removed for access only.
13.Remove clip(s) securing injector(s) to fuel rail.
14.Remove injector(s).
15.Discard inlet 'O' ring(s) from injector(s).
16.Remove fuel temperature sensor.

ZF
7
REPAIR Accessories removal/fitting
If fitting a replacement transmission assembly to the
vehicle, remove the following items from the existing
assembly and fit to the replacement.
CAUTION: It is important to remove the
spacer from the extension shaft and fit
onto the replacement unit.
50.Breather pipe union and washers from main
gearbox.
51.Breather pipe, union and washers from transfer
gearbox.
52.Main gearbox selector lever.
53.RH mounting bracket assembly.
54.Oil cooler pipe unions.
55.Fit blanks to all apertures where unions have
been removed and blank off pipe ends.
Refit
1.Fit transmission to cradle and hoist.
2.Locate hoist under vehicle and remove torque
convertor retaining strap.
3.Ensure low range gear is engaged.
4.Apply approved sealant to bell housing face.
5.Carefully raise assembly, align bell housing with
flywheel housing and bring mating faces
together.
6.Fit nuts and bolts to secure transmission to
engine.
7.Locate electrical wiring and breather pipes to
position.
8.Secure kick down cable clip to bell housing.
9.Raise hoist sufficiently to take weight.
10.Remove block and jack from engine sump.
11.Fit filler/dipstick tube to gearbox sump and
secure bracket to bell housing.
12.Apply Loctite to torque convertor bolts
13.Working through starter aperture refit the four
torque convertor to flexible drive securing bolts,
rotating crankshaft to gain access to bolt
locations.
14.Refit starter and heatshield.
15.Secure breather pipes and harness with ties.
16.Fit left hand mounting bracket assembly to
gearbox.
17.Raise transmission and support with a suitable
ramp [hoist] jack.
18.Remove two bolts securing transmission to
cradle, lower hoist and remove from under
vehicle.
19.Apply Loctite to above bolts and fit to transfer
gearbox input bearing support plate.
20.Fit chassis cross member.21.Secure gearbox mounting brackets to chassis
cross member.
22.Remove ramp [hoist] jack.
23.Connect electrical leads to differential lock
switch.
24.Connect inhibitor switch multi-plug.
25.Connect selector cable to lever on side of
gearbox.
26.Connect oil cooler pipes to gearbox and secure
retaining bracket to gearbox sump.
27.Secure silencer to chassis and refit exhaust front
pipe.
28.Refit front propeller shaft to transfer gearbox.
29.Refit rear propeller shaft.
See PROPELLER
SHAFTS, Overhaul, Flexible Coupling
30.Connect speedometer cable to transfer gearbox.
31.Refill transfer gearbox with correct grade of
lubricating oil.
See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids
32.Lower ramp [hoist] to ground level.
33.Reconnect turbo-charger hose to inter-cooler.
34.Reconnect top hose to radiator.
35.Refill cooling system with correct mixture of
coolant.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids
36.Reconnect kick down cable to fuel injection
pump.
37.Secure breather pipe clip to rear of cylinder
head.
38.Engage harness with clips along top of
bulkhead.
39.On left hand drive vehicles only, connect
multi-plug to top of brake fluid reservoir.
40.Refit insulation pad to rocker cover and inlet
manifold, secure with oil filler cap.
41.Refit gaiter and knob to transfer gear lever.
42.Select high range gear.
43.Reconnect battery terminals.
44.Refill main gearbox with correct grade of
lubricating oil.
See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids

86ELECTRICAL
50
REPAIR DIGITAL DIESEL SHUT-OFF VALVE (DDS) - 97 MY
Service repair no - 86.77.00
Remove
1.Remove fuel injection pump.
See FUEL
SYSTEM, Repair, fuel injection pump and
timing
2.Drill into 2 break-off screws to a depth of
approximately 5 mm using a 3.2 mm drill.
CAUTION: Use a drill bushing to guide the
drill during the above.
3.Using an 'Easy-out' remove 2 valve retaining
screws and discard.
4.Release DDS valve from fuel shut-off solenoid.
5.Remove protective cap from fuel shut-off
solenoid electrical connection.
6.Remove fuel shut-off solenoid terminal nut and
remove DDS valve.
Refit
7.Position DDS terminal lead to fuel shut-off
solenoid and secure with nut tightened to
2Nm.
8.Position DDS valve to fuel shut-off solenoid .
9.Position clamping plate to DDS valve and tighten
shear bolts simultaneously until heads shear.
10.Fit fuel injection pump.
See FUEL SYSTEM,
Repair, fuel injection pump and timing; Refit
ANTENNA AMPLIFIER - 97 MY
Service repair no - 86.50.29
Remove
1.Remove RH alpine light trim casing.
See
CHASSIS AND BODY, Repair, alpine light
trim casing
2.Release amplifier to sixth light connector and
seal finisher.
3.Remove screw securing amplifier to body and
release from location.
4.Disconnect co-axial cable from amplifier.
5.Disconnect Lucar from amplifier.
6.Remove amplifier.
Refit
7.Fit amplifier, connect co-axial cable and Lucar to
amplifier.
8.Position amplifier to location and secure with
screw.
9.Secure amplifier lead through seal finisher and
connect to sixth light.
10.Fit RH alpine light trim casing.
See CHASSIS
AND BODY, Repair, alpine light trim casing;
Refit