Land Rover Defender 90 Workshop 2nd Edition Nas Rover Manual

19FUEL SYSTEM
12
REPAIR MASS AIR FLOW (MAF) SENSOR
Service repair no - 19.22.25
Remove
1.Loosen clip securing air intake hose to MAF
sensor and disconnect.
2.Disconnect multiplug from sensor.
3.Release 2 clips securing sensor to air cleaner.
4.Remove sensor, collect and discard O ring.
Refit
5.Clean sensor and mating faces.
6.Fit NEW O ring to sensor.
7.Fit sensor to air cleaner and secure clips.
8.Connect multiplug.
9.Connect air intake hose to sensor and tighten
clip.PLENUM CHAMBER
Service repair no -...

SFI
13
REPAIR
10.Disconnect purge hose from plenum chamber.
11.Disconnect breather hose from plenum chamber.
12.Depress spring clip and disconnect TP sensor
multiplug.
13.Disconnect multiplug from IACV.
14.Remove 6 bolts securing plenum chamber to
inlet manifold.
15.Release plenum chamber from inlet manifold.
16.Fit hose clamp to water jacket coolant hoses.
17.Tighten clamp.
18.Position cloth to absorb coolant spillage.
19.Loosen clips securing coolant hoses to plenum
chamber.
20.Release hoses from...

19FUEL SYSTEM
14
REPAIR Refit
33.Position throttle linkage and spring to plenum
chamber.
34.Fit spring to linkage.
35.Hold throttle open to gain access to mounting
bolts.
36.Fit and tighten mounting bolts to
8 Nm, 6 lbf ft.
37.Clean mating faces of TP sensor and plenum
chamber.
38.Fit TP sensor and engage spindle.
39.Fit clamping plate and tighten bolts to
2 Nm, 1.5
lbf ft.
40.Clean mating faces of IACV and plenum
chamber.
41.Fit gasket to IACV.
42.Fit IACV to plenum chamber and tighten bolts to
2 Nm,...

SFI
15
REPAIR IDLE AIR CONTROL VALVE (IACV)
Service repair no - 19.22.54
Remove
1.Disconnect battery negative lead.
2.Disconnect multiplug from IACV.
3.Remove 2 bolts securing IACV to plenum
chamber.
4.Remove IACV.
5.Remove gasket and discard.
Refit
6.Clean mating faces of IACV and plenum
chamber.
7.Clean plunger on IACV and plunger seat on
plenum chamber.
8.Using a new gasket, fit IACV to plenum
chamber.
9.Fit and tighten bolts securing IACV to plenum
chamber to
2 Nm, 1.5 lbf ft.
10.Connect multiplug to...

19FUEL SYSTEM
16
REPAIR FUEL PRESSURE REGULATOR
Service repair no - 19.45.06
Remove
1.Disconnect battery negative lead.
2.Depressurise fuel system.
See Adjustment,
fuel system depressurise
3.Release clip and disconnect fuel return hose
from fuel pipe.
CAUTION: Plug the connections.
4.Disconnect vacuum hose from pressure
regulator.
5.Remove 4 nuts securing coil mounting bracket to
inlet manifold.
6.Release coil mounting bracket from studs and
move aside.
7.Release regulator connecting pipe from clip....

SFI
17
REPAIR FUEL PUMP
Service repair no - 19.45.08
Remove
1.Disconnect battery negative lead.
2.Remove fuel tank.
See fuel tank
3.Loosen clip and disconnect breather hose from
fuel pump.
4.Remove fuel feed and return hoses from fuel
pump.5.Using toolLRT-19-001remove locking ring
securing pump. Withdraw fuel pump from fuel
tank.
WARNING: A quantity of fuel will be
retained in body of pump. Care must be
taken to prevent spillage during above
operation.
6.Remove and discard sealing ring.
Refit
7.Fit new...

19FUEL SYSTEM
18
REPAIR FUEL TANK
Service repair no - 19.55.26
WARNING: Ensure that fuel handling
precautions given in Section 01 -
Introduction are strictly adhered to when
carrying out following instructions.
CAUTION: Before disconnecting any part
of the fuel system, it is imperative that all
dust, dirt and debris is removed from
around components to prevent ingress of foreign
matter into fuel system.
Remove
1.Position vehicle on ramp [hoist].
2.Disconnect battery negative lead.
3.Depressurise fuel...

SFI
19
REPAIR
9.Disconnect fuel feed hose union.
10.Disconnect fuel return hose union.
CAUTION: Plug the connections.
11.Loosen 2 anti-roll [sway] bar link bolts.
12.Mark location of anti-roll [sway] bar straps.
13.Remove 4 bolts securing anti-roll [sway] bar
straps and swing bar down clear of fuel tank.
14.Position transmission jack under fuel tank cradle
to support fuel tank.
CAUTION: Use a block of wood or hard
rubber pad to protect fuel tank.
15.Remove 6 bolts securing fuel tank cradle.
16.Lower fuel...

19FUEL SYSTEM
20
REPAIR
23.Using toolLRT-19-001remove locking ring
securing pump. Withdraw fuel pump from tank.
WARNING: A quantity of fuel will be
retained in body of pump. Care must be
taken to prevent fuel spillage during above
operation.
24.Remove and discard sealing ring.
25.Fit new sealing ring to pump and fit pump.
26.Fit locking ring and using toolLRT-19-001,
tighten to
48 Nm, 35 lbf ft.
27.Fit fuel feed and return hoses to pump.
28.Fit breather hose and tighten clip.
29.Fit new fuel cut-off...

SFI
21
REPAIR FUEL RAIL
Service repair no - 19.60.04
Remove
1.Disconnect battery negative lead.
2.Depressurise fuel system.
See Adjustment,
fuel system depressurise
3.Remove ram housing.See ram housing
4.Disconnect 8 injector multiplugs.
5.Disconnect fuel temperature sensor multiplug.
6.Position cloth around fuel feed pipe union to
absorb any fuel spillage.
7.Disconnect fuel feed pipe from fuel rail.
8.Plug fuel pipe and rail.
9.Loosen clip securing fuel return hose to fuel rail
and disconnect hose....