Defender 90 NAS. Manual — part 26
19
FUEL 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.
8. Remove 2 bolts securing pressure regulator to
fuel rail.
9. Remove regulator from fuel rail.
10. Remove and discard ’O’ ring.
11. Release clip and remove fuel hose from
regulator.
CAUTION: Plug the connections.
Refit
12. Clean mating faces of pressure regulator and
fuel rail.
13. Remove plugs from pressure regulator and fuel
rail.
14. Fit fuel hose to regulator and secure with clip.
15. Lubricate new pressure regulator ’O’ ring.
16. Fit regulator to fuel rail.
17. Connect fuel hose to pipe and secure with clip.
18. Fit bolts securing regulator to fuel rail and tighten
to
10 Nm, 7 lbf ft.
19. Position ignition coil mounting bracket to studs.
20. Fit nuts and tighten to
8 Nm, 6 lbf ft.
21. Remove plugs.
22. Connect fuel return hose and secure with clip.
23. Connect vacuum hose.
24. Remove cloth.
25. Reconnect battery negative lead.
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 tool LRT-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 sealing ring to pump and fit pump.
8. Fit locking ring and using tool LRT-19-001,
tighten to
48 Nm, 35 lbf ft.
9. Fit feed and return hoses to pump.
10. Fit breather hose and tighten clip.
11. Fit fuel tank.
See fuel tank; Refit
19
FUEL 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 system.
See Adjustment,
fuel system depressurise
4. Drain fuel tank.
See Adjustment, fuel tank
drain
5. Loosen clip securing filler hose to fuel tank and
disconnect hose.
6. Loosen clip securing breather hose to filler neck
and disconnect hose.
7. Using tool LRT-19-002 disconnect vapour
separator pipe at green end of ’speedfit’
connector.
8. Position cloth to absorb fuel spillage.
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 tank sufficiently to gain access to fuel
pump multiplug.
17. Disconnect multiplug and remove clip securing
harness to fuel hoses.
18. With assistance, lower jack, remove fuel tank
cradle and fuel tank.
Do not carry out further dismantling if component
is removed for access only.
19. Remove 3 screws securing heat shield. Remove
heat shield.
20. Release 2 fuel cut-off valves and remove valve
and pipe assembly. Remove and discard 2
rubber seals.
21. Loosen clip and remove breather hose from fuel
pump.
22. Remove fuel feed and return hoses from fuel
pump.
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