Defender 90 NAS. Instruction - page 24

19

FUEL SYSTEM

8

REPAIR

AIR CLEANER ELEMENT

Service repair no - 19.10.10

Remove

1. Release 3 toggle clips and remove inlet tube.
2. Remove nut and end plate retaining air cleaner

element.

3. Remove air cleaner element and discard.

Refit

1. Clean inlet tube and inside of air cleaner.

2. Squeeze open dump valve fitted at base of air

cleaner and check that rubber is flexible and in
good condition. Replace if necessary.

3. Fit new air cleaner element.
4. Fit retaining plate and fit and tighten nut.
5. Fit intake tube and secure toggle clips.

THROTTLE CABLE

Service repair no - 19.20.06

Remove

1. Remove split pin and clevis pin securing cable to

throttle lever.

2. Release cable adjusting nut from abutment

bracket.

3. Remove split pin and clevis pin securing cable to

throttle pedal.

4. Release cable from bulkhead and remove cable.

SFI

9

REPAIR

Refit

5. Clean area around cable hole in bulkhead.
6. Position cable and secure to bulkhead.
7. Clean and lubricate clevis pin.
8. Align inner cable to throttle pedal, fit clevis pin

and secure with NEW split pin.

9. Secure outer cable to abutment bracket.

10. Clean and lubricate clevis pin.
11. Adjust outer cable and align inner cable yoke to

throttle lever.

12. Fit clevis pin and secure with new split pin.
13. Adjust outer cable to give 1.6 mm, 0.06 inch of

free play in inner cable.

14. Check throttle operation.

FUEL TEMPERATURE SENSOR

Service repair no - 19.22.08

Remove

NOTE: Because fuel leakage will not occur
when sensor is removed, it is not
necessary to depressurise the fuel system

for this operation.

1. Release and move brake servo vacuum pipe

aside for access to fuel temperature sensor.

2. Disconnect multiplug from fuel temperature

sensor.

3. Remove sensor.

Refit

4. Clean threads of sensor and mating face on fuel

rail,

5. Fit sensor and tighten to

17Nm, 13 lbf ft.

6. Connect multiplug and vacuum pipe.

19

FUEL SYSTEM

10

REPAIR

HEATED OXYGEN SENSOR (HO2S) - FRONT

Service repair no - 19.22.16

Remove

CAUTION: The sensor must only be
removed when the exhaust pipe is cold.

1. Position vehicle on ramp [hoist].
2. Remove clip securing oxygen sensor lead to

harness.

3. Release sensor multiplug from bracket behind

cylinder head.

4. Disconnect multiplug.
5. Raise ramp [hoist].

6. Remove sensor using tool LRT-12-047.

CAUTION: Although robust within the
vehicle enviroment, HO2 sensors are
easily damaged by dropping, excessive

heat and contamination. Care must be exercised
when working on the exhaust system not to
damage the sensor housing or tip.

7. Remove and discard sealing washer.

Refit

8. Clean sensor mating face on exhaust pipe.

NOTE: The new sensor thread is
pre-treated with an anti-seize compound. If
refitting old sensor, fit NEW sealing

washer and apply anti-seize compound to threads.

CAUTION: Do not allow anti-seize
compound to come into contact with the
sensor nose or enter the exhaust system.

9. Fit sealing washer to sensor and fit sensor.

Tighten sensor to

20 Nm, 15 lbf ft.

10. Lower ramp [hoist].
11. Connect multiplug and secure to bracket.
12. Secure lead to harness with clip.

SFI

11

REPAIR

HEATED OXYGEN SENSOR (HO2S) - REAR

Service repair no - 19.22.17

Remove

CAUTION: The sensor must only be
removed when the exhaust pipe is cold.

1. Position vehicle on ramp [hoist].

2. Release sensor multiplug from bracket.
3. Disconnect multiplug.
4. Raise ramp [hoist].

5. Remove sensor using tool LRT-12-047.
6.
Remove and discard sealing washer.

Refit

7. Clean sensor mating face on exhaust pipe.

NOTE: The new sensor thread is
pre-treated with an anti-seize compound. If
refitting old sensor, fit NEW sealing

washer and apply anti-seize compound to threads.

CAUTION: Do not allow anti-seize
compound to come into contact with the
sensor nose or enter the exhaust system.

8. Fit sealing washer to sensor and fit sensor.

Tighten sensor to

20 Nm, 15 lbf ft.

9. Connect multiplug and secure to bracket.

10. Lower ramp [hoist].

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