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Defender 90 / 110 / 130. Manual - part 16

MAINTENANCE

Check air cleaner dump valve

The dump valve provides an automatic drain for the air

cleaner and is fitted in the base of the air cleaner
support bracket.

7. Squeeze open the dump valve and check that the

interior is clean.

Also

check that the rubber is

flexible and in a good condition.

necessary, remove the dump valve to clean the

interior. Fit

a new valve if the original is in a poor

condition.

Fit air cleaner

9. Fir air cleaner canister and secure with the clips.

10. Connect the air cleaner hose.

RENEW

AIR

CLEANER

ELEMENT

engine

1. Unscrew the two air cleaner strap retaining nuts.

2. Disconnect the air cleaner hose.

Remove the engine breather hose.

Withdraw air cleaner canister.

Unscrew element wing nut and washer and remove

filter seal.

6. Remove and discard the element.

DO NOT

attempt to clean the element, fit a new one during
reassembly and secure with the wing nut.

Check air cleaner dump valve

Squeeze open the dump valve and check that the

interior is clean.

Also check that the rubber is

flexible and in a good condition.

If necessary, remove the dump valve to clean the

interior.

Fit a new valve if the original is in a poor

condition.

Fit air cleaner

Fit a new element and reassemble the air cleaner.

10.  Fit the air cleaner canister.
11. Fit the breather hose.
12.  Fit the air cleaner hose.
13.  Secure with the retaining straps and nuts.

CLEAN FUEL LIFT PUMP

SEDIMENT BOWL

Petrol engine

early vehicles

1. Remove the bowl by slackening the thumb screw

2. Remove and clean the filter gauze in clean petrol.

Ensure that the sealing washer is in good condition.

Replace gauze and refit the bowl.

5. Prime the pump by operating the hand lever.

and swinging the retainer

one side.

CLEAN ELECTRIC

PUMP FILTER

and

later 2.25 Petrol engine vehicles

The pump

located mid-way along the right hand side

of the chassis.

1. Release the three bolts and remove the protective

cover

except ‘90’ models.

2. From beneath the vehicle disconnect the fuel inlet

pipe

from the pump and blank the end of the pipe

by suitable means t o prevent fuel draining from the
tank.

3. Release the end cover from the bayonet fixing.

4. Withdraw the filter and clean by using a

compressed air

jet from the inside of the filter.

5 .

Remove the magnet (where fitted) from the end
cover and clean. Replace the magnet in the centre
of the end cover.

6 .

Reassemble the fuel pump and refit the fuel inlet

pipe.

7. Use a new gasket for the end cover if necessary.

Fit the protective cover.

RENEW

FUEL FILTER ELEMENT

Petrol engines

4-cylinder and

The element provides a filter between the pump and
carburetter and

located adjacent to fuel pump on the

right hand side of the chassis.

1. Release the three bolts and remove the protective

2. Unscrew the centre bolt.
3 . Withdraw the filter bowl.

4. Remove the small sealing ring and remove the

element.

Withdraw the large sealing ring from the underside

of the filter body.

6. Discard the old element and replace with a new

unit.

7. Ensure that the centre and top sealing rings are in

good condition and replace as necessary.

8. Fit new element, small hole downwards.
9. Refit sealing rings (small and large).

cover. See ‘Clean electric fuel pump filter’.

10. Replace filter bowl and tighten the centre bolt.

RENEW

FILTER ELEMENT

Diesel engines

Drain off Water

FUEL SEDIMENTER

Diesel engines (where fitted)

The sedimenter increases the working life

of the fuel

filter by removing the larger droplets of water and
larger particles of foreign matter from the fuel.

1. Slacken off drain plug to allow water to run out.

2. When pure diesel fuel is emitted, tighten drain

Plug-

MAINTENANCE

Renew filter

3. Support element holder.
4. Unscrew

special bolt on top of the filter, the

element holder can now be removed.

5. Remove and discard the used element.
6 . Wash the element holder in petrol or fuel oil.

If necessary renew both the large rubber washer

and the small rubber washer in the filter top, also
renew the large rubber washer in the element
holder.

8. Push the new

onto the filter top spigot

with the holes in the element to the top.

9. Fit the element holder to the bottom of the

element, and secure with the special bolt.

10. Prime the system and check for fuel leaks.

Drain off Water

1. Slacken off drain plug to allow water to run out.

2. When pure diesel fuel is emitted, tighten drain

plug. Dismantle and clean as detailed below.

101

Clean element

Disconnect fuel inlet pipe at sedimenter and raise
pipe above level of fuel tank to prevent draining

from tank. Support in this

4. Support sedimenter bowl and unscrew bolt on top

of unit and remove bowl.

Remove the sedimenter element.

Clean all parts in kerosene.

Fit new seals and reverse removal procedure.

8. Slacken off the drain plug, when pure diesel fuel

9. If necessary, prime the system.

runs out tighten plug.

10.

Start engine and

for leaks from sedimenter.

MAINTENANCE

RENEW DUCELLIER DISTRIBUTOR

POINTS

4-cylinder engines

Renew Points

Release the spring clips and remove the distributor

cap.

2. Pull off the rotor arm.

Remove the dust shield.

4. Remove the retaining screw and remove the fixed

5 .

Slide the spring clip rearwards.

6. Disconnect the suppressor lead from the connector

7. Disconnect the lead from ignition coil.
8. Remove insulation washer from the moving

contact point.

9. Lift off the moving contact point complete with

leads and connector block from the distributor
body.

contact point.

block.

Fit the new moving point over post.

Locate the leaf spring in

plastic guide.

12.  Fit the insulation washer.
13.  Secure the assembly with the spring clip.
14.  Fit the connector block to the distributor body.

15.

Connect ignition coil lead.

16. Fit suppressor lead to connector block.
17. Fit the fixed contact point and loosely retain with

the screw.

Adjust points

NOTE:

The following two instructions describe the

adjustment of the contact points. The accompanying
illustration shows it being done with the aid of special
tool

Whilst the points can be adjusted to the

datum  setting  only  (see  data)  without  the  tool  full
distributor adjustment,  i.e.  dwell angle,  dwell variation
and vacuum advance can only be achieved by  using this
tool in conjunction with engine diagnostic equipment.  It

is essential that the above adjustments are carried out in
order to maintain correct emission levels and maximum

engine efficiency.

18.

Rotate the engine until a cam of the rotor fully

opens the points.

19. Using a feeler, adjust the position of the fixed

contact point to the datum setting and tighten the
retaining screw.

20. Check and adjust the dwell angle, dwell variation

and vacuum advance.

Content .. 14 15 16 17 ..