Defender 90 NAS. Instruction - page 9

GENERAL FITTING REMINDERS

7

INFORMATION

COTTER PINS

1. Fit new cotter pins throughout when replacing

any unit.

2. Always fit cotter pins where cotter pins were

originally used. Do not substitute spring
washers: there is always a good reason for the
use of a cotter pin.

3. All cotter pins should be fitted as shown unless

otherwise stated.

NUTS

1. When tightening a slotted or castellated nut

never loosen it to insert cotter pin or locking wire
except in those recommended cases where this
forms part of an adjustment. If difficulty is
experienced, alternative washers or nuts should
be selected, or washer thickness reduced.

2. Where self-locking nuts have been removed it is

advisable to replace them with new ones of the
same type.

NOTE: Where bearing pre-load is involved
nuts should be tightened in accordance
with special instructions.

LOCKING WIRE

1. Fit new locking wire of the correct type for all

assemblies incorporating it.

2. Arrange wire so that its tension tends to tighten

the bolt heads, or nuts, to which it is fitted.

SCREW THREADS

1. Both UNF and Metric threads to ISO standards

are used. See below for thread identification.

2. Damaged threads must always be discarded.

Cleaning up threads with a die or tap impairs the
strength and closeness of fit of the threads and
is not recommended.

3. Always ensure that replacement bolts are at

least equal in strength to those replaced.

4. Do not allow oil, grease or jointing compound to

enter blind threaded holes. The hydraulic action
on screwing in the bolt or stud could split the
housing.

5. Always tighten a nut or bolt to the recommended

torque value. Damaged or corroded threads can
affect the torque reading.

6. To check or re-tighten a bolt or screw to a

specified torque value first loosen a quarter of a
turn, then re-tighten to the correct value.

7. Oil thread lightly before tightening to ensure a

free running thread, except in the case of
threads treated with sealant/lubricant, and
self-locking nuts.

07

GENERAL FITTING REMINDERS

8

INFORMATION

UNIFIED THREAD IDENTIFICATION

1. Bolts

A circular recess is stamped in the upper surface
of the bolt head.

2. Nuts

A continuous line of circles is indented on one of
the flats of the hexagon, parallel to the axis of
the nut.

3. Studs, Brake Rods, etc.

The component is reduced to the core diameter
for a short length at its extremity.

LUBRICANTS, FLUIDS AND CAPACITIES

1

INFORMATION

RECOMMENDED LUBRICANTS AND FLUIDS

AMBIENT TEMPERATURE

°

C

COMPONENT

SPECIFICATION

VISCOSITY

-30

-20

-10

0

10

20

30

40

50

Engine V8i

Use oils to API

5W/20

service level
SG, SH

5W/30

or

5W/40

RES.22.OL.G4
or
ACEA A2:96

10W/30

10W/40
10W/50

15W/40
15W/50

20W/40
20W/50

Automatic gearbox

ATF Dexron IID

Final drive units

API or GL5

90 EP

Swivel pin
housings*

MIL - L - 2105 or

MIL - L - 2105B, C
or D

80W EP

LT 230

API GL4 or GL5

90 EP

transfer gearbox

MIL - L - 2105 or
MIL - L - 2105B

Power steering

ATF Dexron IID

Brake reservoir

Brake fluid must have a minimum
boiling point of 260

°

C (500flF) and

comply with FMVSS/116/DOT 4

Lubrication nipples
(hubs, ball joints,
etc.)

NLGI-2 multipurpose lithium based
grease

* Swivel pin housings with filler, level and drain plugs.

See table on page 2 for remaining vehicle components

09

LUBRICANTS, FLUIDS AND CAPACITIES

2

INFORMATION

Swivel pin housings
**

Molytex EP 00 GREASE to specification XP153

Propeller shaft Front
and Rear

NLGI - 2 Multi-purpose Lithium based GREASE

Lubrication nipples
(hubs, ball joints
etc.)
Seat slides
Door lock striker

Brake reservoir

Brake fluids having a minimum boiling point of 260

°

C (500

°

F) and complying with

FMVSS 116 DOT4

Engine coolant

Use an ethylene glycol based anti-freeze (containing no methanol)

V8i (aluminium)

with non-phosphate corrosion inhibitors suitable for use in aluminium engines to ensure
the protection of the cooling system against frost and corrosion in all seasons. Use one
part anti-freeze to one part water for protection down to -36

°

C (-33

°

F).

IMPORTANT: Coolant solution must not fall below proportions one part
anti-freeze to three parts water, i.e. minimum 25% anti-freeze in coolant otherwise
damage to engine is liable to occur. Or a maximum of 60%.

Battery lugs,

Petroleum jelly.

Earthing surfaces

NOTE: Do not use Silicone Grease

where paint has
been removed

Air Conditioning
System Refrigerant

Use only refrigerant R134a

Compressor Oil

Nippon Denso ND-OIL8

Unipart ND-OIL8

Speed sensor

Silicone grease: Staborags NBU - Wabco 830 502,0634

bush-rear

Wacker chemie 704 - Wabco 830 502,0164
Kluber GL301

** Swivel pin housings having a filler plug only.

LUBRICATION PRACTICE

Use a high quality oil of the correct viscosity range and service classification in the engine during maintenance and
when topping up. The use of oil not to the correct specification can lead to high oil and fuel consumption and
ultimately to damaged components.

Oil to the correct specification contains additives which disperse the corrosive acids formed by combustion and
prevent the formation of sludge which can block the oilways. Additional oil additives should not be used. Always
adhere to the recommended servicing intervals.

WARNING: Many liquids and other substances used in motor vehicles are poisonous. They must
not be consumed and must be kept away from open wounds. These substances, among others,
include anti-freeze windscreen washer additives, lubricants and various adhesives.

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