Defender 90 NAS. Manual — part 4

04

GENERAL SPECIFICATION DATA

2

INFORMATION

Pistons

Clearance in bore, measured at bottom
of skirt at right angles to piston pin

0,020-0,050 mm

. . . . . . . . ...

0.0008-0.0020 in

Piston rings

Number of compression rings

2

. . . . . . . . . . ..

Number of control rings

1

. . . . . . . . . . . . .

No 1 compression ring

Molybdenum barrel faced

. . . . . . . . . . . . . .

No 2 compression ring

Tapered and marked ’T’ or ’TOP’

. . . . . . . . . . . . . .

Width of compression rings

1,48-1.49 mm

. . . . . . . . . . . ..

0.058-0.059 in

Top

1,21-1,23 mm

. . . . . . . . . . . . . . . . . . ..

0.047-0.048 in

Compression ring gap

0,40-0,65 mm

. . . . . . . . . . . . . ..

0.016-0.26 in

Top

0.3-0.5 mm

. . . . . . . . . . . . . . . . . . ..

0.012-0.020 in

Oil control ring type

Aclonoform

. . . . . . . . . . . . . . ..

Oil control ring width

3,0 mm

. . . . . . . . . . . . . . .

0.118 in

Oil control ring rail gap

0,38-1,40 mm

. . . . . . . . . . . . . .

0.015-0.055 in

Camshaft

Location

Central

. . . . . . . . . . . . . . . . . . ...

Number of bearings

5

. . . . . . . . . . . . . . ..

Bearing type

Tin-aluminium - Non serviceable

. . . . . . . . . . . . . . . . . .

Camshaft end-float

0.

. . . . . . . . . . . . . . ...

Drive

Chain 9,52 mm pitch x 54 pitches.

. . . . . . . . . . . . . . . . . . . . .

Tappets

Type

Hydraulic-self-adjusting

. . . . . . . . . . . . . . . . . . . . .

Valves

Length:

Inlet

116,59-117,35 mm

. . . . . . . . ..

4.590-4.620 in

Exhaust

116,59-117,35 mm

. . . . . . ...

4.590-4.62 in

Seat angle:

Inlet

45

°

to 45

°

25’

. . . . . . . . ..

Exhaust

45

°

to 45

°

25’

. . . . . . ...

Head diameter:

Inlet

39,75-40,00 mm

. . . . . . . . ..

1.565-1.575 in

Exhaust

34,23-34,48 mm

. . . . . . ...

1.347-1.357 in

Stem diameter:

Inlet

8,664-8,679 mm

. . . . . . . . ..

0.341-0.342 in

Exhaust

8,651-8,666 mm

. . . . . . ...

0.340-0.341 in

Stem to guide clearance:

Inlet

0,025-0,066 mm

. . . . . . . . ..

0.001-.0026 in

Exhaust

0,038-0,078 mm

. . . . . . ...

0.0015-0.003 in

Valve lift (Inlet and Exhaust)

9,94 mm

. . . . . . . . . . .

0.391 in

Valve spring fitted length at pressure of 29,5 kg, 65 lb

40,4 mm

.

1.590 in

Lubrication

System type

Wet sump, pressure fed

. . . . . . . . . . . . . . . . . .

Oil pump type

Eccentric rotor

. . . . . . . . . . . . . . . . ...

Oil pressure at 2400 rev/min with engine
at running temperature

2.1 - 2.8 bar

. . . . . . . . . . . . . .

30 - 40 lb/in

2

Oil filter - internal

Wire screen, pump intake filter.

. . . . . . . . . . . . . . . ..

Oil filter - external

Full flow, self-contained cartridge

. . . . . . . . . . . . . . . .

GENERAL SPECIFICATION DATA

3

INFORMATION

ENGINE MANAGEMENT SYSTEM (GEMS)

Fuel system type

Sagam-Lucas Gems hot wire system electronically

. . . . . . . . . . . . . . . ..

controlled

Fuel pump-make/type

High pressure electrical, immersed in the fuel tank

. . . . . . . . . . . . . ..

Fuel pump delivery pressure

2.4-2.6 bar

. . . . . . . . . . .

34-37 lbf/in

2

Fuel filter

In-line filter ’canister’ type

. . . . . . . . . . . . . . . . . . ..

Mass air flow sensor (MAF)

Make and type

Lucas ’Hot Wire’ 20AM

. . . . . . . . . . . . . . . . .

Injectors

Make and type

Lucas D1000

. . . . . . . . . . . . . . . . .

Engine Control Module (ECM)

Make and type

Lucas GEMS 8.2

. . . . . . . . . . . . . . . . .

Fuel pressure regulator

Make and type

Lucas 8RV

. . . . . . . . . . . . . . . . .

Fuel temperature sensor

Make and type

Lucas 6TT

. . . . . . . . . . . . . . . . .

Coolant temperature sensor

Make and type

Lucas 8TT

. . . . . . . . . . . . . . . . .

Bypass air valve (Stepper motor)

Make and type

Lucas 3ACM

. . . . . . . . . . . . . . . . .

Throttle position sensor

Make and type

Lucas 3TP

. . . . . . . . . . . . . . . . .

Heated oxygen sensor

Make and type

Lucas 4LS - heated

. . . . . . . . . . . . . . . . .

Camshaft position sensor

Make and Land Rover part no.

Honeywell ERR2261

. . . . . . . . . . .

Crankshaft position sensor

Make and type

Lucas 4CS

. . . . . . . . . . . . . . . . .

Knock sensor

Make and type

Lucas 2KS

. . . . . . . . . . . . . . . . .

04

GENERAL SPECIFICATION DATA

4

INFORMATION

Intake air temperature sensor

Make and type

Lucas 10TT

. . . . . . . . . . . . . . . . .

Ignition coils

Make and type

Lucas 2DIS2

. . . . . . . . . . . . . . . . .

COOLING SYSTEM

Type

Pressurized system with cross-flow radiator and

. . . . . . . . . . . . . . . . . . . . .

remote header tank, thermostat control, pump and fan
assisted. Water and antifreeze mixture as coolant.

Type of pump

Centrifugal impellor, belt driven

. . . . . . . . . . . . . . . . ...

Thermostat

88

0

C

. . . . . . . . . . . . . . . . . ...

190

0

F

Expansion tank cap pressure - system pressure

1.0 bar

. . . .

15 lbf/in

2

Fan and viscous coupling assembly

11 blade axial flow 433mm, 17 in diameter.

. . . . . . . .

GENERAL SPECIFICATION DATA

5

INFORMATION

AUTOMATIC TRANSMISSION

Automatic gearbox

Model

ZF4HP22

. . . . . . . . . . . . . . . . . . . ...

Type

Four speed and reverse epicylic gears with fluid

. . . . . . . . . . . . . . . . . . . . .

torque converter and lock-up

Transfer gearbox

LT230Q

Two speed reduction on main gearbox output, front

. . . . . . . . . . . . . . . . . . .

and rear drive permanently engaged.

Transfer gearbox ratios:

High

1.211:1

. . . . . . . . . . . . . . . . . . .

Low

3.269:1

. . . . . . . . . . . . . . . . . . .

Automatic gearbox ratios

4th

0.728:1

. . . . . . . . . . . . . . . . . . ...

3rd

1.000:1

. . . . . . . . . . . . . . . . . . ...

2nd

1.480:1

. . . . . . . . . . . . . . . . . . ..

1st

2.480:1

. . . . . . . . . . . . . . . . . . ...

Reverse

2.086:1

. . . . . . . . . . . . . . . . ...

Overall ratios - final drive

High transfer

. . . . . . . . . . . ..

Low transfer

4th

3.46:1

. . . . . . . . . . . . . . . . . . ...

9.34:1

3rd

4.75:1

. . . . . . . . . . . . . . . . . . ...

12.83:1

2nd

7.03:1

. . . . . . . . . . . . . . . . . . ..

18.98:1

1st

11.78:1

. . . . . . . . . . . . . . . . . . ...

31.80:1

Reverse

9.91:1

. . . . . . . . . . . . . . . . ...

26.75:1

Propeller shafts

Type
Front

Solid bar 28.6mm, 1.125 in diameter

. . . . . . . . . . . . . . . . . . . . .

Rear

Tubular 51mm, 2.00 in diameter

. . . . . . . . . . . . . . . . . . . . .

Universal joints

Open type Hookes O3EHD

. . . . . . . . . . . . . . . . .

Rear axle

Type

Spiral bevel, fully floating shafts

. . . . . . . . . . . . . . . . . . . . .

Ratio

3.54:1

. . . . . . . . . . . . . . . . . . . . .

Front axle

Type

Spiral bevel, enclosed constant velocity joints, fully

. . . . . . . . . . . . . . . . . . . . .

floating shafts

Angularity of universal joint on full lock

32

°

. . . . . . .

Ratio

3.54:1

. . . . . . . . . . . . . . . . . . . . .