Workshop Manuals Factory service & repair Land Rover
01 02 AMENDMENT INSTRUCTION SHEET03 INTRODUCTION04 GENERAL SPECIFICATION DATA05 ENGINE TUNING DATA06 GENERAL FITTING REMINDERS07 MAINTENANCE08 ENGINE09 FUEL SYSTEM10 COOLING SYSTEM11 MANIFOLD AND EXHAUST SYSTEM12 CLUTCH13 MANUAL GEARBOX14 TRANSFER GEARBOX15 PROPELLER SHAFTS16 REAR AXLE AND FINAL DRIVE17 FRONT AXLE AND FINAL DRIVE18 STEERING19 FRONT SUSPENSION20 REAR SUSPENSION21 BRAKES22 WHEELS AND TYRES23 CHASSIS AND BODY24 HEATING AND VENTILATION25 AIR CONDITIONING26 WIPERS AND WASHERS27 ELECTRICAL28 INSTRUMENTS
Land Rover 300Tdi Defender25 · AIR CONDITIONING
25 · Heating & A/C

AIR CONDITIONING SYSTEM - PERFORMANCE TEST

Make
Land Rover
Model
Defender 300Tdi Defender
Section
AIR CONDITIONING SYSTEM - PERFORMANCE TEST
AIR CONDITIONINGAIR CONDITIONING SYSTEM - PERFORMANCE TEST
background image

AIR CONDITIONING

5

ADJUSTMENT

AIR CONDITIONING SYSTEM - PERFORMANCE
TEST

WARNING: R134a is hazardous

See

Repair, General Precautions

Carry out this test with bonnet and doors or windows
open, air conditioning switched on, temperature
control set to cold and blower at maximum speed. Set
the air supply control to supply fresh air.

1. Close low pressure valve on refrigerant station.
2. Close high pressure valve on refrigerant station.
3. Connect a Refrigerant Station to the high and

low pressure servicing connections.

4. Insert dry bulb thermometer into cold air outlet

and position dry and wet bulb thermometer close
to outside air inlet.
Do not spill water from the wet thermometer
(psychrometer).

5. Start engine and run it at 1500 rev/min for 10

minutes with air conditioning switched on.

6. Read both pressure gauges and thermometers.

Check readings against table below with
humidity between 60% and 80%.

7. Switch off air conditioning, stop engine,

disconnect test equipment.

Performance range

Intake temperature

Outlet temperature

Low pressure

High pressure

20 - 24

°

C

4 - 10

°

C

18 - 28 lbf/in

2

213 - 299 lbf/in

2

1.2 - 1.9 bar

14.7 - 20.6 bar

25 - 29

°

C

9 - 19

°

C

27 - 37 lbf/in

2

256 - 341 lbf/in

2

1.9 - 2.6 bar

17.6 - 23.5 bar

30 - 35

°

C

20 - 27

°

C

33 - 47 lbf/in

2

299 - 384 lbf/in

2

2.3 - 3.2 bar

20.6 - 26.5 bar

Table 1

Ambient

Compound Gauge

High Pressure

Temperature

Readings

Gauge Readings

°

C

°

F

bar

lbf/in

2

bar

lbf/in

2

16

60

1,03-1,4

15-20

6,9-10,3

100-150

26,7

80

1,4-1,72

20-25

9,6-13,1

140-190

38

100

1,72-2,1

25-30

12,4-15,5

180-225

43,5

110

2,1-2,4

30-35

14,8-17,2

215-250

Parts & tools for this job For Land Rover Defender

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