Isuzu N-Series. Service manual — part 50
SERVICE INFORMATION 00-31
For Australia
For Taiwan
Electronic Thermostat
1. With the air select lever set to “VENT” and the air
source select lever to “CIRC”, start the air condi-
tioning.
2. While shifting the temperature control lever from
“FULL COOL” through the “FULL HOT”, check to
see if the magnetic clutch turns on and off.
(*Note that the time required to reach the “OFF”
point depends on the warm or cold air at 3.5
±
0.5
°C at the electronic thermostat thermo sensor).
3. While the magnetic clutch is turning “ON” and
“OFF”, measure the voltage between chassis side
connector terminal No. 1 and No. 2.
N1A0157E
N1A0012E
Terminal No.
Magnetic CIutch
Voltage
1 — 2
ON
0 V
OFF
Battery voltage
N1A0013E
00-32 SERVICE INFORMATION
MAIN DATA AND SPECIFICATIONS
HEATER UNIT
Temperature control
Reheat mix system
Capacity
kW (kcal) 4.30 (3,700)
Air flow
(m
3
/hr) 280
HEATER CORE
Type
Fin & tube type
EVAPORATOR ASSEMBLY
Capacity
kW (kcal) 4.47 (3,850)
Air flow
(m
3
/hr) 420
EVAPORATOR CORE
Type
AI-laminate louver fin type
EXPANSION VALVE
Type
External pressure equalizer type
THERMOSTAT SWITCH
Type
Electronic thermostat
°C (°F) OFF: Below 3.5 ± 0.5 (38.3 ± 0.9)
ON: Above 5.0
± 0.5 (41.0 ± 0.9)
CONDENSER
Type Parallel
flow
Radiator performance
kW (kcal) 11.0 (9,500) - NPR, NKR (for GCC)
5.1 (4,400) - NKR (for Taiwan), NPR (for Australia)
RECEIVER/DRIER
Internal volume
cc (lmp. fl oz) 300 (8.5) - NKR (for Taiwan), NPR (for Australia)
250 (7.1) - NKR, NPR (for GCC)
PRESSURE SWITCH
Type
Dual pressure switch (for GCC and Taiwan)
kPa (kg/cm
2
/ PSI)
• Low pressure control (for GCC)
ON: 206
± 30 (2.1 ± 0.3 / 30 ± 4)
OFF: 177
± 25 (1.8 ± 0.2 / 26 ± 3)
• High pressure control (for GCC)
ON: 2350
± 200 (24.0 ± 2.0 / 341 ± 29)
OFF: 2940
± 200 (30.0 ± 2.0 / 426 ± 29)
• Low pressure control (for Taiwan)
ON: 221
± 20 (2.25 ± 0.2 / 32 ± 3)
OFF: 196
± 20 (2.0 ± 0.2 / 28 ± 3)
• High pressure control (for Taiwan)
ON: 2350
± 200 (24.0 ± 2.0 / 341 ± 29)
OFF: 2940
± 200 (30.0 ± 2.0 / 426 ± 29)
SERVICE INFORMATION 00-33
Triple pressure switch (for Australia)
• Low pressure control
ON: 206
± 30 (2.1 ± 0.3 / 30 ± 4)
OFF: 177
± 25 (1.8 ± 0.2 / 26 ± 3)
• Medium pressure control
ON: 1470
± 100 (15 ± 1.0 / 213 ± 14)
OFF: 1079
± 120 (11 ± 1.2 / 156 ± 17)
• High pressure control
ON: 2350
± 200 (24.0 ± 2.0 / 341 ± 29)
OFF: 2940
± 200 (30.0 ± 2.0 / 426 ± 29)
REFRIGERANT
g (lbs) R-134a / 450 (0.99) (for GCC)
Type/Specified amount
R-134a / 600 (1.32) (for Australia, Taiwan)
COMPRESSOR
Model
DKS-15-D (except Taiwan)
DKS-13CH (for Taiwan)
Swash plate type (except Taiwan)
Number of cylinder
10
Bore
mm (in) 30.5 (1.2)
Stroke
mm (in) 21.4 (0.8)
Displacement
cc (lmp fl oz) 156 (4.4)
Swash plate type (for Taiwan)
Number of cylinder
6
Bore mm
(in) 36
(1.42)
Stroke
mm (in) 21.4 (0.84)
Displacement
cc (lmp fl oz) 131 (3.7)
Maximum speed
(rpm) 7,000 (up to 8,400)
Direction of rotation
Clockwise (Front-side view)
Lubrication system
Pressure differential type
Lubricant
cc (lmp fl oz) ZXL-100PG / 180 (5.0)
(ISUZU PART NO. 8-97101-338-0)
Shaft seal
Lip type
Weight
kg (lbs) 4.4 (9.7) (except Taiwan)
4.1 (9.0) (for Taiwan)
MAGNETIC CLUTCH
Type
Electromagnetic single-plate dry clutch
Rated voltage
12 (24) Volts D.C.
Starting torque
N
⋅m (kg⋅m / lb⋅ft) 49 (5.0 / 36)
Direction of rotation
Clockwise (Front-side view)
Weight
kg (lbs) 2.1 (4.6)
00-34 SERVICE INFORMATION
FIXING TORQUE
Refrigerant Line Fixing Torque (Except 4HK1-TC Engine Model For Australia)
15 (1.5/11)
15 (1.5/11)
6 (0.6/4)
15 (1.5/11)
25 (2.5/18)
N1A0014E
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