1998 ISUZU TROOPER Radiator capacity

AIR CONDITIONING 1B Ð 5
With some compressors the differential between
the intake pressure and discharge pressure
generated while the compressor is operating is
used for lubrication instead of an oil pump.
The specified amount of the DKV-14D, DKS-15CH
and HD6 compressors oil is 150cc (4.2 Imp fl oz).
Also, compressor oil to be used varies according to
the compressor model. Be sure to avoid mixing
two or more different types of oil.
If the wrong oil is used, lubrication will be poor and
the compressor will seize or malfunction.
The magnetic clutch connector is a waterproof type.
MAGNETIC CLUTCH
The compressor is driven by the drive belt from the
crank pulley of the engine. If the compressor is
activated each time the engine is started, this
causes too much load to the engine. The magnetic
clutch transmits the power from the engine to the
compressor and activates it when the air
conditioning is ÒONÓ. Also, it cuts off the power
from the engine to the compressor when the air
conditioning is ÒOFFÓ. (Magnetic clutch repair
procedure can be found in Section 1D.)
CONDENSER
The condenser assembly in front of the radiator,
which carry the refrigerant and cooling fins to
provide rapid transfer of heat.
Also, it functions to cool and liquefy the high-
pressure and high-temperature vapor sent from the
compressor by the radiator fan or outside air.
A condenser may malfunction in two ways: it may
leak, or it may be restricted. A condenser restriction
will result in excessive compressor discharge
pressure. If a partial restriction is present, the
refrigerant expands after passing through the
restriction.
Thus, ice or frost may from immediately after the
restriction. If air flow through the condenser or
radiator is blocked, high discharge pressures will
result. During normal condenser operation, the
refrigerant outlet line will be slightly cooler than the
inlet line.
The vehicle is equipped with the condenser of the
parallel flow type condenser. A larger thermal
transmission area on the inner surface of the tube
allows the radiant heat to increase and the
ventilation resistance to decrease.
The refrigerant line connection has a bolt at the
block joint, for easy servicing.
RECEIVER/DRIER
The receiver/drier performs four functions;
·As the quantity of refrigerant circulated varies
depending on the refrigeration cycle conditions,
sufficient refrigerant is stored for the refrigera-
tion cycle to operate smoothly in accordance
with fluctuations in the quantity circulated.
·The liquefied refrigerant from the condenser is
mixed with refrigerant gas containing air
bubbles. If refrigerant containing air bubbles is
sent to the expansion valve, the cooling
capacity will decrease considerably. Therefore,
the liquid and air bubbles are separated and
only the liquid is sent to the expansion valve.
·The receiver/drier utilizes a filter and dryer to
remove the dirt and water mixed in the cycling
refrigerant.
·The sight glass, installed atop the receiver/
drier, show the state of the refrigerant.
A receiver/drier may fail due to a restriction inside
the body of the unit. A restriction at the inlet to the
receiver/drier will cause high pressures.
Outlet restrictions will be indicated by low pressure
and little or no cooling. An excessively cold
receiver/ drier outlet may indicate a restriction.
The receiver/drier of this vehicle is made of
aluminum with a smaller tank. It has 300 cc
(8.5 Imp fl oz) refrigerant capacity.
The refrigerant line connection has a bolt at the
block joint, for easy servicing.
DKV-14D TYPE
DKS-15CH TYPE
HD6 TYPE
Magnetic clutch
CompressorSuction side
Discharge side
Compressor Magnetic clutch
852RW031 871RY00012
871RY00011

ENGINE COOLING6B±13
Main Data and Specifications
General Specifications
M/TA/T
Cooling systemEngine coolant forced circulation
Radiator(1 tube in row) Tube type corrugated (2 tube in row)
Heat radiation capacity68,000 kcal/h77,000 kcal/h
Heat radiation area9.445m
(0.878ft
)11.21m
(1.04ft
)
Radiator front area0.302m
(0.028ft
)
Radiator dry weight39N (8.8lb)44N (9.9lb)
Radiator cap valve opening pressure93.3 ~ 122.7kpa (13.5 ~ 17.8psi)
Engine coolant capacity2.5lit (2.6U.S q.t.)2.4lit (2.5U.S q.t.)
Engine coolant pumpCentrifugal impeller type
Delivery300 (317) or more
Pump speed5000 + 50 rpm
ThermostatWax pellet type with air hole
Valve opening temperature74.5 ~ 78.5
C (166.1 ~ 173.3
F)
Engine coolant total capacity10.4lit (11.0U.S qt)10.5lit (11.1U.S qt)
Torque Specifications
N´m (Kg´m/lb ft)

E06RW041

SERVICE INFORMATION 00 Ð 21
Engine Cooling
Starting System
Cooling system
Radiator
Heat radiation capacity
Heat radiation area
Front area
Dry weight
Radiator cap
Valve opening pressure
Coolant capacityCoolant forced circulation
(2 tube in row) Tube type corrugated
318 x 10 (76000)
15.63 (1.454)
0.309 (2.029)
83 (8.5/18.7 )
88.2~117.6 (0.899~1.199/12.78~17.05)
2.8 (2.46/2.96) J/h (kcal/h)
m
2 (ft2 )
m
2 (ft2 )
N(Kg/lb)
kPa(Kg/cm
2psi)
lit (Imp.qt./US qt.)
Coolant pump
Pulley ratioCentrifugal impeller type
1.2
Coolant total capacity
lit (Imp.qt./US qt.)8.6 (7.57/9.09)
6
Rating
Voltage
Output
Time
Number of tooth of pinion
Rotating direction (as viewed from pinion)
Weight (approx.)
No-load characteristics
Voltage/current
Speed
Load characteristics
Voltage/current
Torque
Speed
Locking characteristics
Voltage/current
Torque
Model HITACHI S14-03
V
kw
sec12
30
9
Clockwise
N (kg/lb)
59 (6.0/13.2)
V/A
rpm11/160 or less
3900 or more
V/A
N•m (kg•m/lb•ft)
rpm10.85/300
7.4 (0.75/5.4) or more
2000 or more
V/A
N•m (kg•m/lb•ft)3/1300 or less
26 (2.7/20) or more
11.5/120 or less
4000 or more
7.5/500
13 (1.3/9) or less
1400 or more
2/850 or less
16 (1.6/12) or more2.2 2.8DENSO ADR4G1

00 Ð 30 SERVICE INFORMATION
Fuel Filter Water Draining Procedure
The indicator light will come on when the water level in the
water separator exceeds the specified level.
Drain the water and foreign material from the water separa-
tor with the following procedure.
1. Find a safe place to park the vehicle.
2. Open the engine hood and place a container (Approxi-
mately 0.2 liter capacity) at the end of the vinyl hose
beneath the drain plug on the separator.
3. Loosen the drain plug by turning it counterclockwise
(Approximately 5 turns) and operate the priming pump
up and down about 10 times until water is drained
approximately 0.1 liter.
4. After draining, securely tighten the drain plug by turn-
ing it clockwise and operate the priming pump manu-
ally up and down several times.
5. After starting the engine, check to see that there is no
fuel leak from the drain plug.
Also check to see that the fuel filter water indicator light
has turned off.
If water separator requires frequent draining, have the
fuel tank drained for removal of water at your Isuzu
Dealer.
Air Bleeding
1. Loosen the bleeder screw on the injection pump over-
flow valve.
2. Operate the priming pump until fuel mixed with foam
flows from the bleeder screw.
3. Tighten the bleeder screw.
4. Operate the priming pump several times and check for
fuel leakage.
COOLING SYSTEM
Coolant Level
Check the coolant level and replenish the radiator reserve
tank as necessary.
If the coolant level falls below the ÒMINÓ line, carefully check
the cooling system for leakage. Then add enough coolant to
bring the level up to the ÒMAXÓ line.
NOTE:
Do not overfill the reserve tank.

6A – 4 ENGINE MECHANICAL
Engine Cooling
Starting System
Cooling system Coolant forced circulation
Radiator (2 tube in row) Tube type corrugated
Heat radiation capacity J/h (kcal/h) 318 x 10
6(76000)
Heat radiation area m
2(ft2) 15.63 (1.454)
Front area m
2(ft2) 0.309 (2.029)
Dry weight N (kg/lb) 83 (8.5/18.7)
Radiator cap
Valve opening pressure kPa (kg/cm
2/ psi) 93.3 – 122.7 (0.95 – 1.25/13.5 – 17.8)
Coolant capacity lit (Imp.qt./US qt.) M/T 2.5 (2.2/2.6) A/T 2.4 (2.1/2.5)
Coolant pump Centrifugal impeller type
Pulley ratio (to 1) 1.2
Coolant total capacity lit (Imp.qt./US qt.) 9.3 (8.2/9.8)
Model HITACHI S14-0
Rating
Voltage V 12
Output kW 2.8
Time sec 30
Number of teeth of pinion 9
Rotating direction (as viewed from pinion) Clockwise
Weight (approx.) N(kg/lb) 49 (5.0/11)
No-load characteristics
Voltage/current V/A 11/160 or less
Speed rpm 4000 or more
Load characteristics
Voltage/current V/A 8.76/300
Torque N·m(kg·m/lb·ft) 7.4 (0.75/5.4) or more
Speed rpm 1700 or more
Locking characteristics
Voltage/current V/A 2.5/1100 or less
Torque N·m(kg·m/lb·ft) 18.6 (1.9/14) or more