1998 ISUZU TROOPER Service Repair Manual

Page 1657 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE COOLING 6B Ð 3
The cooling system is a pressurized coolant forced
circulation type which consists of water pump, thermostat
cooling fan, radiator and other components. The
circulating coolant

Page 1658 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6B Ð 4 ENGINE COOLING
ANTI-FREEZE SOLUTION
·Relation between Mixing ratio and Freezing point
Freezing temperature of the engine coolant varies
with the ratio of anti-freeze solution in water.
Proper

Page 1659 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE COOLING 6B Ð 5
ON-VEHICLE SERVICE
WATER PUMP
REMOVAL
Preparation
·Drain coolant.
1. P/S pump Drive Belts
·Loosen P/S pump mounting bolt, loosen adjust
bolts and remove the drive belts.
2. AC

Page 1660 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6B Ð 6 ENGINE COOLING
INSTALLATION
7. O-ring
·Set O-ring in water pump body groove.
6. Water Pump Assembly
·Install water pump assembly, and tighten to
specified torque.
20(2.0/14)N·m (Kg·m/lb.ft

Page 1661 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE COOLING 6B Ð 7
THERMOSTAT
REMOVAL
Preparation
·Disconnect battery ground cable.
·Drain coolant from the radiator and engine.
1. Water Hose; Turbocharger (4JG2-T Only)
2. Outlet Pipe
·Remove

Page 1662 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6B Ð 8 ENGINE COOLING
·Make sure that secondary valve opens fully at the
specified temperature.
Make necessary repair and parts replacement if extreme
wear or damage is found during inspection.
INST

Page 1663 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE COOLING 6B Ð 9
RADIATOR
REMOVAL
Preparation
·Disconnect battery ground cable.
·Loosen drain plug to drain coolant.
1. Radiator Hose
·Disconnect lower hose and upper hose from the
engine.
2.

Page 1664 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6B Ð 10 ENGINE COOLING
Radiator Core
·Deformed radiator fins could reduce radiation effects,
resulting in overheat. Straighten the fins. In such a
case, take care not to damage the fin roots.
·Remo