Isuzu 1999 RODEO Workshop Manual page 590

6B–8 ENGINE COOLING (X22SE 2.2L)
8. Lift out the radiator assembly with hose, taking care
not to damage the radiator core with fan blade.
9. Remove rubber cushions on both sides at the bottom.
Inspection
Radiator Cap
Measure the valve opening pressure of the pressurizing
valve with a radiator filler cap tester.
Replace the cap if the valve opening pressure is outside
the standard range.
Valve opening pressure kPa (psi) 93.3 ∼ 122.7
(13.5 ∼17.8)
Cap tester: J–24460–01
Adapter: J–33984–A
Check the condition of the vacuum valve in the center of
the valve seat side of the cap. If considerable rust or dirt is
found, or if the valve seat cannot be moved by hand, clean
or replace the cap.
Valve opening vacuum kPa (psi) 1.96 ∼ 4.91
(0.28 ∼ 0.71)
Radiator Core
1. A bent fin may result in reduced ventilation and
overheating may occur. All bent fins must be
straightened. Pay close attention to the base of the fin
when it is being straightened.
2. Remove all dust, bugs and other foreign material.
Flushing the Radiator
Thoroughly wash the inside of the radiator and the engine
coolant passages with cold water and mild detergent.
Remove all sign of scale and rust.
Cooling System Leakage Check
Use a radiator cap tester to force air into the radiator
through the filler neck at the specified pressure of 196 kPa
(28.5 psi) with a cap tester:
f Leakage from the radiator
f Leakage from the coolant pump
f Leakage from the water hoses
f Check the rubber hoses for swelling.
Cap tester: J–24460–01
Adapter: J–33984–A
Installation
1. Install rubber cushions on both sides of radiator
bottom.
2. Install radiator assembly with hose, taking care not to
damage the radiator core with a fan blade.
3. Install bracket and support the radiator upper tank
with the bracket and secure the radiator.
4. Connect reserve tank hose.
5. Install lower fan guide (6).
6. Connect radiator inlet hose and outlet hose to the
engine.
110RS006
110RX002
110RX003