Isuzu KB P190. Manual - part 519

6A-62 ENGINE MECHANICAL (C24SE) 

Installation 

  1.  Install new pressure valve into cylinder head - with 

suitable pipe until stop. 

 

 

  2.  Install core hole plugs into cylinder head - with suitable 

pipe to end of chamfer. 

 

ENGINE MECHANICAL (C24SE) 6A-63 

OPERATIONS ON COOLING SYSTEM 

 

Caution! 

Before working with the cooling system, be sure to confirm that 

the temperature of the engine is cooled down. 

Failure to observe this may cause burn. 

 

 

 

 

 
 
 
 

 

Cooling System, Check for Leaks 

Installation 

  1.  Install commercially available coolant checking 

instrument onto compensation tank (Refer to section 6B; 
Engine cooling). 

  2.  Check coolant level. 

 

Inspection 

Use 5-8840-0277-0 tester & 5-8840-2603-0 adaptor. 

 

 

 

 

Cooling System, Fill Up and Bleed 

Important! 

Radiator and heater core are made from alminium. 

To avoid corrosion, use only anti-freeze with corrosion 

protection. 

 

 

 

Replace Coolant 

  1.  Confirm the engine is cold enough. 

  2.  Open the radiator cap, pour coolant to the filler neck level 

and close the cap. 

  3.  Pour coolant into the reservoir until MAX line is reached.

  4.  Start the engine, run 2 

∼ 3 minutes at idling speed and 

switch off the engine. 

  5.  Refill coolant if the coolant level is lowered. 

 

6A-64 ENGINE MECHANICAL (C24SE) 

 

Important! 

Do not loosen or open the radiator cap when coolant is hot. 
Doing so may cause hot water or steam to splash out, resulting 
in burn. When opening the radiator cap, be sure to confirm the 
coolant is cold. Cover a thick cloth over the cap and loosen it 
slowly to reduce pressure, then open the cap. 
  6.  Close the radiator cap firmly and run the engine at 

approx. 2000 rpm. In addition, set the heater temperature 
adjuster to the max position to circulate coolant in the 
heater conduit system. 

  7.  Confirm that the temperature gauge reads half or more 

of full scale and that the thermostat is activated. 
Then continue idling 5 minutes more and switch off the 
engine, and allow it to cool. 

  8.  After the engine cools down, check the coolant level and 

refill it if necessary. When the level is lowered extremely, 
check the coolant conduit system and reservoir hose for 
leak. 

  9.  Pour coolant into the reservoir to MAX level. 

 

 

 

 
 

 

 

Refill Coolant 

Important! 

After closing the cooling system, let engine run warm until 

thermostat opens (coolant approx. 92

°C/197.6F) 

 

Inspection 

Coolant level 

Allow engine to cool. If necessary, refill coolant. 

 

Check that cooling system self-bleeds during engine warming-

up phase. 

 

 

 

 

Ignition Timing, Check 

No Adjustment 

 

ENGINE MECHANICAL (C24SE) 6A-65 

ENGINE EXTERNAL PARTS 

Radiator 

 

 

Removal 

  1.  Disconnect battery ground cable. 

  2.  Loosen a drain plug to drain EC. 

  3.  Disconnect radiator inlet hose and outlet hose from the 

engine. 

 

 

   

 

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  4.  Remove fan guide(1), clips(2) on both sides and the 

bottom lock, then remove lower fan guide(3) with fan 
shroud(4). 

  5.  Disconnect the reserve tank hose(6) from radiator. 

 

 

 
 

 

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 6.  Remove bracket(5). 

 

 

 

  7.  Lift up and remove the radiator assembly with hose, 

taking care not to damage the radiator core with a fan 
blade.