2007 ISUZU KB P190 Workshop Repair Manual

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Page 3153 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–18

Topping Up the Cooling System
Under normal operating conditions, the cooling system
should not be topped up at the coolant filler cap. The level
can

Page 3154 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–19

a Place a few drops of distilled water (between 21 and 29° C) onto the measuring window, then close the
plastic cover.
b Point the tester toward any

Page 3155 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–20

COOLANT CONCENTRATION
Litres Of Coolant To Be Added
Concentration Reading % Automatic Transmission Manual Transmission
0 4.95 5.15
5 4.46 4.62
10

Page 3156 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–21

Calibrating the Tester
The coolant tester calibration is checked at manufacture. If however, the calibration check detailed in Step 1 of this
method s

Engine Cooling – V6 Engine Page 6B1–21

Calibrating the Tester
The coolant tester calibration is checked at manufacture. If however, the calibration check detailed in Step 1 of this
method shows that the instrument is not reading correctly, then conduct the following recalibration procedure:
1 Remove the sealant covering the adjustment screw on the underneath of the tester.
2 W ith a distilled water sample on the measuring surface, carefully adjust the screw until a zero reading is obtained.
NOTE
DO NOT completely remove the screw.
3 After recalibration, reseal the screw with a small amount of silicone sealant.
Method 2 – Hydrometer
1 The cooling system should be at or close to ambient temperature.
2 Carefully remove the coolant filler cap from the coolant outlet housing and, while holding the rubber
bulb squeezed, insert nozzle of coolant tester
hydrometer, Tool No. AU505 into coolant. Releasing
the rubber bulb will then draw sufficient coolant into
the tester to float hydrometer bulb freely.
3 Hold tester at eye level and read scale on hydrometer bulb at coolant level.
The reading shows the percentage of ethylene glycol antifreeze contained in the engine coolant.
4 The hydrometer reading should show 50% if the coolant concentration is correct.
• If a reading of less than 50% is achieved, the
cooling system requires topping up with either
DEX-COOL® long-life coolant or its equivalent,
known as Extended Life Anti-freeze Coolant
conforming to GM specification 6277M.
• Refer to the Coolant Concentration table
shown for the previous method to determine
how much coolant additive of either type is
required to be added to the cooling system to
bring the coolant to the specified
concentration.

Figure 6B1 – 18
5 Drain sufficient quantity of coolant from cooling system to allow top-up with coolant additive, then add the required amount of the correct additive. Install coolant filler cap to the coolant outlet housing.
6 Start and run the engine until normal operating temperature is reached. This will allow the added coolant to be distributed throughout the engine cooling system.

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ISUZU KB P190 2007

Page 3157 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–22

3.3 Draining and Filling Cooling System
Draining

Refer to 3.1 Service Notes in this Section, for
important safety items.
1 Allow engine to cool

Page 3158 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–23

1 W ith the engine off, remove the coolant filler cap on
the coolant outlet housing, located at the front left-
hand side of the engine.

Figure 6B1

Page 3159 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–24

12 Open the coolant reservoir tank cap.
13 Top up the radiator coolant recovery reservoir to the MAX line.
14 Reinstall the coolant recovery res

Page 3160 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Cooling – V6 Engine Page 6B1–25

3.4 Cleaning Cooling System
NOTE
• Before carrying out reverse flushing
procedures, it is recommended that a
cleaning solution be used to loose

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