ap2000a201001a

Correcting anticorrosion/antifreeze concentration

Type ap · topic 20.00 · version 0104 · 2011-12-22

Applies to: ENGINE 457.939 /945 /946 /949 in MODEL NAB372.124 ENGINE 457.939 /945 in MODEL NAB372.317

Where it sits

Function group 1 Engine › 20 Engine cooling system › 20.00 General — Series 372 (models 124, 317)

EinPAS 15 Engine › 15.25 Engine cooling system › 15.25.5 Coolant circuit, complete — Series 372 (models 124, 317)

Also applies to engines/gearboxes: 457 939, 457 945, 457 946, 457 949

AP20.00-A-2010-01A

Correcting anticorrosion/antifreeze concentration

Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant.

Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.

Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

Engine cooling system

Number

Designation

Model
372.124
with engine 457.946/949

Model
372.317/124
with engine 457.939/945

BF20.00-N-1001-01B

Coolant

Total filling capacity

Liters

85 to 95

85 to 95

Anticorrosion/antifreeze agent down to -37 °C

Liters

-

-

Anticorrosion/antifreeze agent down to -45°C

Liters

-

-

Specifications for Operating Fluids

Sheet

BB00.40-P-0325-00A

BB00.40-P-0325-00A

Sheet

–

–

Sheet

–

–

 Correcting anticorrosion/antifreeze concentration

N20.00-0377-04

Calculation table for replenishment quantity of anti-corrosion agent
and antifreeze (C)

A Anti-corrosion agent concentration and antifreeze concentration
(in vol.%)

B Total coolant filling capacity
(in liters)

C Replenishment quantity of anti-corrosion agent and antifreeze (in liters)

 Correcting anticorrosion/antifreeze concentration

N20.00-0376-04

Example

The antifreeze of the coolant should be 20 °C, giving an anti-freeze concentration and anti-freeze concentration (A) of
32 vol.%.

The accepted total coolant fill quantity (B) is 41 liters.

This results in a replenishment quantity of anti-corrosion agent and anti-freeze (C) of 10.85 liters.

1 Determine the antifreeze of the coolant using the antifreeze tester (hydrometer), Duo-Check 7182.

2 Determine the anti-corrosion agent concentration and
anti-freeze concentration (A) by means of the following assignment:

Antifreeze Anti-corrosion agent concentration and anti-freeze concentration (A)

10 °C 20 vol.-%

15°C 26 vol %

18°C 30 vol %

20°C 32 vol %

25°C 37 vol %

27°C 40 vol %

30°C 42 vol %

33°C 45 vol %

37°C 50 vol.-%

3 Enter the anti-corrosion agent concentration and anti-freeze concentration (A) in the calculation table of the replenishment quantity of the anti-corrosion agent and anti-freeze (C).

4 Gather the total coolant filling capacity (B) from the basic data table and enter in the calculation table of the replenishment quantity of the anti-corrosion agent and anti-freeze (C).

5 Calculate the replenishment quantity of anti-corrosion agent and anti-freeze (C).

6 Drain the coolant corresponding to the calculated replenishment quantity of corrosion and antifreeze (C).

7 Fill the cooling system with the calculated replenishment quantity of anti-corrosion agent and anti-freeze (C).

8 Start engine and run for about 1 minute at varying revs

Referenced documents