ar2000b1030ga

Remove grease and scale in the cooling system

Type ar · emne 20.00 · version 0100 · 2019-02-19

Gælder for: Engine 457.9 in model 934.2, 958.4 Engine 460.9, 541.9, 542.9 in model 934.2, 938.1

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 20 Motorkøling › 20.00 Generelt — Serie 460 (modeller 9**) · Serie 934 (modeller 2**) · Serie 938 (modeller 1**) · Serie 958 (modeller 4**)

EinPAS 15 Motor › 15.25 Motorkølesystem › 15.25.5 kølervæskekredsløb komplet — Serie 460 (modeller 9**) · Serie 934 (modeller 2**) · Serie 938 (modeller 1**) · Serie 958 (modeller 4**)

Gælder også for motorer/gearkasser: 457 9**, 541 9**, 542 9**

AR20.00-B-1030GA

Remove grease and scale in the cooling system

04.02.2019

Engine

457.9 in model 934.2, 958.4

Engine

460.9, 541.9, 542.9 in model 934.2, 938.1

Degrease

Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from 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

Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

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

AS00.00-Z-0005-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

1

Start the engine and let it running up to reach the operating temperature

2

Stop the engine and let it cool during approximately 30 minutes

To ensure that the existing oil can accumulate in the expansion tank.

3

Check for residues of oil in the expansion tank

If there is oil in the tank:

Suck out the oil from the expansion tank.

4

Completely drain the coolant

.

AP20.00-B-2080TA

5

Remove the expansion tank

Only if there is oil in the expansion tank.

6

Wash the expansion tank with a cleaning solution with 3% medium alkalinity detergent and drinkable water

Only if there is oil in the expansion tank.

Solution ratio: 30 ml of cleaning agent for 1 liter of drinkable water. Discard the cleaning solution in an environmentally friendly way.

Cleaner for engine and cooling system for oil drag-in, 10 l

*BR00.45-Z-1009-04A

7

Install the expansion tank

Only if there is oil in the expansion tank.

8

Detach the hoses of supplying and return of the heating system and flush the heating system with drinkable water

If possible, use hot water or warm. Dispose the rinse water in an ecologically correct way.

9

Attach the hoses of supplying and return of the heating system

10

Detach the hoses of the cooling system in the separation points between the engine, the radiator and the retarder

11

Rinse the engine, the radiator and the retarder with drinkable water

If possible, use hot water or warm. Dispose the rinse water in an ecologically correct way.

12

Attach the roses of the cooling system in the separation points between the engine, the radiator and the retarder

13

Fill the engine cooling system with a cleaning solution with 3% medium alkalinity detergent and drinkable water


The cleaning solution must be mixed out of the engine cooling system,
because, the direct application of the cleaning agent can damage the parts of the engine cooling system.


The engine cooling system must be immediately rinsed after the oil removal,
because the residues of the cleaning solution remaining in the engine cooling system can damage the parts of the cooling system.

Solution ratio: 30 ml of cleaning agent for 1 liter of drinkable water.

Cleaner for engine and cooling system for oil drag-in, 10 l

*BR00.45-Z-1009-04A

14

Set the heating system in the maximum heating power

15

Run the engine at medium speed and let it heat up to the coolant reaches approximately 80 °C, then let the engine running during approximately 5 minutes with the coolant in this temperature

Should it be necessary, the radiator front can be covered.

16

Stop the engine and let the coolant cool down to approximately 50 °C

17

Completely drain the cleaning solution of the engine cooling system

Discard the cleaning solution in an environmentally friendly way.

18

Rinse the heating system

Carry out the work steps 8 and 9.

19

Rinse the engine, the radiator and the retarder

Carry out the work steps 10 and 12.

20

Rinse twice the engine cooling system with drinkable water, to that end let the engine running during approximately 5 minutes at each rinsing


If it is not descale, the engine cooling system must be filled with coolant immediately after the last rinsing process,
because, the water in the engine cooling system do motor causes corrosion.

Completely drain the water after each rinsing procedure and discard it in an ecologically correct way.

21

Check the rinsing water for dirties

If the rinsing water has residues oil yet after the 2º rinsing procedure:

Repeat the process of oil removal.

22

Check the PH value of the rinsing water

If it has not been carried out no descaling in the engine cooling system.

The test values can be obtained by means of the GLC.

If the PH index of the rinsing water is not neutral after the last rinsing:

Carry out the rinsing process again.

Descaling

23

Fill the cooling system with a cleaning solution with 10% citric acid, tartaric or oxalic acid and water


The cleaning solution must be mixed out of the engine cooling system,
because, the direct application of the cleaning agent can damage the parts of the engine cooling system.


The engine cooling system must be immediately rinsed after the descaling process,
because the residues of the cleaning solution remaining in the engine cooling system can damage the parts of the cooling system.

Before descaling, the engine cooling system must be thoroughly degreased, even if there is no visible oil residue.
Chromic acid or products containing chrome must not be use due to risk of residual water contamination.
Preferably, tartaric acid must be used.
Solution ratio: 100 g of tartaric acid for 1 liter of drinkable water. Chemical products to prepare the cleaning solution are available at chemical product shops. For descaling and deoxidizing, it can also be use commercial products composed with the above mentioned acids.

24

Run the engine and let it heat running in medium speed up to approximately 80 °C, then let the engine running during approximately 10 minutes with the coolant in this temperature

Should it be necessary, the radiator front can be covered.

25

Stop the engine and let it cool down to approximately 50 °C

26

Completely drain the cleaning solution

Discard the cleaning solution in an environmentally friendly way.

27

Rinse at least three times the engine cooling system with drinkable water, to that end let the engine running during approximately 5 minutes at each rinsing


The engine cooling system must be filled up with coolant immediately after the last rinsing,
because, the water in the engine cooling system do motor causes corrosion.

Completely drain the water after each rinsing procedure and discard it in an ecologically correct way.

28

Check the PH value of the rinsing water

The test values can be obtained by means of the GLC.

If the PH index of the rinsing water is not neutral after the last rinsing:

Carry out the rinsing process again.

29

Fill up with coolant

.

AP20.00-B-2080TA

Repair materials

Number

Designation

Order number

BR00.45-Z-1009-04A

Cleaner for engine and cooling system for oil drag-in, 10 l

A 002 986 42 71

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