ar2000g1250md

Remove oil from cooling and heating system

Type ar · topic 20.00 · version 0103 · 2019-04-17

Applies to: Engine 933.9, 935.9 in model 800.010 Engine 935.9 in model 800.011/012

Where it sits

Function group 1 Engine › 20 Engine cooling system › 20.00 General — Series 800 (models 010, 011, 012) · Series 933 (models 9**)

EinPAS 15 Engine › 15.25 Engine cooling system › 15.25.5 Coolant circuit, complete — Series 800 (models 010, 011, 012) · Series 933 (models 9**)

EinPAS 39 Heating/ventilation/cooling › 39.15 Climate control › 39.15.1 Basic information — Series 800 (models 010, 011, 012) · Series 933 (models 9**)

Also applies to engines/gearboxes: 935 9**

AR20.00-G-1250MD

Remove oil from cooling and heating system

25.03.2019

Engine

933.9, 935.9 in model 800.010

Engine

935.9 in model 800.011/012

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

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

Remove

1

Start engine and warm up to operating temperature.

See information from body manufacturer.

2

Switch off engine and allow to cool down for approx. 30 min.

So that any oil present settles in the expansion reservoir.

3

Check whether there is oil in expansion reservoir.

If oil is located in expansion reservoir

Extract coolant/oil mixture from expansion reservoir.

Dispose of extracted coolant/oil mixture.

4

Remove expansion reservoir.

See information from body manufacturer.

5

Drain off coolant completely

AR20.00-G-1142MD

Flushing

6

Remove feed and return hoses of heating.

Only if a heating system is installed.

See information from body manufacturer.

7

Flush heating with fresh water.

Only if a heating system is installed.

See information from body manufacturer.
If possible use hot or warm water.
Dispose of flushing water in an environmentally responsible manner.

8

Install feed and return hoses of heating.

Only if a heating system is installed.

See information from body manufacturer.

9

Remove coolant hoses at interfaces between engine and cooler.

See information from body manufacturer.

10

Flush engine cooling circuit with fresh water.

See information from body manufacturer.
Use hot or warm water.
Dispose of flushing water in an environmentally responsible manner.

11

Attach coolant hoses to interfaces between engine and cooler.

See information from body manufacturer.

Remove oil

12

Mix a 3% cleaning solution consisting of a mildly alkaline cleaner and fresh water.


Mix cleaning solution outside of cooling circuit.
Parts of cooling circuit could otherwise be damaged by the direct filling of the cleaner.

Mixing ratio: 30 ml cleaner to 1 l fresh water.

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

*BR00.45-Z-1009-04A

13

Flush expansion reservoir with 3% cleaning solution.

14

Install expansion reservoir.

See information from body manufacturer.

15

Fill cooling circuit with 3% cleaning solution.

16

Set heating to max. heating output.

Only if a heating system is installed.

See information from body manufacturer.

17

Start engine, warm up to 87 °C coolant temperature and maintain at this coolant temperature for approx. 5 min.

18

Switch off engine and allow to cool to approx. 50 °C coolant temperature.

19

Fully drain cleaning solution out of engine cooling system.


Flush the cooling circuit and, if necessary, the heating system at least 2 times with fresh water immediately after de-oiling.
The residual quantities of the cleaning solution can otherwise damage parts of the cooling circuit and possibly the heating system.

Dispose of cleaning solution in an environmentally responsible manner.

20

Flush the engine cooling circuit and, if necessary, the heating system with fresh water at least 2 times.

To flush with fresh water perform the operation steps 6 to 11. The engine should be run for about 5  minutes between the individual flushing processes. After every flushing process of the flushing water completely and dispose of in an environmentally responsible manner.

21

Check flushing water of the last flushing process for oil.

If oil is still present in flushing water,

Perform work from operation step 12.

22

Check acid content of flushing water of last flushing process using a test strip.

The test strips are obtainable in the EPC and display the pH value.

If flushing water of last flushing process is not pH neutral

Repeat operation step 6 to 11 at least once.


Fill cooling circuit with coolant immediately after last flushing process.
Residual quantities of flushing water can otherwise result in corrosion to parts of cooling circuit and possibly the heating system.

23

Fill in coolant.

AR20.00-G-1142MD

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

Referenced documents