Drain/pour in coolant

AR20.00-P-1142OID

Drain/pour in coolant

23.07.2019

Engine

656 in model 167

Modification notes

16.07.2019

Document revised

Operation steps 1 to 10.

Shown on model 167 with code 490 (electrohydraulic suspension)

2

Drain fitting

3

Drain valve

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 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

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

Drain off

1

Remove cap from expansion reservoir.

2

Remove center and all front bottom engine compartment linings.

AR61.20-P-1105ME

3

Remove automatic transmission oil cooler fan unit and place to one side with connected lines.

Engine 656 in model 167 with transmission 725.0

AR27.55-P-1000OID

4

Slide suitable drain hose onto drain fitting (2).

5

Open drain valve (3), drain coolant, and capture in a suitable container.

 Only open drain valve to extent that coolant can drain out.

6

Close drain valve (3) and detach drain hose from drain fitting (2).

Pour in

7

Attach automatic transmission oil cooler to fan unit.

Engine 656 in model 167 with transmission 725.0

AR27.55-P-1000OID

8

Pour in coolant and bleed engine cooling system.

AR20.00-P-1142-04OLC

Test pressure for pressure-testing the engine cooling system

*BE20.30-P-1005-01A

 Pressure pump

*124589242100

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100

9

Check engine cooling system for leak tightness.

AR20.00-P-1010OID

10

Install center and all front bottom engine compartment linings.

AR61.20-P-1105ME

Radiator or expansion reservoir cap

Number

Designation

1-stage cover latch

Engine 100, 102, 103, 104, 110, 111, 112, 113, 114, 115, 116, 117, 119, 120, 121, 123, 127, 129, 130, 133, 137, 139, 152, 155, 156, 157, 159, 166, 180, 256, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282, 285
2-stage latch cover
Engine 601, 602, 603, 604, 605, 606, 607, 608, 611, 612, 613, 615, 616, 617, 621, 626, 628, 629, 640, 642, 646, 648, 651, 654, 656, 668
2-stage latch cover

BE20.30-P-1005-01A

Test pressure for pressure-testing the engine cooling system

Overpressure

bar

1,4

1,4