Remove/install radiator

AR20.20-P-3865MNB

Remove/install radiator

16.10.2019

Engine

178 in model 190

Modification notes

15.10.2019

Special tool added.

Operation step 7.

Shown on model 190.377 up to model year 2016

1

Coolant pipe

3

Coolant hose

2

Radiator

4

Radiator package

 Danger

Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0007-01A

 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

 Warning

Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0006-01A

 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

 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

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

Notes on handling refrigerant R1234yf

Engine 178 in model 190
with code 2U8 (Alternative refrigerant)

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

Engine 178 in model 190
except code 2U8 (Alternative refrigerant)

AH83.30-N-0003-01A

 

Remove/install

1

Open hood.

AR88.40-P-1000RG

2

Drain off coolant.

AR20.00-P-1142MNB

3

Discharge air conditioning system.

AR83.30-P-1760RQ

4

Remove fan unit.

AR20.40-P-5050MNB

5

Remove coolant pipe (1) and place to one side with connected coolant lines.

Engine 178 in model 190
up to model year 2017

6

Remove coolant hoses (3).

AR20.20-P-7441-01RQ

7

Remove refrigerant lines from the condenser and radiator package (4) and seal openings with suitable stop plugs.

AR83.30-P-7816RG



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Install new seals and wet with compressor oil.

 Nut/bolt, refrigerant line to condenser/separating point

*BA83.30-P-1006-01M

 Assembly tool

*000589936300

 Record plug

*129589009100

8

Remove bracket of the servo line from the radiator package (4).

AR46.25-P-3015RG

9.1

Unclip oil cooler from the retaining frame on the radiator package (4) and place to one side with connected oil lines.

Engine 178 in model 190.377/378
up to model year 2017

AR18.30-P-1000MNB

9.2

Remove additional cooler from the retaining frame on the radiator package (4).

Engine 178 in model 190.377/378
as of model year 2017
Engine 178 in model 190.379/380/477/479/480

AR20.20-P-3867MNC

10

Unclip cooler of the power steering from the radiator package (4) and place to one side with connected oil lines.

11

Release and disconnect electrical connector at condenser.

12

Lift radiator package (4) and push toward the rear.

13

Remove both coolant hoses from the low-temperature circuit cooler.

AR20.20-P-7441-01RQ

14

Remove radiator package (4) upward and place on a suitable base.

 Aid of helper required.

15

Unclip cooler (2) from the radiator package (4).

 Installation: Ensure correct seating of the radiator (2) in radiator package (4).



Check

16

Check cooler (2) for damage.

If damage is present,



replace the radiator (2).

17

Install in the reverse order.



Check

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-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

18

Perform engine test run; in doing so, check engine cooling system for leak tightness.

 Air conditioning

Number

Designation

Model 190

BA83.30-P-1006-01M

Nut/bolt, refrigerant line to condenser/separating point

Nm

12