Remove/install radiator

AR20.20-P-3865MMB

Remove/install radiator

23.9.10

 

Remove/install

 Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A

 Cooler for low-temperature water circuit (5), transmission cooler (4), condenser for the A/C (2) and cooler (7) create a unit and can therefore only be removed together.



Notes on coolant

AH20.00-N-2080-01A

1

Switch off ignition

2

Open engine hood

3

Open cap on coolant expansion reservoir

 Turn cap slowly and release excess pressure, then unscrew cap.

4

Remove fan unit

AR20.40-P-5050MM

5

Discharge air conditioning system and evacuate

AR83.30-P-1760SX

6

Raise vehicle

AR00.60-P-1000SX

7

Remove bottom engine compartment paneling

AR61.20-P-1105SX

8

Drain coolant at radiator (7)

AR20.00-P-1142MM



Notes on coolant

AH20.00-N-2080-01A

9

Detach engine oil cooler on air ducting and secure against falling down outside the working area

Engine 157

10

Unclip air ducting on radiator support (3) and remove downwards

11

Unclip Active-Body-Control cooler (1) on radiator support (3) and fasten on bumper

Vehicles with code (487) Active Body Control (ABC)

12

Detach coolant hose between coolant pump and cooler (7) and set aside

AR09.41-P-1311-01AL

13

Detach coolant hose between cooler for the low-temperature water circuit (5) and charge air cooler circulation pump

Engines 157, 278



*003589033700

14

Detach coolant hose between charge air cooler and cooler for the low-temperature water circuit (5)

Engines 157, 278



*003589033700

15

Detach transmission fluid lines to transmission cooler (4)

 Seal openings using stop plugs.

AR27.10-P-0501-03SX



*129589009100

16

Detach refrigerant lines on A/C condenser (2)

 Seal openings using stop plugs.

AR83.30-P-6540SX



*BA83.30-P-1001-01K



*BA83.30-P-1009-01K



*129589009100

17

Lower vehicle

AR00.60-P-1000SX

18

Remove coolant hose between cooler (7) and coolant thermostat

AR09.41-P-1311-01AL

19

Remove coolant hose between cooler (7) and coolant expansion reservoir on cooler (7)



*003589033700

20

Take out radiator (7) in an upward direction

 Check rubber mount (8) for the cooler package and replace if necessary.

 Installation: Check for correct seating of cooler package in the rubber mounts (8) and the lower cooler holder.

21

Remove bolt (2a) on the cooler (7), unclip condenser for the A/C (2) from radiator support (3) and take off

When replacing the radiator support (3) or condenser for the A/C (2)

22

Push together retaining clamp and remove cooler (7) from the radiator support (3)

When replacing the cooler (7), radiator support (3), transmission cooler (4) or cooler for the low-temperature water circuit (5)

23

Detach retaining strips (6) from radiator support (3)

When replacing the radiator support (3), transmission cooler (4) or cooler for the low-temperature water circuit (5)

24

Unclip transmission cooler (4) from radiator support (3) and remove

Engines 157, 278

When replacing the radiator support (3) or transmission cooler (4)

25

Unclip cooler for low-temperature water circuit (5) from radiator support (3) and remove

Engines 157, 278

When replacing the radiator support (3) or cooler for the low-temperature water circuit (5)

26

Install in the reverse order

27

Check oil level in transmission and correct if necessary

Vehicles without 4MATIC

AR27.00-P-0270W

Vehicles with 4MATIC

AR27.00-P-0270SYZ

 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

28

Perform an engine test run and check cooling system for function and leaktightness

Number

Designation

Model 221

Model 216

BA83.30-P-1001-01K

Nut, low-pressure line to high-pressure line

Nm

8

8

BA83.30-P-1009-01K

Nut, high pressure line to condenser

Nm

8

8