Remove/install radiator

AR20.20-P-3865MNL

Remove/install radiator

01.07.2019

Engine

176 in model 217, 222

1

Radiator

2

Air duct segment

3

Air duct segments

4

Coolant lines

5

Oil cooler

6

Coolant hose

7

Bracket

8

Fastening bracket

9

Bolts

10

Coolant hose

11

Coolant line

B14

Outside temperature sensor

2

Air duct segment

3

Air duct segments

12

Condenser

Shown on model 217.4

13

Flap

14

Flap

79

Cross strut

80

Bolts

 Danger

Risk of injury when working on air conditioning systems due to R744 refrigerant escaping under pressure. Risk of suffocation from inhaling R744 refrigerant in high concentrations. Health hazard caused by inhalation of R744 refrigerant

Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.Engine 176 in model 217, 222
with code 1U6 (R744 refrigerant)

AS83.00-Z-0008-01A

 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.Engine 176 in model 217, 222
with code 2U8 (Alternative refrigerant)

AS83.00-Z-0007-01A

 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

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 handling refrigerant R744

Engine 176 in model 217, 222
with code 1U6 (R744 refrigerant)

AH83.30-P-0003-03A

Notes on handling refrigerant R1234yf

Engine 176 in model 217, 222
with code 2U8 (Alternative refrigerant)

AH83.30-P-0003-02A

 

Remove/install

1

Drain off coolant in the low-temperature circuit

AR09.41-P-6834MNL

 Only install upper engine cover and lower engine compartment paneling after the performing a leak test.

2

Drain off coolant of engine cooling system

AR20.00-P-1142MNL

3

Drain air conditioning system

AR83.30-P-1760LF

4

Remove fan unit

AR20.40-P-5050MNL

5

Remove additional engine radiator

AR20.20-P-3867MNL

6

Remove hydraulic fluid cooler

Engine 176 in model 217, 222
with code 487 (Active Body Control (ABC))

AR32.50-P-0020LF

7

Unclip bracket of additional engine radiator

8

Remove refrigerant lines from condenser (12) and seal openings with suitable stop plugs

 Bolt/nut, refrigerant line to condenser/gas cooler

*BA83.30-P-1008-01P

 Record plug

*129589009100

9

Remove circulation pump for low-temperature circuit

AR09.41-P-6926MNL

10

Unclip coolant lines (4) from air duct segments (3)

11

Release and disconnect electrical connector of outside temperature sensor (B14)

12

Release and disconnect electrical connector of refrigerant pressure sensor

Engine 176 in model 217, 222
except code 1U6 (R744 refrigerant)

AR83.30-P-5430LF

13

Remove bracket (7)

 M61

*BA00.10-P-1002-04A

14

Remove coolant hose (6) from radiator low-temperature circuit and seal with protective cover

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

15

Remove coolant hose (10) from radiator (1) and seal with protective cover

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

16

Remove coolant line (11) from radiator low-temperature circuit and from oil cooler (5) and seal with protective cover

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

17

Secure radiator package secure against falling down

18

Remove mounting support (8) of radiator package

 Bolt/nut, front mounting console to front axle carrier

*BA33.10-P-1003-01P

19

Remove screws (80) and remove cross strut (79)

Engine 176 in model 217

 M61

*BA00.10-P-1002-04A

20

Fold left flap (13) and right flap (14) of air duct segment (2) inward in direction of radiator package

21

Remove radiator package downwards

 Aid of helper required.

22

Remove air duct segments (3) from radiator package

23

Remove air duct segment (2) from radiator package

24

Unscrew screw/bolts (9)

25

Remove radiator (1)

26

Install in the reverse order

 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

27

Perform an engine test run and check engine for proper operation and leaktightness

28

Install lower engine compartment paneling

AR61.20-P-1105LF

29

Install upper engine cover

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Front axle carrier

Number

Designation

Model 217

MODEL 222 except CODE Z07

BA33.10-P-1003-01P

Bolt/nut, front mounting console to front axle carrier

Nm

20

20

 Front axle carrier

Number

Designation

MODEL 222 with CODE Z07

BA33.10-P-1003-01P

Bolt/nut, front mounting console to front axle carrier

Nm

20

 Air conditioning

Number

Designation

Model 217
except code 1U6 (R744 refrigerant)

Model 217
with code 1U6 (R744 refrigerant)

BA83.30-P-1008-01P

Bolt/nut, refrigerant line to condenser/gas cooler

M6

Nm

12

12

 Air conditioning

Number

Designation

Model 222
except code 1U6 (R744 refrigerant)

Model 222
with code 1U6 (R744 refrigerant)

BA83.30-P-1008-01P

Bolt/nut, refrigerant line to condenser/gas cooler

M6

Nm

12

12