Remove and install heat exchanger

AR83.25-P-1100MFA

Remove and install heat exchanger

14.01.2020

Model

118, 177, 247

Shown on model 177.0

1

Heat exchanger

6

Bracket

8

Thrust piece

5

Screw

7

Screw

9

AC housing

Shown on model 177.0

2

Heat shield

3

Coolant hoses

4

Seal

 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

Notes on coolant

Model 118, 177, 247 with engine 260, 282, 608, 654
Model 118, 177, 247.7 with engine 139

AH20.00-N-2080-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

 

Remove/install

1

Remove heat shield (2) for firewall.

Model 118, 177, 247 with engine 654

AR49.10-P-0001MFF

Model 118, 177, 247 with engine 608

AR49.10-P-0001MFE

Model 118, 177, 247 with engine 282

AR49.10-P-0001MFD

Model 118, 177, 247 with engine 260

AR49.10-P-0001MFC

Model 118, 177, 247.7 with engine 139

AR49.10-P-0001MFG

2

Provide a suitable container to collect the coolant.

3

Release and disconnect coolant hoses (3), and seal exposed connections with suitable protective covers.

AR20.20-P-7441-01RQ

 Collect escaping coolant.

 Set of protective caps

*001589009100

4

Remove crossmember under instrument panel.

AR68.10-P-1120MFA

5

Push floor covering in working area to one side.

6

Remove screw (5) and remove bracket (6).

7

Remove screw (7) and remove thrust piece (8).

8

Provide a suitable container to collect the coolant.

9

Remove heat exchanger (1) with piping from air conditioner housing (9).

 Collect escaping coolant.

 Installation: Ensure that seal (4) is seated correctly.

10

Install in the reverse order.

Concluding tasks

11

Bleed engine cooling system, check for leak tightness and correct coolant level.

Model 118, 177, 247.7 with engine 139

AR20.00-P-1010MFG

Model 118, 177, 247 with engine 260, 282

AR20.00-P-1010MFD

Model 118, 177, 247 with engine 608, 654

AR20.00-P-1010MFE

12

Check heating for proper operation.