Remove/install refrigerant lines at the left side wall

AR83.50-S-6501E

Remove/install refrigerant lines at the left side wall

13.12.2016

Model

447.7/8

with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

Model

448

Modification notes

22.11.2016

Compressor oil changed.

Operation step 7, 10

Shown on MODEL 447.8 except CODE ZK7 (MARCO POLO equipment line)

1

Blower motor filter housing

3

Nut

5

Refrigerant line

2

Nuts

4

Refrigerant line

6

Shutoff valve

4

Refrigerant line

8

Sealing rings

11

Sealing rings

5

Refrigerant line

9

Refrigerant line

7

Screw

10

Refrigerant line

 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

 Danger !

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



Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S



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

AH83.30-N-0005-01A



Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A



Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Drain air conditioning system

Model 447 except code HX1 (R-1234yf refrigerant), model 448

AR83.30-S-1760E

Model 447 with code HX1 (R-1234yf refrigerant)

AR83.30-S-1760EF

2.1

Remove blower motor filter housing (1) in rear

Model 447.7
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
except code ZK7 (Equipment line MARCO POLO)
Model 448

AR83.30-S-5565E

2.2

Remove gas bottle reservoir

Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
with code ZK7 (Equipment line MARCO POLO)

AR86.60-S-0081E

3

Unscrew nuts (2)

 Nut, refrigerant line to refrigerant line at left rear

*BA83.50-N-1004-01J

4

Unscrew nut (3)

 Nut, refrigerant line to expansion valve

*BA83.50-N-1003-01J

5

Raise vehicle

AR00.60-S-1000E

6

Remove screw/bolt (7) at underfloor

 Screw/bolt, refrigerant line to refrigerant line at left rear

*BA83.50-N-1005-01J

7

Remove refrigerant lines (4, 5) from refrigerant lines (9, 10)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings (8) of refrigerant lines (9, 10) and moisten with compressor oil.

8

Seal refrigerant lines (4, 5, 9, 10) using stop plugs

 Record plug

*129589009100

9

Lower vehicle

10

Remove refrigerant lines (4, 5) at shutoff valve (6)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings (11) of refrigerant lines (4, 5) and moisten with compressor oil.

11

Seal connections of shutoff valve (6) and refrigerant lines (4, 5) using stop plugs

 Record plug

*129589009100

12

Install in the reverse order

 Rear air conditioning

Number

Designation

Model 448

Model 447.7/8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

BA83.50-N-1003-01J

Nut, refrigerant line to expansion valve

Nm

12

12

 Rear air conditioning

Number

Designation

Model 448

Model 447.7/8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

BA83.50-N-1004-01J

Nut, refrigerant line to refrigerant line at left rear

Nm

12

12

 Rear air conditioning

Number

Designation

Model 448

Model 447.7/8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

BA83.50-N-1005-01J

Screw/bolt, refrigerant line to refrigerant line at left rear

Nm

12

12