Remove/install expansion valve

AR83.30-S-5520P

Remove/install expansion valve

12.02.2019

Model

470, 471

Modification notes

31.01.2019

Methods for vehicle with engine 642, reworked.

Shown on model 470 with engine 699

1

Refrigerant line

3

Expansion valve

5

Screw

2

Refrigerant line

4

Bracket

Topical note

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

AH83.30-N-0005-01A

 

Remove/install

1

Remove refrigerant line (1).

Model 470, 471 with engine 642

AR83.30-S-7834PS

Model 470 with engine 200

AR83.30-S-7834PB

Model 470, 471 with engine 699

AR83.30-S-7834PD

2

Remove refrigerant line (2) from expansion valve (3).

Model 470, 471 with engine 642

AR83.30-S-7833PS

Model 470 with engine 200

AR83.30-S-7833PB

Model 470, 471 with engine 699

AR83.30-S-7833PD

3

Unclip refrigerant line (2) from holder (4).

Model 470, 471 with engine 699

 Long wedge

*115589035900

4

Remove bolts (5).

 Screw, expansion valve to evaporator connecting point

*BA83.30-N-1008-01P

5

Screw a screw M6x35 several turns into threaded hole at expansion valve (3).

 Screw M6x35 serves as a pull-off aid for removal of the expansion valve (3).

6

Remove expansion valve (3) by pulling on screw M6x35.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace O-rings on refrigerant lines of evaporator using  assembly tool and moisten with compressor oil.

 Assembly tool

*000589936300

7

Seal connections on expansion valve (3) and refrigerant lines of evaporator immediately with suitable stop plugs.

 Record plug

*129589009100

8

Remove screw M6x35 from expansion valve (3).

When replacing the expansion valve (3).

9

Install in the reverse order

 Air conditioning

Number

Designation

Model 470, 471 with engine 642

Model 470 with engine 200.7

BA83.30-N-1008-01P

Screw, expansion valve to evaporator connecting point

Nm

2,5

2,5

 Air conditioning

Number

Designation

Model 470, 471 with engine 699

BA83.30-N-1008-01P

Screw, expansion valve to evaporator connecting point

Nm

2,5