Remove/install expansion valve of roof-mounted air conditioning system

AR83.50-D-8000TSR

Remove/install expansion valve of roof-mounted air conditioning system

07.06.2018

Model

907.6/7

with code H08 (Roof-mounted air conditioning system, reinforced)

Model

907.6/7

with code HH7 (Roof-mounted air conditioning system, basic)

Model

907.6/7

with code HK4 (Rear air conditioning, reinforced)

Shown with code HK4 (Rear A/C, uprated)

1

Expansion valve

2.2

Refrigerant line

5

O-ring

2

Evaporator

3

Threaded plate

6

O-ring

2.1

Refrigerant line

4

Bolts

Shown with code H08 (Uprated roof-mounted air conditioning system)

1

Expansion valve

2.1

Refrigerant line

7

Shutoff valve

2

Evaporator

2.2

Refrigerant line

Topical note

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

AH83.30-N-0005-01A



Remove

1

Remove evaporator (2) from roof-mounted air conditioning system.

Model 907.6/7
with code HH7 (Roof-mounted air conditioning system, basic)
except code H08 (Roof-mounted air conditioning system, reinforced)
except code HK4 (Rear air conditioning, reinforced)

AR83.50-D-8005TSS

Model 907.6/7
with code H08 (Roof-mounted air conditioning system, reinforced)
Model 907.6/7
with code HK4 (Rear air conditioning, reinforced)

AR83.50-D-8005TSR

2

Unscrew bolts (4) and remove threaded plate (3).

3

Detach expansion valve (1) from refrigerant lines (2.1, 2.2).

4

Remove O-rings (5, 6) from refrigerant lines (2.1, 2.2).

 Assembly tool

*000589936300

5

Seal openings with stop plugs.

 Record plug

*129589009100

6

Remove shutoff valve (7) from expansion valve (1).

Model 907.6/7
with code H08 (Roof-mounted air conditioning system, reinforced)
Model 907.6/7
with code HH7 (Roof-mounted air conditioning system, basic)
If installed.

AR83.50-D-8040TSR



Install

7

Mount shutoff valve (7) onto expansion valve (1).

Model 907.6/7
with code H08 (Roof-mounted air conditioning system, reinforced)
Model 907.6/7
with code HH7 (Roof-mounted air conditioning system, basic)
If installed.

AR83.50-D-8040TSR

8

Remove stop plug.

9

Mount new O-rings (5, 6) onto refrigerant lines (2.1, 2.2).

 Assembly tool

*000589936300

10

Coat new O-rings (5, 6) with compressor oil.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

11

Position expansion valve (1) onto refrigerant lines (2.1, 2.2).

12

Position threaded plate (3) and tighten with bolts (4).

 Bolt, expansion valve to evaporator

*BA83.50-N-1009-02TSR

13

Install evaporator (2) of roof-mounted air conditioning system.

Model 907.6/7
with code HH7 (Roof-mounted air conditioning system, basic)
except code H08 (Roof-mounted air conditioning system, reinforced)
except code HK4 (Rear air conditioning, reinforced)

AR83.50-D-8005TSS

Model 907.6/7
with code H08 (Roof-mounted air conditioning system, reinforced)
Model 907.6/7
with code HK4 (Rear air conditioning, reinforced)

AR83.50-D-8005TSR



Check

14

Check function of roof-mounted air conditioning system.

 Roof air conditioning

Number

Designation

Model 907.6/7
with code HH7 (Roof-mounted air conditioning system, basic)

Model 907.6/7
with code H08 (Roof-mounted air conditioning system, reinforced)

BA83.50-N-1009-02TSR

Bolt, expansion valve to evaporator

Nm

6

6

 Roof air conditioning

Number

Designation

Model 907.6/7
with code HK4 (Rear air conditioning, reinforced)

BA83.50-N-1009-02TSR

Bolt, expansion valve to evaporator

Nm

6