Remove/install expansion valve with coolant line

AR83.30-L-5530A

Remove/install expansion valve with coolant line

12.7.10

 

Remove/install

 Danger!

Risk of explosion from welding or soldering work on closed air conditioning system. Risk of poisoning from inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.

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 areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged.

AS83.00-Z-0001-01A

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury from bruises and burns if you place your hand into the engine when it is started or when it is running.

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not grasp hot or rotating parts.

AS00.00-Z-0005-01A



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

All models fitted with air conditioning

AH83.30-N-0005-01A



Notes on handling refrigerant R134a

All models with R134a refrigerant

AH83.30-N-0003-01A

1

Discharge air conditioning system

AR83.30-L-1780A

2

Remove wiper arms

AR82.30-L-6100A

3

Remove front panel

AR88.80-L-1000A

4

Remove center section of instrument panel

AR68.10-D-1030A

5

Remove top part of instrument panel

AR68.10-D-1020A

6

Remove central electrical system fixture (4)

7

Pull defroster conduit (1) from heater housing

 On left and right.

8

Remove footwell air duct (3)

 On left and right.

9

Detach coupling (5) of temperature sensor

 Mark connector (5).

10

Remove fresh and recirculated air conduit (2)

 On left and right.

 Installation: Ensure that lower area is sealed.

11

Remove evaporator refrigerant lines (8) from threaded pipe connections (6, 7)

 Installation: Replace sealing rings.

 3/4" screw-in pipe connection, evaporator to refrigerant line

*BA83.40-N-1007-01B

 7/8" screw-in pipe connection, evaporator to refrigerant line

*BA83.40-N-1008-01B

12

Unscrew bolts (17) and nuts (9)

 At the retaining brackets (18).

13

Remove hose clamps (10) from refrigerant lines (13)

14

Remove refrigerant lines (13) from threaded pipe connections (14, 16)

 Installation: Replace sealing rings.

 Threaded pipe connection 5/8", fluid reservoir to expansion valve refrigerant line

*BA83.40-N-1009-01B

 Threaded pipe connection 11/16", AC compressor to expansion valve refrigerant line

*BA83.40-N-1010-01B

15

Remove expansion valves (12), refrigerant lines (13) with rubber grommets (11) upwards

Avoid damage.

Replenishing quantity when replacing refrigerant lines with expansion valves

*BF83.30-N-1010-01A

16

Remove fluid reservoir (15)

 The fluid reservoir (15) must be replaced every time you open up the air conditioning.

AR83.30-L-6520A

17

Install in the reverse order



Checking

18

Evacuating air conditioning system, leak test

AR83.30-L-1762A

19.1

Fill air conditioning system, replenish (gaseous)

AR83.30-L-1767A

19.2

Fill air conditioning system (liquid)

AR83.30-L-1777A

20

Check function of air conditioning

 Run engine at idling speed for about 5 minutes and check all the component functions which are of relevance for proper operation of the air conditioning system.

21

Perform quick test on air conditioning system

AR83.30-L-1209A

Number

Designation

Model 667,
668, 670
with code H03

BA83.40-N-1007-01B

Pipe union 3/4", evaporator core to refrigerant line

Nm

45 (5)

BA83.40-N-1008-01B

7/8" screw-in pipe connection, evaporator to refrigerant line

Nm

33 (4)

BA83.40-N-1009-01B

Threaded pipe connection 5/8", fluid reservoir to
expansion valve refrigerant line

Nm

17 (3)

BA83.40-N-1010-01B

Threaded pipe connection 11/16", AC compressor to
expansion valve refrigerant line

Nm

44 (4)

Number

Designation

Model
667, 668, 670 with compressor 10PA17

BF83.30-N-1010-01A

Compressor oil refill quantity when replacing refrigerant lines with expansion valves

cm3

10

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A