Remove/install refrigerant compressor

AR83.55-P-5300GC

Remove/install refrigerant compressor

15.11.11

 

Remove/install

 Danger!

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by 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 drained.

AS83.00-Z-0001-01A



Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A



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

All models with air conditioning

AH83.30-N-0005-01A



Notes on handling R134a refrigerant

All models with R134a refrigerant

AH83.30-N-0003-01A

1

Drain air conditioning (recycle)

 Refill compressor oil evacuated back into refrigerant circuit when charging air conditioning
 Installation: Evacuate, fill air conditioning, check for leakage.

Before filling the air conditioning system:

*BF83.30-P-1001-01B

Replace fluid reservoir

AR83.30-P-6520GC

  Observe the refill oil quantity when replacing the fluid reservoir.

*BF83.55-P-1005-01A

2

Remove poly-V belt

 Only remove the poly-V belt from the refrigerant compressor (A9).

AR13.22-P-1202GF

3

Remove suction and pressure line (2, 5) from refrigerant compressor (A9)

 Plug pressure lines

Installation: Replace sealing rings (3, 7) and moisten with compressor oil when inserting.



*BA83.30-P-1018-01A



*BA83.30-P-1019-01A

4

Separate connector (11)

5

Remove bracket (10) on refrigerant compressor (A9) and on the oil pan

6

Remove refrigerant compressor (A9) from support

 Engine 166

*BA83.55-P-1001-01B

 Engine 668

*BA83.55-P-1001-01D

7

Remove refrigerant compressor (A9)

  Observe refill oil quantity when replacing the refrigerant compressor:

*BF83.55-P-1008-01A

  Observe refrigerant compressor oil capacity.

*BF83.55-P-1001-01A

8

Install in the reverse order

 If the AC compressor has been replaced because of damage caused by an internal fault:

 Replace suction and pressure lines (2, 5) with sealing rings:

Replace expansion valve

AR83.30-P-5520GC

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

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

AS00.00-Z-0005-01A

9

Switch on the air conditioner and allow the engine to idle for roughly 4 minutes.

 Temperature selector wheel at min. (blue)

Blower switch at max.

10

Check air conditioning for proper operation

 Air outlet temperature at center nozzle must not drop below +5 °C, if necessary: 

perform diagnosis according to diagnosis manual

11

Inspect the air conditioning circuit for leaks

AR83.30-P-1209-01GC

Air conditioning system leak detector
gotis://E_83_04.0

Number

Designation

Model
168
up to 28.2.01

Model
168
as of 1.3.01

BA83.30-P-1018-01A

Intake line to refrigerant compressor

Nm

22

22

BA83.30-P-1019-01A

Pressure line to refrigerant compressor

Nm

22

22

Number

Designation

Engine 166.940/
960/990/
995

BA83.55-P-1001-01B

Bolt of refrigerant compressor to support of belt tensioning device

Nm

20

Number

Designation

Engine 668.940/
941/942

BA83.55-P-1001-01D

Bolt of refrigerant compressor to support of belt tensioning device

Nm

20

Number

Designation

Model
168

BF83.30-P-1001-01B

Refrigerant

Filling capacity

g

600

Specifications for Operating Fluids

Sheet

BB00.40-P-0361-00A

Number

Designation

Refrigerant
compressor 6SE12
in model 168

BF83.55-P-1001-01A

Refrigerant compressor filling quantity

Compressor oil

cm3

100

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A

BF83.55-P-1005-01A

Additional oil filling capacity when replacing receiver/drier

Compressor oil

cm3

10

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A

BF83.55-P-1008-01A

Additional oil filling quantity when replacing refrigerant compressor

Compressor oil

cm3

20

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A