Remove/install refrigerant compressor

AR83.55-D-5300WE

Remove/install refrigerant compressor

09.02.2018

Model

900 with engine 651

with code HK4 (Rear air conditioning, reinforced)

2nd refrigerant compressor

Model

906.6 with engine 651

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

2nd refrigerant compressor

Model

906.6/7 with engine 272

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

2nd refrigerant compressor

Model

906.6/7 with engine 642

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

2nd refrigerant compressor

Model

906.6/7 with engine 646

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

2nd refrigerant compressor

Model

906.633 up to 4/13/14 with engine 651.955/956

with code HK4 (Rear air conditioning, reinforced)

with code ZL3 (National version for Latin America)

2nd refrigerant compressor

Model

906.655/657 with engine 651.955/956

with code HK4 (Rear air conditioning, reinforced)

with code ZL3 (National version for Latin America)

2nd refrigerant compressor

Shown on engine 651

1

V-belt

2

Screw

3

Refrigerant line

4

Refrigerant line

5

Electrical connector

A9/7

2nd refrigerant compressor

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Warning

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

Topical note

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

AH83.30-N-0005-01A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Turn transmitter key in electronic ignition lock control unit to position "0"

2

Drain air conditioning system

Model 906 with code H08 (Roof air conditioning, reinforced)

AR83.30-D-1760D

Model 900, 906 code HK4 (Rear air conditioning unit, reinforced)

AR83.30-D-1760WE

3

Lift/jack up vehicle

AR00.60-D-1000H

4

Disconnect electrical connector (5) at 2nd refrigerant compressor (A9/7)

5

Remove refrigerant lines (3, 4) from 2nd refrigerant compressor (A9/7)



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

 Installation: Attach refrigerant lines (3, 4) with new sealing rings. Coat sealing rings with compressor oil.

 Bolt, refrigerant line to refrigerant compressor

*BA83.30-N-1010-01F

6

Seal openings of refrigerant lines (3, 4) and 2nd refrigerant compressor (A9/7) using suitable stop plugs

 Record plug

*129589009100

7

Remove V-belt (1) of 2nd refrigerant compressor (A9/7)

Model 900, 906 with engine 651, model 906 with engine 642 or with engine 646

Model 906 with engine 642

AR13.21-D-0160SF

Model 900, 906 with engine 651

AR13.21-D-0160WE

8

Remove screws/bolts (2) and remove 2nd refrigerant compressor (A9/7)

 Model 906 with engine 272
The 2nd refrigerant compressor (A9/7) is removed together with the V-belt (1).

 Model 900, 906Bolt, A/C compressor to carrier

*BA83.30-N-1018-01F

If a new 2nd refrigerant compressor (A9/7) is installed.



Drain compressor oil from the new 2nd refrigerant compressor (A9/7). Determine residual quantity of compressor oil in removed 2nd refrigerant compressor (A9/7). Add new compressor oil to match determined quantity of oil remaining in the new 2nd refrigerant compressor (A9/7).



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

9

Install in the reverse order

 Air conditioning

Number

Designation

Model 900 with code HK4

Model 906.6/7 with code H08

BA83.30-N-1010-01F

Bolt, refrigerant line to refrigerant compressor

Nm

22

22

 Air conditioning

Number

Designation

Model 906 up to 13.04.14 with code HK4+IR4+ZL3 (with condenser module on roof (KONVEKTA)) Model 906 up to 31.12.15 with code HK4+ZL3 except code IR4 (with condenser module on roof (KONVEKTA))

Model 906 as of 14.04.14 up to 31.12.15 with code HK4+IR4+ZL3 (without condenser module on roof (KONVEKTA))

BA83.30-N-1010-01F

Bolt, refrigerant line to refrigerant compressor

Nm

22

22

 Air conditioning

Number

Designation

Model 906 as of 01.01.16 with code HK4+ZL3 except code IR4 (with condenser module on roof (MAHLE))

Model 906 as of 01.01.16 with code HK4+IR4+ZL3 (without condenser module on roof (MAHLE))

BA83.30-N-1010-01F

Bolt, refrigerant line to refrigerant compressor

Nm

22

22

 Air conditioning

Number

Designation

Model 900 with code HK4

Model 906.6/7 with code H08

BA83.30-N-1018-01F

Bolt, A/C compressor to carrier

Nm

20

20

 Air conditioning

Number

Designation

Model 906 up to 13.04.14 with code HK4+IR4+ZL3 (with condenser module on roof (KONVEKTA)) Model 906 up to 31.12.15 with code HK4+ZL3 except code IR4 (with condenser module on roof (KONVEKTA))

Model 906 as of 01.01.16 with code HK4+ZL3 except code IR4 (with condenser module on roof (MAHLE))

BA83.30-N-1018-01F

Bolt, A/C compressor to carrier

Nm

20

20