Remove/install refrigerant compressor

AR83.55-T-5300BAS

Remove/install refrigerant compressor

06.06.2019

Model

NMB613.455 with engine 446.938

with code HKB (Konvekta ACX 641 SAPTCO air conditioning without roof heater)

with code HO4 (Front air conditioning)

Model

NMB613.455 with engine 446.938

with code HKE (Konvekta ACX 642 air conditioning with roof heater)

with code HO4 (Front air conditioning)

Shown on model 613.455 with code HKB (Konvekta ACX 641 SAPTCO A/C without roof heater)

1

Refrigerant compressor

2

Pressure-side shutoff valve

3

High-pressure connection

4

Low-pressure connection

5

Intake-side shutoff valve

6

Low-pressure connection

7

Intake-side shutoff valve

Shown on model 613.455 with code HKB (Konvekta ACX 641 SAPTCO A/C without roof heater)

1

Refrigerant compressor

8

Drip tray

9

Electrical connector

10

Carrier

 

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

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

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

1

Open liftgate

2

Remove rear bumper

AR88.20-T-2200B

3

Remove V-belt from refrigerant compressor

AR13.21-T-0160BAS

4

Fuel prefilter with water separator - Remove filter element



AP47.20-T-0783BB

5

Remove collecting pan (8)

6

Disconnect electrical connector (9) of magnetic clutch

7

Remove protective cap over pressure-side shutoff valve (2) and protective caps over intake-side shutoff valves (5, 7)

8

Drain air conditioning system

AR83.30-T-1780BAS

9

Screw in pressure-side shutoff valve (2) and intake-side shutoff valves (5, 7) completely

 Screwing in the pressure side shutoff valve (2) and the intake-side shutoff valves (5, 7) prevents moisture from entering the system.

10

Remove screws connecting high-pressure connection (3) to refrigerant compressor (1)



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

 Installation: Use new seals. Coat seals with compressor oil before installation.

 Bolt of high and low pressure connection to refrigerant compressor

*BA83.55-N-1005-01G

 Torque wrench

*001589672100

11

Remove screws connecting low-pressure connection (4, 6) to refrigerant compressor (1)



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

 Installation: Use new seals. Coat seals with compressor oil before installation.

 Bolt of high and low pressure connection to refrigerant compressor

*BA83.55-N-1005-01G

 Torque wrench

*001589672100

12

Remove screws connecting refrigerant compressor (1) to carrier (10)

 Counterhold nuts from below.

 Bolt, refrigerant compressor to carrier

*BA83.55-N-1001-01G

 Torque wrench

*001589672100

13

Remove refrigerant compressor (1)

14

Install in the reverse order

15

Evacuate air conditioning system

AR83.30-T-1762BAS

16

Fill air conditioning system

AR83.30-T-1777BAS

17

Perform function test



Air conditioning system - function check

Model NMB613.455 with engine 446.938
with code HKB (Konvekta ACX 641 SAPTCO air conditioning without roof heater)
with code HO4 (Front air conditioning)

AP83.00-T-8352BAS



Air conditioning system - function check

Model NMB613.455 with engine 446.938
with code HKE (Konvekta ACX 642 air conditioning with roof heater)
with code HO4 (Front air conditioning)

AP83.00-T-8352BAD

 Refrigerant compressor

Number

Designation

ENGINE 446.938 in MODEL 613.455 with CODE HKB

ENGINE 446.938 in MODEL 613.455 with CODE HKE

BA83.55-N-1001-01G

Bolt, refrigerant compressor to carrier

Nm

50

50

 Refrigerant compressor

Number

Designation

ENGINE 446.938 in MODEL 613.455 with CODE HKB

ENGINE 446.938 in MODEL 613.455 with CODE HKE

BA83.55-N-1005-01G

Bolt of high and low pressure connection to refrigerant compressor

M10

Nm

60

60

M12

Nm

90

90