Mercedes-Benz ML320. Service manual - part 700

 

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Mercedes-Benz ML320. Service manual - part 700

 

 

Commercially available tools 

Workshop equipment 

DRAINING, EVACUATING AND REFILLING AIR CONDITIONING, CHECKING FUNCTION AND CHECKING FOR 
LEAKS - AR83.30-P-1760GH 

MODELS 163.113 /128 /136 /154 /157 /172 /174 /175 with CODE (580) Air conditioning or Tempmatic for 
USA
  

Replace refrigerant compressor RPM sensor

 

 

Models 901-904 

 Not in model 163

AR83.55-D-
5320A

7

Set blower rotary 
switch to maximum 
blower setting

 

 

8

Check that refrigerant 
flows free of bubbles

 If the system is filled sufficiently, the refrigerant must flow 

through the inspection glass (2) free of bubbles. A newly-
filled system may initially reveal bubbles. In this case, wait 
for approx. 10 min. and check inspection glass again. 
Does not reveal bubble-free flow ?

 

 

 

Check entire air conditioning circuit for leaks using leak 
detector (3).

AR83.30-D-
1209-01A

 

 

 Air conditioning system leak detector

*WE58.40-Z-
1002-20A

9

Determine air outlet 
temperature

  

 Switch blower rotary switch to stage "1". 

Insert sensor of temperature measurement device (1) into the 
air outlet of the center nozzles. 
After running for a period of 5 min., the air outlet temperature 
must not be less than 2°C and more than 12°C. After 5 min., at 
the latest, the refrigerant compressor must also be connected 
and disconnected. 
If the refrigerant compressor is disconnected at below 2°C ? 
Check evaporator temperature switch. If the air outlet 
temperature is not achieved ? 
Check the connection and disconnection of the refrigerant 
compressor or the refrigerant pressure upstream and 
downstream of the refrigerant compressor.

*WH58.30-Z-
1005-08A

10

Switch air conditioning 
off and shut vehicle 
engine off

 

 

Number

Designation

WH58.30-Z-1005-08A

Temperature measuring device

WE58.40-Z-1002-20A

Air conditioning leak detector

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

Fig. 157: Checking Draining, Evacuating And Refilling Air Conditioning Function 

 

Draining

 

 

 

Risk of explosion from welding or 
soldering work on closed air conditioning 
system. Risk of poisoning . Inhaling 
overheated refrigerant vapors may be 
toxic. Risk of injury from skin and eye 
contact with liquid refrigerant.

Do not carry out any welding work on the 
closed air conditioning system or in the 
surrounding area. No smoking or open flames. 
Wear eye protection 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

1

Connect the connector (blue) (3) of the 
filling unit (1) to the Schrader valve of 
the high-pressure line and the connector 
(red) (2) to the Schrader valve of the 
suction line.

 During all steps, the operating instructions 

for the particular filling unit must be 
followed.

 

 

 

 

*WE58.40-
Z-1002-22A

2 Discharge air conditioning system

 

 

3

Drain separated oil for refrigerant 
compressor out of the inspection glass for 
the filling unit and determine the quantity 
exactly

Drained quantity must be replaced by fresh 

oil for refrigerant compressor.

 

 

Evacuate 

 

 

Clean air conditioning system and 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

 Air conditioning system 

Workshop equipment 

REMOVE/INSTALL DEFROSTER VENT FLAP ACTUATOR MOTOR FOR WINDSHIELD - AR83.30-P-2006GH 

MODEL 163.113 /154 /174 #A as of 289565, 163.113 #X as of 754620, 163.128/157/175  

4 evacuate

 

 

 

Filling 

 

 

5

Supplement oil for refrigerant 
compressor

 The exact quantity determined when 

drained must be used.

 

6 Fill air conditioning system

 

*BF83.30-P-
1001-01B

 Testing 

 

 

7

Inspect air conditioning system for leaks 
with leak detector

 

*WE58.40-
Z-1002-20A

 

8

Risk of accident. Accidents may result if 
the vehicle starts off unintentionally with 
the engine running. Risk of injury from 
bruises and burns if you hold your hand 
near engine when it is started or when it 
is running. Check function of air 
conditioning

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

 Run engine at idle speed for about 4 

minutes and check all the component 
functions which are of relevance for proper 
operation of the air conditioning system.

AS00.00-Z-
0005-01A
 

Number

Designation

Model Series 163

BF83.30-P-1001-01B Refrigerants

Filling quantity

g 750

Specifications for Operating Fluids

Sheet

BB00.40-P-0361-00A

WE58.40-Z-1002-20A

Air conditioning leak detector

WE58.40-Z-1002-22A

Air conditioning service station

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

Fig. 158: Identifying Components Of Defroster Vent Flap Actuator Motor For Windshield 

REMOVE/INSTALL FOOTWELL FLAP ACTUATOR MOTOR - AR83.30-P-2007GH

 

 

Remove/install

 

 

1

Remove cover below instrument 
panel (left)

 

AR68.10-P-
1500GH
 

2.1

Remove electronic transmission 
control (ETC) control module

 Only on models fitted with automatic 

transmission.

AR27.19-P-
1719GH
 

3

Disconnect interior and taillamp 
wiring harness connector, cockpit
(X18)from bracket(1)

 

 

4

Remove screws (2)

 

 

5

Move bracket (1) downwards and 
put to one side

 

 

6

Disconnect plug (3)

 

 

7

Remove screws (4) on defroster vent 
flap actuator motor (M2/8) from 
heater housing

 

 

8

Remove defroster vent flap actuator 
motor (M2/8)

 Installation: Adjust defroster vent flap 

actuator motor (M2/8) to the 0 position 
using STAR DIAGNOSIS.

 

9

Install in the reverse order

 

 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

 

 

 

 

 

 

 

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