Mercedes-Benz ML320. Service manual - part 702

REMOVE AND INSTALL EVAPORATOR HOUSING - AR83.30-P-5200GH 

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

Fig. 163: Identifying Evaporator Housing Components (1 Of 2)

actuator (M16/8) 

 

4

Detach blend air flap actuator (M16/8) 
from AC housing (1)

 

 

5

Install in the reverse order

 

 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

Fig. 164: Identifying Evaporator Housing Components (2 Of 2) 

 

 

Remove/install

 

 

 

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

 

Procedures if air conditioning 
system is damaged or leaking

All models

AH83.30-
N-0004-
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 fitted with air conditioning

AH83.30-
N-0003-
01A

 

Risk of injury to skin and eyes 
suffering scalding from contact 
with hot coolant spray. Risk of 

Do not open cooling system unless 
coolant temperature is below 90°C. Open 
cap slowly and release the pressure. Do 
not pour coolant into beverage bottles. 

AS20.00-Z-
0001-01A 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

poisoning from swallowing 
coolant.

Wear protective gloves, protective 
clothing and eye protection.

1

Drain coolant

Engine 111 in MODEL 163.

AR20.00-P-
1142HG

 

 

Engines 112 /113 in MODEL 163.

AR20.00-
P-1142HA 

 

 

Engine 628.963 in MODEL 163.128.

AR20.00-P-
1142HB

 

 

Engine 612.963 in MODEL 163.113.

AR20.00-P-
1142M

2.1 Detach 
brake line 
from the 
front end of 
the radiator

 

Only required for right-hand steering.

 

3.1 Detach 
ignition 
cable from 
the front end 
of the 
radiator

 

Only required on right-hand drive vehicles 
with ENGINES 111 /112/113.

 

4

Release coolant overflow from 
battery shield

 

 

5

Disconnect upper coolant hose 
from the electric coolant pump

 Detach hose clamp from the upper 

coolant hose.

 

6

Unscrew nuts from expansion 
reservoir at firewall

 

 

7

Remove expansion reservoir from 
the firewall and lay aside

 

 

8

Disconnect coolant delivery/return 
hoses for heat exchanger (17)

 Detach hose clamps from coolant 

delivery/ return hoses for heat exchanger.

 

9

Discharge air conditioning system

 Installation: Evacuate air 

conditioning, refill and check for proper 
operation and leaktightness.

AR83.30-
P-1760GH

10

Unscrew self-locking nut (16) at 
the expansion valve (15)

 Replace self-locking nut.

 

 

 

 

*BA83.30-
P-1003-01B

11

Detach low-pressure refrigerant 
line (13) and high-pressure 
refrigerant line (14) from expansion 
valve (15)

 Installation: Install new sealing rings 

and moisten with compressor oil.

 

12

Remove instrument panel carrier 
(4)

 

AR68.10-
P-1111GH 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

 Air conditioning system 

DISASSEMBLING, ASSEMBLING A/C HOUSING - AR83.30-P-5201GH 

MODEL 163 with CODE (580) Air conditioning or, in USA, Tempmatic A/C  

13

Unclip ETC control module 
(N15/3)

 

 

14

Detach connector from blend air 
flap actuator (M16/8)

 

 

15

Detach connector from recirculated 
air flap actuator motor (M39)

 

 

16

Detach evaporator temperature 
sensor connector (B10/6x1)

 

 

17

Detach blower motor series resistor 
connector (6)

 

 

18

Detach blower motor connector (5)  

 

19.1

Remove air conditioning control 
module (N19)

 Only up to 31.08.01.

AR83.30-
P-6600GH

20

Unclip cable set at evaporator 
housing

 Installation: Ensure correct routing of 

cable set.

 

21

Remove sound deadener (2)

 

 

22

Detach water drain hose from AC 
housing lower side(1)

 

 

23

Remove AC housing (1)

 Unclip evaporator housing from air 

distributor and remove upward.

 

24

Install in the reverse order

 

 

25

Inspect cooling system for leaks

 

AR20.00-
P-1010HA 

Number

Designation

Model Series 163

BA83.30-P-1003-01B

Nut to pipeline on expansion valve

NM 10

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me