Mercedes-Benz ML320. 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