Mercedes-Benz ML320. Service manual — part 703

Fig. 165: Identifying A/C Housing Components

Disassembly, assembly

Explosion hazard due to welding or
brazing work on the closed air
conditioning system. Poisoning hazard
from inhaling overheated refrigerant
vapors. Injury hazard from eye or skin
contact with liquid refrigerant.

Never perform welding or brazing work on the
closed air conditioning system or in its vicinity.
Smoking and open fire is prohibited. Wear
protective goggles and protective gloves, only
work in well ventilated rooms. Perform repair
work on air conditioning circuit only if system is
discharged.

AS83.00-
Z-0001-
01A

Action to be taken in the event air
conditioning is damaged or leaks

AH83.30-
N-0004-
01A

Protect air conditioning circuit and
components from moisture during
repair work

All models with air conditioning

AH83.30-
N-0005-
01A

Notes on handling R134a refrigerant

All models with R134a refrigerant

AH83.30-
N-0003-
01A

1 Remove A/C housing

AR83.30-
P-5200GH

2

Remove heat exchanger (1) from heater
housing

AR83.20-
P-3400GH

2001 Mercedes-Benz ML320

1998-2005 HVAC Climate Control - 163 Chassis

me

CORRECTING OIL LEVEL IN AIR CONDITIONING FOLLOWING REPAIR OR SLOW REFRIGERANT LOSS - AR83.30-P-
5251E

MODEL 163 with CODE (580) Air conditioning or Tempmatic for USA

A/C compressor 7SB16

MODEL 202 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air
conditioning (Automatic) A/C compressor ND6CA17, A/C compressor 7SB16

MODEL 208 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air
conditioning (Automatic) A/C compressor 7SB16

MODEL 210 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air
conditioning (Automatic) A/C compressor 7SB16

MODELS 215,220 A/C compressor 7SE16

3

Remove air mixture flap actuator
(M16/8)

AR83.30-
P-2010GH

4

Unscrew screws (2) from upper section
of A/C housing (3)

5

Remove upper section of A/C housing
(3)

Replace gasket between firewall and A/C

housing

6

Remove dust filter (7) from bottom
section of A/C housing (5)

7 Remove evaporator (6)

AR83.30-
P-5540GH

8

Remove evaporator temperature sensor
(B10/4)

AR83.30-
P-8085GH

9 Remove blower motor (M2)

AR83.30-
P-5560GH

10 Reinstall in opposite order

Correct oil level

Carry out work quickly,
compressor oil is
hygroscopic.
When evacuating
refrigerant, the quantity of
compressor oil evacuated
must be added again to
refrigerant circuit when
refilling air conditioning
(new oil)

2001 Mercedes-Benz ML320

1998-2005 HVAC Climate Control - 163 Chassis

me

A/C compressor

A/C compressor

CORRECTING OIL LEVEL IN AIR CONDITIONING AFTER REPLACING PARTS - AR83.30-P-5252E

MODEL 163 with CODE (580) Air conditioning or Tempmatic for USA

A/C compressor 7SB16

MODEL 202 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air
conditioning (Automatic) A/C compressor ND6CA17, A/C compressor 7SB16

MODEL 208 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air

1

If loss of refrigerant is <
400 g (no leakage
detectable) do not add
compressor oil ?

Carry out leak-tightness
test

refer to SI83/85

2

If loss of refrigerant is >
400 g (leakage detectable)
fill with new compressor
oil, also ?

*BF83.55-P-1009-01A

Replace fluid reservoir

Models 202, 208, 210

AR83.30-P-6520E

Model 163

AR83.30-P-6520GH

Models 215, 220

AR83.30-P-6520M

Number

Designation

A/C
compressor
7SB16 in
models 140,
170, 202, 208,
210

A/C
compressor
ND6CA17 in
model 202

A/C
compressor
7SB16
Refrigerant
R134a in
model 163

BF83.55-P-
1009-01A

Additional oil
capacity when
leakage
detected

Compressor oil

cm

3

20

20

20

Specifications
for service
products

Sheet BB00.40-P-

0362-00A

BB00.40-P-
0362-00A

BB00.40-P-
0362-00A

Number

Designation

A/C compressor
7SE16 in model
215

A/C compressor
7SE16 in model
220

BF83.55-P-
1009-01A

Additional oil
capacity when
leakage detected

Compressor oil

cm

3

20

20

Specifications for
service products

Sheet BB00.40-P-

0362-00A

BB00.40-P-
0362-00A

2001 Mercedes-Benz ML320

1998-2005 HVAC Climate Control - 163 Chassis

me

conditioning (Automatic) A/C compressor 7SB16

MODEL 210 with CODE (580) Air conditioning or Tempmatic for USA with CODE (581a) Air
conditioning (Automatic) A/C compressor 7SB16

MODELS 215,220 A/C compressor 7SE16

A/C compressor

Correct oil level

Carry out work quickly, compressor oil is
hygroscopic
When evacuating refrigerant, the quantity of
compressor oil evacuated must be added again
to refrigerant circuit when refilling air
conditioning (new oil)

1

Replace A/C compressor, additionally fill with
new compressor oil

*BF83.55-P-
1008-01A

2

Replace condenser and additionally fill with new
compressor oil

*BF83.55-P-
1003-01A

3

Replace evaporator and additionally fill with
compressor oil

*BF83.55-P-
1004-01A

4

Replace fluid reservoir and additionally fill with
compressor oil

*BF83.55-P-
1005-01A

5

Replace suction pipe from evaporator to A/C
compressor and additionally fill with new
compressor oil

*BF83.55-P-
1006-01A

6

Replace pressure pipe from A/C compressor to
condenser and additionally fill with new
compressor oil

*BF83.55-P-
1007-01A

7

Additional oil quantity when replacing
evaporator, rear air conditioning

Model 220

*BF83.55-P-
1010-01A

8

Additional oil quantity when replacing rear air
conditioning lines

Model 220

*BF83.55-P-
1011-01A

9

Switch on air conditioning and allow engine to
run at idle speed for approx. 4 minutes

Turn temperature thumb wheel of

center nozzles to stop in blue range, or
on automatic air conditioning to "Lo"
Blower at max.

10 Check function of air conditioning

Air output temperature at center

nozzle must not fall below + 5

0

C, if

necessary ? Carry out diagnosis

Number

Designation

A/C
compressor
7SB16 in

A/C
compressor
7SB16

A/C
compressor
ND6CA17 in

2001 Mercedes-Benz ML320

1998-2005 HVAC Climate Control - 163 Chassis

me