Mercedes-Benz ML320. Manual — part 649

Fig. 4: Removing Evaporator Housing Unit
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

A/C MIX FLAP ACTUATOR

Removal & Installation

Remove instrument panel. See INSTRUMENT PANEL . Disconnect air mix flap actuator connector. Remove
3 screws and remove air mix flap actuator. To install reverse removal procedure.

A/C PUSH BUTTON CONTROL MODULE

Removal & Installation

Disconnect negative battery cable. Remove A/C push button control panel. See A/C PUSH BUTTON
CONTROL PANEL . Remove 4 A/C push button control module screws and remove control module from

2001 Mercedes-Benz ML320

2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55

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A/C housing. Disconnect control module connector. To install reverse removal procedure. Recode 5-digit radio
security code. Using HHT, check for DTC and erase, and set clock.

A/C PUSH BUTTON CONTROL PANEL

Removal & Installation

1. Obtain 5-digit radio security code from vehicle owner. Disconnect negative battery cable. Using radio

removal plates, remove radio. Disconnect electrical connectors.

2. Remove instrument panel center section. Remove 4 A/C control panel screws and remove control panel.

Release pull cables and disconnect connectors. To install, reverse removal procedure. Recode radio. See
RECODING RADIO under PROGRAMMING.

BLOWER MOTOR

Removal & Installation

Remove passenger-side instrument panel under cover. Remove blower motor mounting screws from A/C
housing unit. Disconnect blower motor connector and remove blower motor. To install, reverse removal
procedure.

COMPRESSOR

Removal & Installation

1. Discharge A/C system, using approved refrigerant recovery/recycling equipment. Remove accessory

drive belt. Disconnect low pressure refrigerant line from compressor. Discard "O" rings. Plug exposed
openings to protect A/C system from debris and moisture.

2. Disconnect high pressure refrigerant line from compressor. Discard "O" rings. Plug exposed openings to

protect A/C system from debris and moisture. Disconnect electrical connector. Remove compressor
mounting bolts.

3. Raise and support vehicle. Remove compressor from under vehicle without spilling refrigerant oil. To

install, reverse removal procedure. Ensure refrigerant oil quantity in compressor is correct. See
COMPRESSOR REFRIGERANT OIL CHECKING under GENERAL SERVICING. Tighten bolts to
specification. See TORQUE SPECIFICATIONS .

CONDENSER

Removal & Installation

1. Discharge A/C system, using approved refrigerant recovery/recycling equipment. Remove cooling fans.

See COOLING FANS . Disconnect refrigerant line from receiver-drier. See Fig. 5 . Discard "O" rings.

2. Plug exposed openings to protect A/C system from debris and moisture. Remove refrigerant line from

condenser. Remove radiator upper rubber seal. See Fig. 6 . Remove condenser upper mounting screws.
Lift condenser upward and remove.

NOTE:

Each time A/C compressor is removed and installed, receiver-drier must be
replaced.

2001 Mercedes-Benz ML320

2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55

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3. To install, reverse removal procedure. Use NEW "O" rings lubricated with refrigerant oil. If installing a

new or repaired condenser, add 0.68 ounce of NEW refrigerant oil to condenser. Tighten refrigerant line
bolts to specification. See TORQUE SPECIFICATIONS .

2001 Mercedes-Benz ML320

2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55

me

2001 Mercedes-Benz ML320

2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55

me