1997 MERCEDES-BENZ ML320 Complete Repair Manual

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Page 3457 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Air conditioning system
Refrigerant compressor
Fig. 172: Identifying External Torx Set (001 589 76 09 00)
3.1Remove mass air flow sensor on left
behind the charge air cooler On Model 163.113 only

Page 3458 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual INSTALL/REMOVE CONDENSER - AR83.30-P-6540GH
MODELS 163.113 /128 /136 /154 /157 /172 /174 /175 with CODE (580) Air conditioning or Tempmatic for
USA
Illustrated on model 163.154
Fig. 173: Identify

Page 3459 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Notes on handling refrigerant
R134aAll models fitted with air conditioning
AH83.30-
N-0003-
01A
1.1
Remove
additional
fan (M4)

Models 163.136 /154/157 /172 with air
conditioning or for USA Tem

Page 3460 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Air conditioning system
Refrigerant compressor
REMOVE, INSTALL AIR CONDITIONING CONTROL MODULE - AR83.30-P-6600GH
MODELS 163.113/136/154/172/174 up to 31.8.01 with CODE (580) air conditioning or

Page 3461 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 174: Identifying Air Conditioning Control Module Components
REMOVE AND INSTALL EVAPORATOR TEMPERATURE SENSOR - AR83.30-P-8085GH
MODEL 163 with CODE (580) Air conditioning or Tempmatic for USA

Page 3462 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual REMOVE/INSTALL OUTSIDE AIR TEMPERATURE SENSOR - AR83.30-P-8086GH
MODELS 163.113 #A up to 289564, 163.154 #A as of 145272 up to 289564, 163.172 #A as of 145272,
163.174 #A up to 289564, 163.113 #X up

Page 3463 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 176: Identifying Coolan t Compensating Reservoir
Fig. 177: Identifying Outside Air Te mperature Sensor And Connector

2001 Mercedes-Benz ML320
1998-2005 HVAC Climate Control - 163 Chassis

Page 3464 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
Remove/install

Risk of injury to skin and eyes
suffering scalding from contact with
hot coolant spray. Risk of poisoning
from swallowing coolant.
Do not open cooling system unless coolant
t

Remove/install

Risk of injury to skin and eyes
suffering scalding from contact with
hot coolant spray. Risk of poisoning
from swallowing coolant.
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.
Wear protective gloves, protective clothing
and eye protection.
AS20.00-Z-
0001-01A

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 leakingAll 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 R134aAll models fitted with air conditioning
AH83.30-
N-0003-
01A
1Drain coolant J Engine 112, 113.AR20.00-P-
1142HA
Engine 111.AR20.00-P-
1142HG
Engine 612.963.AR20.00-P-
1142M
2Unscrew coolant compensating
reservoir (1) on firewall Lay compensating reservoir to one side.
3Disconnect coolant delivery/return
hoses for heat exchanger (2) Remove hose clamps from coolant hoses.
4Discharge air conditioning system
Installation: Evacuate air conditioning,
refill and check for proper operation and
leaktightness.AR83.30-P-
1760GH
5Remove cover on expansion valve
(4)
6Remove nut (3) on expansion valve
(4) Replace self-locking nut.
*BA83.30-
P-1003-01B
7Disconnect refrigerant lines from
expansion valve Installation: Install new sealing rings
and moisten with compressor oil.

2001 Mercedes-Benz ML320
1998-2005 HVAC Climate Control - 163 Chassis
me
Saturday, October 02, 2010 3:23:19 PMPage 220 © 2006 Mitchell Repair Information Company, LLC.

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