Page 2417 of 4133
Fig. 50: Identifying Hand Pump (112 589 00 72 00)
Fig. 51: Identifying Set Of Stop Plugs (129 589 00 91 00)
Fig. 52: Identifying Pressure Hose (119 589 04 63 00)
Commercially available tools
Workshop equipment
ENSURE GASKET OF CYLINDER HEAD COVER IS CORRECTLY INSTALLED - AR01.20-P-5014-01B
1. Inspect gasket (arrows) of cylinder head cover to ensure it is correctly located in the sealing groove of the
NumberDesignation
WH58.30-Z-1001-06A6 mm socket hexagon on flexible shaft for hose clamps with worm drive
WH58.30-Z-1002-06A7 mm socket hexagon on flexible shaft for hose clamps with worm drive
WE58.40-Z-1012-11ALoad regulator (engine hoist), self-locking
WE58.40-Z-1020-11ARemoval fixture for engine
WE58.40-Z-1036-11ATransmission support
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
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Page 2418 of 4133
cylinder head cover, particularly at the rear of the cylinder head.
Fig. 53: Locating Cylinder Head Cover Gasket
REMOVE/INSTALL CY LINDER HEAD COVER - AR01.20-P-5014B
ENGINE 112
Air filter positioned at vehicle side.
ENGINE 113
Air filter positioned at vehicle side.
Shown on engine 112
Fig. 54: Identifying Cylinder Head Cover Remove/Install Component
- Shown On Engine 112
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
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Page 2419 of 4133

lRemove/install
External torx setFig. 49
Torx bit setFig. 48
1Remove engine trim panel
2Remove air filter housing
(1).
3Remove resonance body (2)
4Remove the resonance tube
(3) with hot film mass air
flow sensor
At this time pull out the
hot film mass air flow
sensor plug.
Removal:
Pay attention to the
mounting projection of the
resonance tube (3)!
All except model 163 with
engine 113.942/981AR07.07-P-1454A
Model 163 with engine
113.942/981AR07.07-P-1454MV
5Unbolt dipstick guide tube
of automatic transmission
6Unbolt ignition coils (6, 7)
at cylinder head covers
AR15.12-P-2003A
*BA01.20
-P-1002-01E
7Disconnect spark plug
connectors
Pay attention to markings
for spark plug connectors
on cylinder head covers
and ignition coils
Fig. 57
8Detach the vacuum hoses at
connections (8, 9) of the
cylinder head covers
9Detach crankcase
ventilation hose at cylinder
head cover fitting (10) Only on left side.
Risk of explosion caused
by ignition of flammable
products, risk of poisoning
caused by inhaling fuel
vapors or swallowing fuel
as well as risk of injury to
skin and eyes exposed to
fuel.No fire, sparks, open
flames or smoking. Pour
fuels only into suitable
and appropriately marked
containers.
Wear protective clothing
when handling fuel.AS47.00-Z-0001-01A
10Disconnect fuel line at fuel Only in case of
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
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Page 2420 of 4133

Crankcase ventilation, cylinder head cover
Fuel rail
railvehicles with a non-
flexible fuel line.
Release fuel pressure
through service valve!
Pressure hoseFig. 52
*BA07.52-P-1001-01A
*BA07.52-P-1001-01A
11Remove cylinder head
covers (4, 5) *BA01.20-P-1001-01E
Installation:
Ensure cylinder head
cover gasket is correctly
installed.AR01.20-P-5014-01B
12Install in the reverse order
13Risk of accident caused by
vehicle starting off by itself
when engine is running.
Risk of injury caused by
contusions and burns during
starting procedure or when
working near the running
engine
Run engine and inspect for
leaksSecure vehicle to prevent
it from moving by itself.
Wear closed and snug-
fitting work clothes.
Do not grasp hot or
rotating parts.AS00.00-Z-0005-01A
NumberDesignation
Engine 112.910/911/
912/913/914/ 915/916/917/
920/921/922/ 923/940/941/
942/943/944/ 945/946/947/
949/951/953/ 954/955/960/
961/970/972/ 973/975/976Engines 113.940/
941/942/943/ 944/948/960/
961/962/963/ 964/965/966/
967/968/969/ 971/980/981/
982/984/986/ 992/995
Engine
113.987/988/
990/991/993
BA01.20-
P-1001-
01EScrew of
cylinder
head cover
Nm8108
BA01.20-
P-1002-
01E
Bolt of
ignition
coils to
cylinder
head cover
Nm888
NumberDesignationEngine 112 except
112.945/951/ 960/961Engine
112.945Engine
112.960/ 976Engine
112.960/ 961
AMG
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
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Page 2421 of 4133
Fuel rail
Fig. 55: Identifying External Torx Set (001 589 76 09 00)
Fig. 56: Identifying Torx Bit Set (000 589 01 10 00)
Fig. 57: Identifying Double Open
-End Wrench (110 589 01 01 00)
BA07.52-P-
1001-01ADisconnect fuel
feed line at fuel railNm38382435
NumberDesignationEngine
113.987Engines
113.990/
991Engine
113.990/
993/995Engines 113.990/ 942/943/944/
945/946/948/ 960/961/962/
963/964/965/ 966/967/968/
969/971/980/ 981/982/984/ 986/988
BA07.52-P-
1001-01ADisconnect fuel
feed line at fuel
rail
Nm38383838
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
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Saturday, October 02, 2010 3:17:56 PMPage 65 © 2006 Mitchell Repair Information Company, LLC.
Page 2422 of 4133
Fig. 58: Identifying Pressure Hose (119 589 04 63 00)
REMOVE/INSTALL CY LINDER HEAD COVER - AR01.20-P-5014BV
ENGINE 112
Air filter motor page arranged
ENGINE 113 (except 113.995) in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230
Air filter motor page arranged
ENGINE 112.945 in MODEL 463.209 /232 /233 /244 /245 /250
ENGINE 113.962 in MODEL 463.206 /240 /241 /247 /248 /249 /254
ENGINE 113.982 in MODEL 463.243/246
Shown on engine 112.945
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
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Page 2423 of 4133

Fig. 59: Identifying Cylinder Head Cover Remove/Install Component - Shown On Engine 112.945
Remove/install
1.1Remove engine trim panel
with integrated air filter
(1) Unclip covering on front side
of engine. Remove air filter by
pulling vertically up and off the
cylinder head covers.
1.2Remove air filterModel 170.466
Model 203.065/265,
Model 211.076/276,
Models 215.374, 220.074/174,
Model 230.474AR09.10-P-1150SVK
2.1Unscrew the guide tube of
the automatic
transmission oil dipstickexcept models 170
Models 203, 209.375,
Model 208
Models 211.061/065/070,
Model 230.475
3Detach right ignition coils
(4), left ignition coils (5)
on right cylinder head
cover (2) and left cylinder
head cover (3)Except engines
112.911/914/915/917/954,
Engine 113.969AR15.12-P-2003A
*BA01.20-P-1002-01E
4Disconnect spark plug
connectors Installation: Observe
marking for spark plug
connectors on the cylinder head
covers and ignition coils.
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
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Page 2424 of 4133

Double open-ended wrenchFig. 57
5Pull off vent hoses on
right connector (6) and on
left connector (7) of the
right cylinder head cover
(2) and left cylinder head
cover (3)
6Pull off engine vent hose
on left connector (8) of
left cylinder head cover
(3)
Risk of explosion caused
by fuel igniting, risk of
poisoning caused by
inhaling and swallowing
fuel as well as risk of
injury to eyes and skin
caused by contact with
fuel.No fire, sparks, open flames or
smoking.
Pour fuels only into suitable and
appropriately marked containers.
Wear protective clothing when
handling fuel, date service.AS47.00-Z-0001-01A
7.1Disconnect fuel line at
fuel rail Only in case of vehicles with
a non-flexible fuel line and.
Models 211.061/065/
070/076/276,
Model 215.374
Model 220.074
Model 230.474/475
Release fuel pr essure through
service valve!
Engine 112*BA07.52-P-1001-01A
Engine 113*BA07.52-P-1001-01A
Pressure hoseFig. 52
8Remove right cylinder
head cover (2) and left
cylinder head cover (3) Installation: Check cylinder
head covers for leaks, see: ?
Ensure cylinder head cover
gasket is correctly installed.AR01.20-P-5014-01B
*BA01.20-P-1001-01E
9Install in the reverse order
10Risk of accident caused
by vehicle starting off by
itself when engine is
running. Risk of injury
caused by contusions and
burns during starting
procedure or when
working near the running Secure vehicle to prevent it from
moving by itself.
Wear closed and snug-fitting
work clothes.
Do not grasp hot or rotating
parts.AS00.00-Z-0005-01A
2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 68 © 2006 Mitchell Repair Information Company, LLC.