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  
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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  
Saturday, October 02, 2010 3:17:56 PMPage 62 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        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  
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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  
me  
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  
me  
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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  
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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.