Mercedes-Benz ML320. Service manual - part 439

 

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Mercedes-Benz ML320. Service manual - part 439

 

 

Compression pressure 

least 8 revolutions.

10

Carry out test procedure 
at the remaining cylinders 
in the same way

 

 

11

Compare measurements 
obtained with the 
specified pressures

 

*BE01.00-P-1001-01D 
*BE01.00-P-1002-01D 
*BE01.00-P-1003-01D

If necessary, if the 
pressure is below the 
minimum compression 
pressure or if permissible 
difference between 
individual cylinders is 
exceeded:?

 

Inspect cylinders for 
leaks

AR01.00-P-1300HV

12

Install in the reverse 
order

 

 

Number

Designation

Engines 112.910/ 
911/912/920/921/923/940/941/ 
942/943/960, 113.940/942/ 
943/961/963 low compression

Engines 112.910/ 
911/920/921/ 
922/923/940/ 
941/942/943/ 
944/945/946/947, 
113.940/941/942/ 
943/960/961/962/ 
963/965/968/969 
normal 
compression

Engine 
113.944 
Standard 
compression

BE01.00-
P-1001-
01D

Compression 
installation 
tolerance or 
new value

bar

10...12

12 to 14

11 to 13

BE01.00-
P-1002-
01D

Compression 
pressure wear 
limit or limit 
value

bar

8.0

9.0

10.0

BE01.00-
P-1003-
01D

Compression 
pressure 
permissible 
difference 
between 
individual 
cylinders

bar

1.5

1.5

1.5

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Complete engine - 163 Chassis

  

me 

 

Compression pressure 

Fig. 19: Identifying Compression Recorder (001 589 76 21 00) 

TESTING COMPRESSION PRESSURE - AR01.00-P-1200V 

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  

Number

Designation

Engines 113.980/ 
981/982/984 Standard 
compression

Engine 
113.992/995

Engine 
113.992/995 
990/991/993

BE01.00-P-
1001-01D

Compression installation 
tolerance or new value

bar 11 to 13

11 to 13

9 to 12

BE01.00-P-
1002-01D

Compression pressure wear 
limit or limit value

bar 10.0

8.0

8.0

BE01.00-P-
1003-01D

Compression pressure 
permissible difference 
between individual cylinders

bar 1.5

1.5

1.5

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Complete engine - 163 Chassis

  

me 

 

Fig. 20: Identifying Compression Recorder Assembly 

 

 

Remove/install

 

 

 

Risk 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

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 

1

Bring engine to 
operating temperature 
(approx. 80°C)

Test compression pressure only 

when engine is at normal 
operating temperature.

 

2

Remove air filter 
housing

All except model 203.065/265, 
170.466: ? 

 Detach the air filter housing 

from the rubber retainers at the 
cylinder head covers vertically 
upward. 

 Models 211, 220, 230.475: 

Unclip engine front end cover. 

 Installation: Rub the retaining 

rubbers on the cylinder head 

 

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Complete engine - 163 Chassis

  

me 

 

covers and sealing ring of the hot 
film air mass sensor in the air 
filter housing with lubricant.
Models 230.474, 203.065/265, 
170.466

AR09.10-P-1150SVK

Lubricant

  
*BR00.45-Z-1002-
06A

3

Remove spark plugs

 Remove only one spark plug 

per cylinder: ?

 

 

Models 
463.209 /232 /233 /244 /245 /250 
with engine 112.945.

AP15.10-P-1580GA

 

Models 
463.206 /240 /241 /247 /248 / 
249 /254 with Engine 113.962.

 

 

Models 463.243 /246 with Engine 
113.982

 

 

Models 211, 220, 230.474/475

AP15.10-P-1580AB

 

Models 210, 208, 203, 202, 170, 
129

AP15.10-P-1580A

4.1

Remove key from 
electronic ignition switch 
(EIS)

Models 211,230.474/475 

 Vehicles with code (889) 

Keyless Go: Press the start/stop 
button repeatedly until the ignition 
is switched off.

 

5

Crank engine with 
starter.

 Do not crank engine at steering 

lock but use contact switch of the 
compression recorder. 

 In order to remove the 

combustion residue from the 
cylinders, crank the engine for 
about 5 seconds with the starter.

 

All except model 203

AR01.10-P-0110V

Model 203

AR01.10-P-0110PV

 

Checking 

 

 

6

Insert compression tester 
into spark plug bore

 Compression recorder

Fig. 21

7

Open throttle valve

Except models 211, 230.474/475

 

8

Crank engine with 
starter.

 Do not crank engine at steering 

lock but use contact switch of the 
compression recorder.

 

All except model 203

AR01.10-P-0110V

Model 203

AR01.10-P-0110PV

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Complete engine - 163 Chassis

  

me 

 

 

 

 

 

 

 

 

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