1997 MERCEDES-BENZ ML320 engine

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
1Bring engine to
operating temperature
(approx. 80°C)Test compression pressure only
when engine is at normal
operating temperature.
2Remove air filter
housingAll 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
Saturday, October 02, 2010 3:17:56 PMPage 33 © 2006 Mitchell Repair Information Company, LLC.

covers and sealing ring of the hot
film air mass sensor in the air
filter housing with lubricant.
Models 230.474, 203.065/265,
170.466AR09.10-P-1150SVK
Lubricant
*BR00.45
-Z-1002-
06A
3Remove 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, 230.474/475AP15.10-P-1580AB
Models 210, 208, 203, 202, 170,
129AP15.10-P-1580A
4.1Remove 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.

5Crank 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 203AR01.10-P-0110V
Model 203AR01.10-P-0110PV
Checking
6Insert compression tester
into spark plug bore Compression recorderFig. 21
7Open throttle valveExcept models 211, 230.474/475
8Crank engine with
starter. Do not crank engine at steering
lock but use contact switch of the
compression recorder.
All except model 203AR01.10-P-0110V
Model 203AR01.10-P-0110PV

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 34 © 2006 Mitchell Repair Information Company, LLC.

Compression pressure
9Carry out test procedure
at the remaining
cylinders in the same
way
10Compare measurements
obtained with the
specified pressuresCompression installation tolerance
or new value*BE01.00-P-1001-
01D
Compression pressure wear limit
or limit value*BE01.00-P-1002-
01D
Compression pressure permissible
difference betw een individual
cylinders*BE01.00-P-1003-
01D
If the pressure is below the
minimum compression pressure or
if the permissible difference
between individual cylinders is
exceeded: ?
Inspect cylinders for leaksAR01.00-P-1300HV
11Install in the reverse
order
NumberDesignation
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-
01DCompression
installation
tolerance or
new value
bar10...1212 to 1411 to 13
BE01.00-
P-1002-
01DCompression
pressure wear
limit or limit
value
bar8.09.010.0
BE01.00-
P-1003-
01D
Compression
pressure
permissible
difference
between
individual
cylinders
bar1.51.51.5

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 35 © 2006 Mitchell Repair Information Company, LLC.

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

Repair materials
FIRING ORDER - AR01.00-P-1300-03HA
Fig. 22: Identifying Firing Order (Engines 111, 601, 604, 611, 271)
NumberDesignation
Engines 113.980/
981/982/984 standard
compressionEngine
113.987/988/
990/991/993Engine
113.992/995
BE01.00-P-
1001-01DCompression installation
tolerance or new valuebar11 to 139 to 1211 to 13
BE01.00-P-
1002-01DCompression pressure wear
limit or limit valuebar10.08.08.0
BE01.00-P-
1003-01DCompression pressure
permissible difference
between individual cylinders
bar1.51.51.5
NumberDesignationOrder number
BR00.45-Z-1002-06ALubricantA 000 989 01 60

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 36 © 2006 Mitchell Repair Information Company, LLC.

Fig. 23: Identifying Firing Order (Engines 602, 605)
Fig. 24: Identifying Firing Order (Engines 603, 606)

Fig. 25: Identifying Firing Order (Engine 112)

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 37 © 2006 Mitchell Repair Information Company, LLC.

Fig. 26: Identifying Firing Order (Engine 113)
Fig. 27: Identifying Firing Order (Engine 273)

Fig. 28: Identifying Firing Order (Engine 272)

ENGINES 137,275,285

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 38 © 2006 Mitchell Repair Information Company, LLC.

Fig. 29: Identifying Firing Order (Engines 137,275,285)
INSPECT CYLINDERS FO R LEAKS - AR01.00-P-1300HV
ENGINE 112,137,285
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
ENGINE 113 (except 113.995) in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 39 © 2006 Mitchell Repair Information Company, LLC.

Fig. 30: Identifying Components For Inspecting Cylinders For Leaks
Shown on Engine 112
Remove, Install

1Risk of accident from
vehicle starting off by
itself when engine
running. Risk of injury
suffered in the form of
bruises or burns to the
hands when reaching in
while the engine cranks
or runs
Bring engine to operating
temperature (approx. 80 °
C)Secure vehicle to prevent it
from moving off by itself.
Wear closed and close-
fitting work clothes.
Do not grasp hot or rotating
parts.
Check the cylinder for
leaks only when the engine
is at normal operating
temperature.AS00.00-Z-0005-01A

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
2Open cap (2) of
expansion reservoirIn Model 463 with Engine
112, 113, a cap (2) with a
detent is built-in
Turn cap carefully up to the
first pre-detent, relieve the
pressure and then unscrew
the cap (2).
A 1-stage cap is fitted to
Model 163 with Engine
112, 113.
Turn the 1-stage and 2-
stage cap half a revolution
counterclockwise, relieve
the pressure, then unscrew
the 1-stage or 2-stage cover.
3Remove a spark plug
(19) from each cylinder
Model 202, 208, 209, 210
with Engine 112, 113.AP15.10-P-1580A

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 40 © 2006 Mitchell Repair Information Company, LLC.