width MERCEDES-BENZ ML320 1997 Complete Owner's Manual

Test values for valve seat rings
Shown at exhaust valve seat ring
946/947/948/
951/960/961,
113.940/941/94
2/943/944
BE05.30-P-
1009-03CInlet
valve/exhaust
valve valve seatWidthmm0.8...1.20.8...1.2
Angle (a)Angle°45(+ 30')45(+ 30')
Correction
Angle (ß)Angle°35 (±15')35 (±15')
Correction
Angle (gamma)Angle°58 (±15')58 (±15')
NumberDesignationEngine 113.960/
961/962/963/
964/965/967/
968/971/980/
981/982/984/
987/988/990/
991/992/993/
995Engine 137.970
BE05.30-P-
1009-03CInlet
valve/exhaust
valve valve seatWidthmm0.60...0.650.75...0.95
Angle (a)Angle°45 (30')45 (30')
Correction
Angle (ß)Angle°35 (±15')35 (±15')
Correction
Angle (gamma)Angle°58 (±15')58 (±15')

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:39 PMPage 112 © 2006 Mitchell Repair Information Company, LLC.

Commercially available tools
Workshop equipment
3Machin valve seat
ring in cylinder head
*WE58.40-Z-
1009-21A
*WE58.40-Z-
1010-21A
Observe tool manufacturer's operating instructions, maintain
dimensions in accordance with checking and machining
dimensions. ?

Checking and machining dime nsions for valve seatsAR05.30-P-
4510-01AV
If the measurements after machining are less than the
specification ?
Replace valve seat ring.AR05.30-P-
3831AV
Inspection
4Measure seat width Correct valve seat width if necessary.AR05.30-P-
4510-01AV
5Insert valve and
inspect for leaks Grind valve with valve grinding compound before
installation.
*WH58.30-Z-
1020-13A
6Measure valve set-
back to cylinder head
If measurement is less than minimum dimension no further
correct valve clearance compensation is possible; replace valve
seat ring or cylinder head ?AR05.30-P-
4100-01AV
Replace valve seat ring. ?
The valve must always be rep laced after installing a new
valve seat ring. AR05.30-P-
3831AV
Install
7Install valves AR05.30-P-
3511AV
NumberDesignation
WH58.30-Z-1020-13AVacuum testing unit
WE58.40-Z-1009-21AValve seat turning device
WE58.40-Z-1010-21AValve seat turning device

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:39 PMPage 114 © 2006 Mitchell Repair Information Company, LLC.

1002-01M
*BA20.10-P-
1003-01C
*BA20.10-P-
1003-01M
*BA20.10-P-
1004-01C
*BA20.10-P-
1004-01M
*BA46.30-P-
1010-01A
*BA46.30-P-
1010-01C
Clean sealing surfaces, appl y sealant only to specified
surfaces in form of bead with height and width of 2.0 mm
± 0.5 mm. The sealant must be applied within 10 minutes!
The silicone bead must not be spread!*BR00.45-Z-
1013-01A
Notes on
application of
sealant to timing
case cover AH01.40-P-
1000-01B
Installation: If sealing compound enters the oil ducts,
this is carried by the oil flow and will clog the oil supply
bores.
Do not damage cylinder head gasket.
Replace seals on ti ming case (19).
Replace front crankshaft radial sealing ring: ?

Engine 112 in model 129
Engine 113 in model 129
Engine 113 in model 163, 202, 208, 210AR03.20-P-
3000B
Engine 112 in models 170, 202, 208, 210, 220
Engine 113 in model 215, 220
Engine 113.981 in model 163.174
Engine 113.963 in models 230.475
Engine 113.992 in model 230.474AR03.20-P-
3000BA
32Install in the
reverse order

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
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 3:17:57 PMPage 105 © 2006 Mitchell Repair Information Company, LLC.

Fig. 318: Identifying Active Service System (ASSYST) Display
ACTIVE SERVICE SYSTEM (ASSYST) INFLUENCING PARAMETERS - GF00.20-P-0003-05A
The values of various influencing parameters are required by ASSYST for calculating the demand-based service
interval, and these are included in the calculation of the service interval as weighting factors . There are two
versions within ASSYST, the difference being in the oil level sensors fitted:
The familiar oil level indicator switch (S43) is fitted to engines (104, 111, 119, 120, 602.982, 604, 605,
606). In view of the fact that this is a switch, it is only possible to detect if the oil level drops below the
minimum level.
The oil sensor (oil level/temperature/quality, B40) is used on more recent engines (e.g. 112, 113, 166,
611, 668). This sensor consists of 2 capacitor systems with the engine oil as an insulator. If the water
content of the oil or the oil level changes, there is a change in the capacitance of the "capacitor".
The capacitance is thus a measure for the oil level.
In addition, the oil sensor (oil level/temperature/quality, B40) contains a temperature sensor which
detects the temperature of the engine oil.
All the signals are processed in the electronics integrated in the sensor to form a PWM (pulse width
modulated) signal, and passed to the engine control module (N3).
In addition to the weighting factors, which depend on reallife driving conditions, quality factors are also used
for calculating the demand-based service interval (remaining distance and remaining time).
Survey of ASSYST influencing parameters
Weighting factors (dependant on reallife driving conditions):
Load torque
Engine speed
Oil level
Engine oil temperature
Oil correction factor (is used as comparative value for determining oil level)
Coolant temperature
These data are supplied by the injection system control module (N3) to the service microprocessor over
the CAN.
The data relating to oil level, engine oil temperature and oil correction factor are supplied by the oil
sensor (oil level/temperature/quality, B40) through the injection system control module (N3), and are
therefore only available on engines fitted with this sensor.
Quality factors (these are factory-set to base values and can be changed with the HHT, if operating
conditions of the vehicle so necessitate; they influence the start distance):

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:47 PMPage 197 © 2006 Mitchell Repair Information Company, LLC.

Warning threshold (in days)
With the HHT it is possible to set a warning threshold of between 5 and 30 days for the remaining time, with a
stepwidth of one day. The basic setting is 30 days.
Display of remaining time
The remaining time is always only displayed in those cases where the following condition is met:
Remaining time (in days) x 40 < remaining distance (in km), and the warning threshold is reached.
The remaining time is displayed in the following cases:
automatically, after 5 s start switch in position 2 or driving, if the warning threshold is reached:
The service symbol and the readout "SERVICE IN ... DAYS" appears for 10 seconds. (On vehicles not
fitted with multifunction display, the current remaining time, the service and the clock symbol appear.)
automatically, after 5 s start switch in position 2 or driving, if the remaining time is exceeded:
The service symbol and the readout "DAYS ... EXCEEDED" appears for 30 s (for 10 s up to mid-July
97). (On vehicles not fitted with multifunction display, the service and the clock symbol appear. The
"remaining time" is displayed with a negative sign (minus sign). The readout flashes in this case.)
After the display reaches the maximum readout of -730 days, the readout remains at this figure! The
readout is displayed with a resolution of 1 day.
As of approx. 06.97 a brief warning signal sounds in addition.
at driver request. The readout is then displayed, as above, for 10 s.
If a speed limit is set at the cruise control, this speed limit is displayed for a short moment before the
ASSYST display.
If certain measured values are not supplied to the ASSYST, e.g. because of failure of a sensor, it switches to
stored substitute values. An appropriate entry is then made in the fault memory of the particular control module.
If the power supply fails, the data are retained. The times without operating voltage (battery disconnected) are
not recorded, however! They can be retroactively included, however, with the HHT.
Active service system
(ASSYST) operating
informationEngine with oil sensor
(e.g. 112, 113, 611)GF00.20-P-0003-01A
Model 210 as of 01.03.97
with engines 111, 602,
604, 605, 606
Model 129, 140, 170, 202 GF00.20-P-0003-01B

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:47 PMPage 208 © 2006 Mitchell Repair Information Company, LLC.

AR03.10-P-7311BV
Remove/install piston rings
2.7.97

ENGINE
113 in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

ENGINE
112 /945, 113.962 /982

P03.10-2022-06

1
Compression ring (plain compression

ring)

2
Compression ring ( taper-faced hook

scraper ring)

3
Oil scraper ring

4
Piston

5
Piston crown

Fig. item, etc.

Work instructions

4
Remove/install pistons

AR03.10-P-7021AV

1, 2, 3
Piston rings
transmission


Pliers

*000589513700


Removal:

Oil scraper ring
with the pliers.

The oil scraper ring (3)
must be removed and

installed by hand.


Installation:
Compression rings
-
Measure width of compression rings (1, 2).

*BE03.10-P-1003-05B

-
Pay attention to installation position of

compression rings (1, 2). The inscription


"Top" or the manufacturer's designation
must
point toward the piston crown (5).

1, 2
Measure the side clearance of the

compression rings

AR03.10-P-7311-01V

1, 2
Measure end gap of the compression rings

AR03.10-P-7311-02V

Test values for piston rings

Number

Designation
Engine 112.910/

911/912
Engine 112.913
Engine 112.920/

921/922/923/940/
941/942/943/944/
945/946/947/948/

960,

113.940/941/942/

943

BE03.10-P-1003-05B
Dimension
Plain compression ring
mm
83.2 X 1.5 X 3.189.9 X 1.5 X 3.189.9 X 1.5 X 3.1

Taper-faced hook

scraper ring
mm
83.2 X 3.5 X 3.5
89.9 X 1.75 X 3.5
89.9 X 3.5 X 3.5

Test values for piston rings

Number

Designation
Engine 112.949

Copyright DaimlerChrysler AG 20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
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