1997 MERCEDES-BENZ ML320 Complete Repair Manual

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Page 3185 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
AD54.30-P-2000-02GC
Notes on HHT previous knowledge diagnosis
IC

HHT :

The instrument cluster and active service system (ASSYST) sub-

function are checked with HHT, there being the choice of t

Page 3186 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
AP82.10-P-8260GH
Check and correct headlamp adjustment
2.7.97

MODEL
163

a=Marking for low beams

b=Marking for high beams

c=Marking for fog lamps

P82.10-0212-02

Check

1
Drive vehicle to lev

Page 3187 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
WH58.30-Z-1002-09A
Headlamp adjuster
Robert Bosch GmbH

Franz Oechsle Str. 4

D-73207 Plochingen,

Germany

Copyright DaimlerChrysler AG 20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not

Page 3188 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
AD54.30-P-6000-02GH
HHT interface test electrics IC

t
A

Scope of test

Measuring instrument/

Test connection

Operation/

Requirement
Specified value
D
Possible cause/

Remedy

1.0
HHT interf

Page 3189 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
AF18.00-P-8045A
High oil consumption, blue smoke
26.10.99

ENGINE
112 in MODEL 129, 163, 202, 208, 210

ENGINE
112 in MODEL 463

Modification notes

18.11.99

Supersedes STIP 18.40-004 dated 5.11

Page 3190 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
AF18.00-P-8044D
High oil consumption
12.3.01

ENGINE
112 in MODEL 129, 163, 170, 202, 203, 208, 210, 220

ENGINE
113 in MODEL 129, 163, 202, 208, 210, 215, 220

ENGINE
112, 113 in MODEL 463

Da

AF18.00-P-8044D
High oil consumption
12.3.01

ENGINE
112 in MODEL 129, 163, 170, 202, 203, 208, 210, 220

ENGINE
113 in MODEL 129, 163, 202, 208, 210, 215, 220

ENGINE
112, 113 in MODEL 463

Damage code
Cause
Remedy

Studies on engines 112/113 due to

excessive engine oil consumption have
indicated to date that excessive engine oil

consumption is not a general subject, but

rather can result from various causes.

The causes listed below may cause

excessive engine oil consumption individually

or in combination.

For commercially available tools for see

Workshop Equipment Manual

Cause 1:
Remedy 1:

00 001 70
Cast iron crust in right cylinder head behind

oil drain opening
1
Remove cast iron crust

AF18.00-P-8045A

Cause 2:
Remedy 2:

00 001 70
V-shaped material flaws (rough unhoned

points) on individual cylinder liners

Up to production 08/2000.
1

Check cylinder liners with piston at

bottom dead center.

#

Inspect cylinders with light probe

AR01.00-P-0200AU

*WH58.30-Z-1009-05A

*WH58.30-Z-1010-05A

*WH58.30-Z-1027-05A

Cylinder barrels not okay:
#
2
Remove/install/replace engine or

shortblock.

Cause 3:
Remedy 3:

00 001 70
Single oil scraper rings with ring tension at

lower tolerance limit.

Up to production 06/1999.
1

Perform oil consumption test drive over

approx. 500 km.

AR18.00-P-0025AV
Exclude all other types of faults.

2
Remove/install/replace piston rings.

Install cleaned pistons with new piston

rings in the same cylinder.

Install piston rings with optimized ring

tension.

These piston rings are available as

replacement parts under the normal

replacement part number.

Cause 4:
Remedy 4:

00 001 70
Individual (right) cylinder heads with inner

porous points to air injection duct.
1
Check left/right cylinder bank.

If a cylinder bank is oily:
#
2
Remove/install/replace only this cylinder

head.

ENGINE
112 in MODEL 220, 210, 208, 202,

129

ENGINE
113 in MODEL 220, 210, 208, 202,

129
AR01.30-P-5800B

ENGINE

112.942 in MODEL 163.154

ENGINE
113.942 in MODEL 163.172

ENGINE
113.981 in MODEL 163.174 AR01.30-P-5800MV

ENGINE

112.945, 113.962 in MODEL 463

AR01.30-P-5800GV

Cause 5:
Remedy 5:

00 001 70
Individual engines with missing valve seals on

individual cylinders
1
Remove valve springs on affected

cylinder.

AR05.30-P-3500B

In this case, usually one cylinder is oily, oil

runs through valve cone into cylinder when

valve is open.

2
Check valve seal.

Copyright DaimlerChrysler AG 20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
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Page 1

Page 3191 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
Valve seal not okay :
#
3
Remove/install/replace valve seal.

AR05.30-P-3500B

Cause 6:
Remedy 6:

00 001 70
1.5 mm hole missing on individual right

cylinder head covers at connection to

crankc

Valve seal not okay :
#
3
Remove/install/replace valve seal.

AR05.30-P-3500B

Cause 6:
Remedy 6:

00 001 70
1.5 mm hole missing on individual right

cylinder head covers at connection to

crankcase ventilation.
1
Check cylinder head cover

Up to production 06/1999.

Crankcase ventilation out of order, engine can

sludge up and consume oil as a result

Cylinder head cover not okay:
#
2
Remove/install/replace cylinder head

cover.

ENGINE
112

Air cleaner positioned on engine

side.

ENGINE
113

Air cleaner positioned on engine

side.
AR01.20-P-5014BV

ENGINE

112

Air cleaner positioned on engine side

ENGINE
113

Air cleaner positioned on engine side

AR01.20-P-5014B

Cause 7:
Remedy 7:

00 001 70
Engine oil sludging due to excessively long

engine oil change intervals
Service information: Oil sludge

SI18.00-P-0010A

If the service interval according to

ASSYST is exceeded, the engine oil sludges

up sooner or later depending on the oil

quality, type of operation and operating time.

Engine consumes oil.

See Service Information.

1
Print out ASSYST printout.

2
Check oil change intervals

3
Inform vehicle owner.

4
Remove/install/replace piston rings.

AR03.10-P-7311BV

Disassemble and clean sludged engines

completely because dirty oil usually gets into

clean-oil side due to clogged oil filter.

Cause 8:
Remedy 8:

00 001 70
Piston rings sticky or have coke deposits from

engine oils (e.g. API-S in USA) in connection

with regionally poor fuel quality.

Always use engine oils according to

Specifications for Operating Fluids 229.3, do

not add special additives to engine oil and fuel

BB00.40-P-0229-03A

1
Remove/install/replace piston rings.

AR03.10-P-7311BV

Cause 9:
Remedy 9:

00 001 70
Piston ring wear due to excessive

contamination/dust (model 163) through air

intake system.
1
Remove/install/replace gaskets on air

intake line and distribution element of

partial load ventilation.

e.g. due to incorrect assembly after

workshop visit or embrittlement of gaskets
The distribution element with optimized

material will be available as of 11/ 2000 as a

standard feature.

2
Remove/install/replace intake module.

Exterior oil loss, e.g. due to cast iron

porosity on left side of crankcase in area of

engine support is not considered to be oil

consumption

In the event of a customer complaint

regarding the engine oil consumption, always

determine the oil consumption definitely

because the oil indicator lamp can come on

due to other causes (e.g. defective oil sensor).

Commercially available tools
(see Workshop Equipment Manual)

Number

Designation
Make (e. g.)
Order number

WH58.30-Z-1009-05A
Flexible inspection light
Scope of supply 1 (complete unit):

-glass fiber optical fiber

-light projector

-230 V, storage case

-operating instructions

-graphics protocol
Richard Wolf GmbH

Pforzheimerstr. 32

D-75438 Knittlingen

Karl Storz GmbH

Mittelstr. 8

D-78532 Tuttlingen
1.00565.00

80902

WH58.30-Z-1010-05A
Flexible inspection light

Scope of delivery 2 (for workshops which already have an approved

Wolf or Storz inspection light):

-storage case

-operating instructions

-pictures protocol
Richard Wolf GmbH

Pforzheimerstr. 32

D-75438 Knittlingen

Karl Storz GmbH

Mittelstr. 8

D-78532 Tuttlingen
7.05065.00

K03506AJ

Copyright DaimlerChrysler AG 20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
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Page 2

Page 3192 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual
WH58.30-Z-1027-05A
Cylinder inspection light

Motoskop MB (cold light) with 560 mm and 200 mm lens probes

Karl Storz GmbH

D-78512 Tuttlingen

80 900

Parts ordering notes
Part no.

Designation
Qua

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