Mercedes-Benz ML320. Manual — part 432

Fig. 2: Identifying Visible Mottling And Friction Marks On Cylinder Walls

Ring shaped imprints

Visible imprints on cylinder barrel in the upper and lower reverse area of piston rings are not a cause for
complaint.

The crankcase can be reused.

Fig. 3: Identifying Visible Imprints On Cylinder Barrel

Rotary bright, specular, polished upper surfaces of cylinder

Starting from the reverse area of the upper piston ring with measurable, partial cylinder wear.

2001 Mercedes-Benz ML320

1998-2005 ENGINE Complete engine - 163 Chassis

me

The cylinder barrel is unusable.

Fig. 4: Identifying Cylinder Wear

Roughened mottling, friction scoring

Starting from first and second piston ring, tapering to an end only in bottom part of cylinder. Progressive signs
of friction lead to friction score marks.

Where these signs of friction are perceptible, the cylinder barrel is unusable.

The piston rings may be damaged.

Fig. 5: Identifying Friction Score Marks

2001 Mercedes-Benz ML320

1998-2005 ENGINE Complete engine - 163 Chassis

me

Continuous individual traces of scratch

Caused by dirt, for example, through back pulsation of soot particles from the exhaust.

The crankcase can be reused.

Piston seizure

Most of cylinder wall perceptibly roughened over the entire length.

Material deposits and perceptible scoring marks on cylinder wall and at piston skirt.

The cylinder barrel is unusable.

Brown coloring of cylinder upper surface.

A brown coloration over large areas of the cylinder barrel is oil varnish and indicates that the engine has been
driven at a high temperature level.

The crankcase can be reused if no impermissible cylinder warping is visible

Oil varnish above piston ring zone is normal and is not a reason for complaint.

GENERAL NOTES: PASSENGER CARS: COMPLETE ENGINE, CRANKCASE VENTILATION, CYLINDER HEAD,
CRANKCASE - AH01.00-Z-9999AZ

MODEL all

Notes on application of
sealant to front cover of
cylinder head

ENGINE 629

AH01.30-P-
1000-02TJ

Notes on sealant path for
oil pan

ENGINE 642.970 in MODEL 463.303 /340 /341

AH01.45-P-
0001-01GY

Notes on application of
sealant to oil pan

ENGINE 629

AH01.45-P-
0001-01TJ

General information on
inspecting cylinder walls

ENGINE 272, 273

AH01.00-P-
0300-01VA

Notes on the application of
sealant to the cylinder head
cover

ENGINE 122.9 in MODEL 454.0

AH01.30-P-
1000-08FB

Notes on application of
sealant to oil pan

ENGINE 113, 156...

AH01.45-P-
0001-01GZ

Notes on the application of
sealing compound to the
cylinder head cover

ENGINE 273

AH01.30-P-
1000-08SX

AH01.45-P-

2001 Mercedes-Benz ML320

1998-2005 ENGINE Complete engine - 163 Chassis

me

Notes on application of
sealant to oil pan

ENGINE 272 in MODEL 164, 251

0001-
01GZA

General information on
inspecting cylinder walls

ENGINE 266.920 /940 /960 /980 in MODEL 169.0/3,245.2

AH01.00-P-
0300-01AK

General information on
inspecting cylinder walls

ENGINE 640

AH01.00-P-
0300-01AL

Notes on application of
sealant to front cover of the
cylinder head

ENGINE 272, 273

AH01.30-P-
1000-02V

Notes on application of
sealant to oil pan

ENGINE 134.9, 135.9 in MODEL 454.0

AH01.45-P-
0001-01FF

Information on application
of sealant to oil pan

ENGINE 160.921 /922 /923 in MODEL 452.3 /4

AH01.45-P-
0001-01RR

Notes on application of
sealant to oil pan

ENGINE 273

AH01.45-P-
0001-01SX

General information on
inspecting cylinder walls

ENGINE 155

AH01.00-P-
0300-
01SLR

Notes on application of
sealant to oil pan

ENGINE 271

AH01.45-P-
0001-01T

Information on application
of sealant to oil pan

ENGINE 628.961 in MODEL 211.028

AH01.45-P-
0001-01TD

General information on
inspecting cylinder walls

ENGINE 111, 601, 604, 605, 606, 611,612, 647, 668 ...

AH01.00-
N-0300-
01A

General information on
inspecting cylinder walls

ENGINE 112, 113, 122, 134, 135, 137, 166, 275, 285, 611,
612, 613, 628, 629, 639, 642, 646, 647, 648 ...

AH01.00-P-
0300-01A

Information for assigning
the cylinder head gaskets

ENGINE 112 ENGINE 113

AH01.30-P-
1000-06V

Information on application
of sealant to end cover of
crankcase

ENGINE 628 ...

AH01.40-P-
1000-04B

Information on application
of sealant to end cover of
crankcase

ENGINE 628 ...

AH01.40-P-
1000-04C

Notes on application of
sealant to oil pan

ENGINE 628.960/962/963

AH01.45-P-
0001-01M

Notes on application of
sealant to oil pan

ENGINE 112...

AH01.45-P-
0001-01PV

Notes on application of
sealant to oil pan

ENGINE
113.963 /967 /968 /987 /988 /989 /990 /991 /992 /995

AH01.45-P-
0001-01R

Firing order

ENGINE 111 /, 601 /, 602

AH01.00-
N-0100-
01A

2001 Mercedes-Benz ML320

1998-2005 ENGINE Complete engine - 163 Chassis

me