Complete digital official shop manual contains service, maintenance, and troubleshooting information for the Mercedes-Benz ML320 1997-2009. Diagnostic and repair procedures are covered in great detail to repair, maintain, rebuild, refurbish or restore your vehicle like a professional mechanic in local service/repair workshop. This cost-effective quality manual is 100% complete and intact as should be without any missing pages. It is the same factory shop manual used by dealers that guaranteed to be fully functional to save your precious time.

This manual for Mercedes-Benz ML320 1997-2009 is divided into different sections. Each section covers a specific component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. It is in the cross-platform PDF document format so that it works like a charm on all kinds of devices. You do not need to be skilled with a computer to use the manual.

EXCERPT:
2009 Mercedes-Benz ML320
ENGINE Complete Engine - 164 Chassis
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Fig. 2: Locating Engine Number
Shown on engine 275
The engine number is located on the upper right transmission flange.
With OM 642 the engine number is located on the left front on the cylinder crankcase below the vacuum pump
With OM 651 the engine number is located on the left side on the cylinder crankcase below the vacuum pump
GENERAL INFORMATION ON INSPECTING CYLINDER WALLS - AH01.00-P-0300-01A
Engine 112, 122, 134, 135, 166, 271.951, 272, 611, 612, 613, 628, 629, 639, 642, 646, 647, 648, 651 CD
Pressure gloss marks, smooth spots
Individual blank points, e.g. in the middle of the cylinder barrel or around the cylinder head bolts.
Continue to use crankcase.
Fig. 3: View Of Pressure Gloss Marks & Smooth Spots
Visible mottling, friction marks
Starting from reverse area of the upper piston ring tapering downwards.
Traces of dry friction marks which cannot be felt, caused by oil film being washed off by fuel, for example from many cold starts when driving short distances.
Friction marks occurring mainly around the cylinder head bolts and on the pressure side are not a problem provided that they are smoothed out.
The piston rings are not damaged.
Continue to use crankcase.
Fig. 4: View Of Visible Mottling & Friction Marks
Ring shaped imprints
Visible imprints on cylinder barrel in the upper and lower reverse area of piston rings are not a cause for
complaint.
Continue to use crankcase.
Fig. 5: View Of Ring Shaped Imprints
Circumferential bright, reflecting, polished upper surfaces of cylinder
Starting from the reverse area of the upper piston ring with measurable, partial cylinder wear. The cylinder barrel is unusable.
Do not use the crankcase anymore.
Fig. 6: View Of Circumferential Bright, Reflecting, Polished Upper Surfaces Of Cylinder
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.
Do not use the crankcase anymore.
Fig. 7: View Of Roughened Mottling & Friction Scoring
Continuous individual traces of scratch
Caused by soiling, for example, by the back-pulsation of soot particles from the catalytic converter or exhaust.
Continue to use crankcase.
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.
Do not use the crankcase anymore.
Brown coloring of cylinder upper surface.
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.
Oil varnish above piston ring zone is normal and is not a reason for complaint.
Reuse crankcase provided no impermissible cylinder distortion is present.
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