Claas Mercedes-Benz OM906LA Instrucciones de funcionamiento
Service & Parts
Mercedes-Benz OM906LA
Mercedes-Benz OM926LA
Repair manual
1044-004
Table of contents
Introduction
General Information................................................................................................................................. 4
General repair instructions..................................................................................................................... 8
Torque settings........................................................................................................................................ 20
CCN explanation
CCN (CLAAS Component Number)........................................................................................................ 32
CCN (CLAAS Component Number)
Safety
General Information................................................................................................................................. 36
01 Engine
0102 Complete component..................................................................................................................... 48
0105 Engine suspension......................................................................................................................... 59
0110 Engine housing............................................................................................................................... 61
0115 Engine unit...................................................................................................................................... 81
0120 Cylinder head / Valves / Idler gear................................................................................................ 117
0125 Injection - / Fuel system................................................................................................................. 152
0130 Lubricating oil system.................................................................................................................... 176
0135 Cooling system............................................................................................................................... 196
0140 Exhaust system.............................................................................................................................. 212
0145 Air intake......................................................................................................................................... 231
0150 Engine attachment parts................................................................................................................ 234
0155 Engine control................................................................................................................................. 255
0165 Exhaust gas treatment................................................................................................................... 257
Index.................................................................................................................................... 284
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Introduction
General Information
162113-001
Validity of manual
This manual applies to the Mercedes-Benz diesel
engines below:
Engine Type design Engine no.
OM 906 LA 906.991 906.991-00-xxxxxx
OM 926 LA 926.929 926.929-00-xxxxxx
OM 926 LA 926.959 926.959-00-xxxxxx
OM 926 LA 926.970 926.970-xx-xxxxxx
123139-005
Handling the manual
This repair manual should help you to maintain
ongoing operational capacity. The high value of the
harvesting machine is ensured through careful
maintenance and technical monitoring by customer
service.
This repair manual is a compilation of our service
technicians' and shop-floor experience.
The picture sequence demonstrates the steps in a
repair procedure. The text provides you with the
information required for making adjustments, using
special tools and further similar information.
Essential repairs are listed in such a way that even
individual and small repairs can be easily found and
followed.
Supplements are added to reflect the ongoing
technical development of the machines and the
manual is thereby continuously being updated as a
reference book.
As a precaution, always compare the setting values
and fill quantities with the most recent operator's
manual and the technical systems documents for the
respective machine.
Texts and figures
Pictures and graphics apply to all models covered by
this manual. Differences are highlighted by captions
below the figures.
In general, texts are short and apply to all models
covered by this manual. Differences are highlighted by
intermediate headings.
Different text categories can be easily identified by the
formatting. The following different formattings are
distinguished:
Introduction
General Information
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Formatting Meaning Description
Description Descriptive text Further information on the subject.
–Procedure
instructions
Process Operations which must be carried out one after the
other.
Result Result Result of the processes carried out.
References can be easily identified by corresponding
symbols. The following symbols are distinguished:
Symbol Meaning Description
See index The symbol indicates that further information on
this subject is available in other sections of this
manual.
See the index of the
Operator's Manual in
question
The symbol indicates that further information on
this subject is available in the Operator's Manual of
the machine or of the implement in question.
Document structure based on the assembly
structure
The chapters of the present manual are subdivided
into assemblies as far as contents permit. The
structure of these assemblies is the same in all
chapters.
Different product groups have different assembly
structures. CLAAS makes every effort to keep this
assembly structures identical in any document.
Search and find
Due to the constantly recurring assembly structure,
the subject in question can be quickly found using the
table of contents or the header of this manual.
In addition, the index provided in this manual is a
useful tool for locating a subject. The index can be
found on the last pages of this manual.
Directions
Front, rear, right and left refer to the direction of
forward travel. If necessary, a direction arrow is used
for indicating the direction of travel in figures.
Introduction
General Information
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Abbreviations
Abbreviation Description
bar bar (unit for pressure)
approx. approximately
cm Centimetre
DIN German Standardization Institute
EC European Community
EN European Standard
GPS Satellite navigation system
h Hours
Ident no. Identification number of machine
ISO International Standardization Organisation
kg Kilogram
kPa Kilopascal
km Kilometre
km/h Kilometres per hour
m Metre
mm Millimetre
Nm Newtonmetre
psi pound per square inch
StVZO German Regulations Authorizing the Use of Vehicles for Road Traffic
e.g. for instance
% percent
°C degrees Celsius (unit for temperature)
Introduction
General Information
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Technical terms
Technical term Description
recycle Re-use of used, defective or no longer required products
Season Recurring periods of a year
Ignition TDC Ignition top dead centre (diesel engine piston position)
Overlap TDC Valve overlap top dead centre (diesel engine piston position)
BDC Bottom dead centre (diesel engine piston position)
Your CLAAS Service Department
Introduction
General Information
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General repair instructions
123153-002
Technical specifications
Technical specifications, dimensions and weights are
non-binding. Technical specifications are subject to
modification in the course of technical development,
and all errors and omissions are excepted.
123192-003
Information on proper repairs
►Mark rotating machine components before
removing or dismounting them in order to ensure
well-balanced component seating on the correct
side after refitting.
►The slots of expansion pins must always point to
the loaded side.
When they are installed with a 90° twist, they
come loose, fall out or shear off.
►Replace cotter pins, locking wires, sheet retention
devices, lock washers and spring washers in the
repair process.
►Align sprockets and V-belt pulleys with one
another.
►Observe the information in the hydraulic system
chapter when working on the hydraulic system.
►Do not mix different oil grades.
123164-004
Self-locking bolts
Self-locking bolts must not come in contact with
sealing compound.
►Tighten self-locking bolt speedily up to the
specified torque.
► The full hardening time can be reduced by
heating-up, e.g. to 15 minutes at + 70 °C.
► The full load capacity is achieved after
24 hours at + 20 °C.
►When unscrewing self-locking bolts, unscrew
them quickly.
120820-003
Liquid locking compound
►Use liquid locking compound (glue) only at the
spots described in the Repair Manual.
►The surfaces to be joined must be absolutely
clean and free of grease.
► A suitable cleaner and an activator possibly
delivered along with the glue can be used for
cleaning.
►No cleaner residues may remain on the surfaces
to be joined.
This applies in particular to tapped holes with a
bottom.
► Let the surfaces dry well before applying the
glue.
1
151599-001
Introduction
General repair instructions
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►Apply the glue only in the areas shown in the
figure if possible.
When applying the glue at an unfavourable spot
or when applying too much glue, the joint may
tear off when loosening.
►Observe the glue producer's instructions for use
and application!
A joint secured by liquid locking compound can be
loosened by heating up to approx. 200 °C.
120771-004
Steel roller chains
Tensioning
Checking the tension of steel roller chains:
►Apply a small load to the tight span.
►Push down the slack span in the middle between
the sprockets with your thumb.
You should be able to push down the slack span
around 2 % of the spacing between the axles.
Example:
Axle spacing (A) = 500 mm
Pushing distance (x) of slack span = approx. 10 mm
Chain connector
►The closed side of chain connector (1) must point
in running direction (L)!
A
x
2
13827-006
1
3
123668-001
Introduction
General repair instructions
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120801-005
Taper ring fasteners
Dismounting
►Slacken off tapered ring (1) with a blow.
► Use an auxiliary tool (2) if required.
Installation
13975-003
NOTICE! Sticking together at the taper ring fasteners.
The joint cannot be loosened or comes off only with
difficulty.
► Do not install parts with tough grease.
►Clean shaft (1), hub (2), parallel key (3) and
tapered rings (4) thoroughly and apply some
CLAAS AGRIGREASE LC 00 / 000.
►Tighten to the specified torque.
► In case of several taper ring fasteners fitted
behind one another, tighten those
separately.
► Use an auxiliary tool (5) if required.
1
2
4
154769-001
4
3
2
1
4
5
154486-001
5
4
3
2
1
6
154768-001
Introduction
General repair instructions
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Este manual sirve para los siguientes modelos
1
