N47_en.pdf

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Product Information.
N47 engine.
BMW Service
The information contained in the Product Information and the Workbook form an integral part of
the training literature of Aftersales Training.
Refer to the latest relevant BMW Service information for any changes/supplements to the
technical data.
Information status: November 2006
Contact: conceptinfo@bmw.de
© 2006 BMW AG
München, Germany
Reprints of this publication or its parts require the written approval of
BMW AG, München
VS-12 Aftersales Training
Product Information.
N47 engine.
Rear chain drive
Vacuum pump in the oil sump
Balancing shafts in the crankcase
Notes on this Product Information
Symbols used
The following symbols are used in this Product Information to improve
understanding and to highlight important information:
3
contains information to improve understanding of the systems
described and their function.
1
identifies the end of a note.
Information status and national variants
BMW vehicles satisfy the highest requirements of safety and quality.
Changes in terms of environmental protection, customer benefits and
design render necessary continuous development of systems and
components. Discrepancies may therefore arise between specific details
provided in this Product Information and the vehicles available during the
training course.
This documentation only describes European left-hand-drive variants. In
right-hand-drive vehicles some control elements and components are
arranged differently from what is shown in the graphics in this Product
Information. Further discrepancies may arise from market- or country-
specific equipment specifications.
Additional sources of information
Further information on the individual subjects can be found in the
following:
- in the Owner's Handbook
- in the BMW diagnosis system
- in the Workshop Systems documentation
- in BMW Service Technik.
Contents.
N47 engine.
Objectives
Product Information and reference material for
practical applications
1
1
3
3
Models
Engine variants
Introduction
System overview
Engine identification
5
9
9
System components
Overview of engine mechanicals
Crankcase
Cylinder head and cover
Sump
Crankcase breather system
Crankshaft and bearings
Connecting rods and bearings
Pistons, piston rings and gudgeon
Balancing shafts
Rotational vibration damping
Camshaft drive system (timing gear)
Belt drive and auxiliary equipment
Camshafts
Lever tappets
Hydraulic valve clearance adjustment
Valves, valve guides and valve springs
Overview of the oil supply
From the sump to the oil filter
Oil filtration and oil cooling
Oil spray nozzles and piston cooling valve
Oil monitoring
11
11
18
24
30
31
37
42
47
54
57
61
64
67
72
74
76
80
82
87
90
92

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