Fein WSG8-115 Setup guide

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Repair instructions
Applies to:
WSG 8-115 (C); WSG 8-125 (C); WSG 12-125P (C); WSG 11-125 (C);
WSG 11-150 (C); WSG 15-125P (C); WSG 17-125P (C); WSG 17-125PS (C);
WSG 17
-
150P (C); WSG 17
-
70INOX (C)

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Contents
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Contents
1 Models described .............................................................................................................................. 4
2 Technical data ................................................................................................................................... 5
3 Symbols used .................................................................................................................................... 6
4 Notes and requirements .................................................................................................................... 7
5 Safety instructions ............................................................................................................................. 8
6 Tools, lubricants and auxiliary substances required ......................................................................... 10
6.1 Standard tools .......................................................................................................................... 10
6.2 Special tools ............................................................................................................................. 10
6.3 Lubricants and auxiliary substances required ........................................................................... 10
7 Test and diagnostics options ........................................................................................................... 11
8 Disassembly .................................................................................................................................... 12
8.1 Quick mains cable replacement ................................................................................................ 12
8.2 Removing the housing .............................................................................................................. 14
8.2.1 Removing the cover .......................................................................................................... 14
8.2.2 Disassembling the switch (WSG 8; WSG 11) .................................................................... 15
8.2.3 Disassembling the switch (WSG 12; WSG 15; WSG 17) ................................................... 17
8.2.4 Removing the carbon brushes ........................................................................................... 19
8.2.5 Removing the gearbox housing ......................................................................................... 20
8.3 Removing the motor ................................................................................................................. 22
8.3.1 Removing the stator .......................................................................................................... 22
8.3.2 Removing the armature ..................................................................................................... 24
8.3.3 Disassembling the armature .............................................................................................. 25
8.4 Removing the gearbox ............................................................................................................. 27
8.4.1 Removing the bearing plate ............................................................................................... 27
8.4.2 Disassembling the bearing plate ........................................................................................ 28
8.4.3 Disassembling the gearbox housing .................................................................................. 30
9 Assembly ......................................................................................................................................... 32
9.1 Fitting the gearbox .................................................................................................................... 32
9.1.1 Assembling the gearbox housing ....................................................................................... 32
9.1.2 Assembling the bearing plate ............................................................................................ 33
9.1.3 Positioning the bearing plate ............................................................................................. 35
9.2 Fitting the motor ....................................................................................................................... 36
9.2.1 Assembling the armature................................................................................................... 36

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9.2.2 Fitting the armature ........................................................................................................... 37
9.2.3 Fitting the stator ................................................................................................................ 38
9.3 Fitting the housing .................................................................................................................... 40
9.3.1 Fitting the gearbox housing ............................................................................................... 40
9.3.2 Positioning the carbon brushes ......................................................................................... 42
9.3.3 Assembling the switch (WSG 8; WSG 11) ......................................................................... 43
9.3.4 Assembling the switch (WSG 12; WSG 15; WSG 17) ........................................................ 45
9.3.5 Fitting the cover ................................................................................................................. 47
9.4 Setting gearbox clearance ........................................................................................................ 48
10 Inspection following repairs ............................................................................................................. 49

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Models described
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1 Models described
These repair instructions describe how to repair the following models:
Model Material number
WSG 8-115 (C) 7 222 34 .. .. .
WSG 8-125 (C) 7 222 35 .. .. .
WSG 12-125P (C) 7 222 36 .. .. .
WSG 11-125 (C) 7 222 37 .. .. .
WSG 11-150 (C) 7 222 38 .. .. .
WSG 15-125P (C) 7 222 39 .. .. .
WSG 17-125P (C) 7 222 40 .. .. .
WSG 17-125PS (C) 7 222 41 .. .. .
WSG 17-150P (C) 7 222 42 .. .. .
WSG 17-70INOX (C) 7 222 43 .. .. .

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Technical data
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2 Technical data
Technical data
The complete technical data can be found in the operating instructions for the model.
Troubleshooting
Troubleshooting for all devices can be found in the FEIN electronic information system.
Specific test specifications and measured values
Up-to-date test data for all devices can be found in the FEIN electronic information system.
Special tools, lubricants and auxiliary substances
The special tools catalogue and the lubricants and container sizes available from FEIN can be found in the
FEIN electronic information system.
Lists of spare parts
Lists of spare parts and exploded views are available online in our spare parts catalogue, which can be
accessed via the FEIN website.
Connection diagram
The connection diagram can be found in the FEIN electronic information system.

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Symbols used
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3 Symbols used
Refers to measures for avoiding the risk of injuries.
Refers to information or instructions that should be followed. Non-observance can result in
damage or malfunctions.
Read the operating instructions.
Indicates notes that provide information or instructions that may provide a better understanding
and contribute to the more effective use of the product.
Part of the navigation interface.

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Notes and requirements
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4 Notes and requirements
Please note
These instructions are only intended for persons with suitable technical training. It is assumed that the
reader has mechanical and electrical training.
Only use original FEIN spare parts!
Provisions
Please note that power tools may only be repaired, maintained and checked by a trained electrician, as
improper repair can result in serious risks to the user.
Outside Germany, the regulations applicable in the relevant country must be observed.
The provisions set out in DIN VDE 0701-0702 should be observed after repairs.
The relevant accident prevention regulations are to be observed during commissioning.
The German Equipment and Product Safety Act [ProdSG] applies for correct use.
Disclaimer
The content of this documentation has been carefully reviewed and produced to the best of our knowledge.
C. & E. Fein GmbH assumes no responsibility for the completeness, relevance, quality or correctness of the
information provided.
Liability claims against C. & E. Fein GmbH that relate to material or immaterial damage caused by the use
or failure to use the information provided or by the use of incorrect or incomplete information are excluded.
Claims relating to acts committed intentionally or through gross negligence are categorically excluded.
INFORMATION
Read the operating instructions for the product before
carrying out any repair work.

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Safety instructions
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5 Safety instructions
5.1 Structure
5.2 Danger classification
Warning
This warning refers to a dangerous situation. If the situation is not avoided, this may result in severe injuries
or death.
Caution
This warning refers to a potentially dangerous situation. If the situation is not avoided, this may result in
slight or minor injuries. This may also be used as a warning against material damage.
Please note
Indicates a potentially harmful situation. If this situation is not avoided, the product or an object in its
environment could be damaged.
SIGNAL WORD FOR THE DANGER
CLASSIFICATION.
Type and source of the danger.
Possible consequences.
Measure that must be taken in order to avoid this danger.
WARNING!
Type and source of the danger.
Possible consequences.
Measure that must be taken in order to avoid this danger.
CAUTION!
Type and source of the danger.
Possible consequences.
Measure that must be taken in order to avoid this danger.
PLEASE NOTE:
Type and source of the danger.
Damage to the product or its environment.
Measure that must be taken in order to avoid this danger.

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Safety instructions
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5.3 Information
Indicates notes that provide information or instructions that may provide a better understanding and
contribute to the more effective use of the product.
INFORMATION
Tip

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Tools, lubricants and auxiliary substances required
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6 Tools, lubricants and auxiliary substances required
6.1 Standard tools
Slotted screwdriver small
Plastic hammer
Torx T15
T20
Punch 6 mm diameter
Arbor press
Ball bearing support 19 mm; 26 mm
Sleeve 35 mm inner diameter
19 mm outer diameter
14 mm inner diameter
42 mm outer diameter
30 mm inner diameter
20 mm outer diameter
15 mm inner diameter
27 mm outer diameter
15 mm inner diameter
4x round material 20 mm in diameter
Length 60 mm
6.2 Special tools
Drawing-off socket cap 64104150008
Chuck cone 19 mm diameter 64107019007
26 mm diameter 64107026000
Drawing-off plate 64102069007
Pipe 64101002004
Assembly aid 64122121010
Pressure piece 64122003000
6.3 Lubricants and auxiliary substances required
WSG 8-115 (C); WSG 8-125 (C); WSG 12-125P (C); WSG 11-125 (C); WSG 11-150 (C);
WSG 15-125P (C); WSG 17-125P (C)
Grease 04010101004 21 g Gearbox
WSG 17-125PS (C); WSG 17-150P (C); WSG 17-70INOX (C)
Grease 04010101004 29 g Gearbox

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Test and diagnostics options
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7 Test and diagnostics options
Currently unavailable.

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Disassembly
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8 Disassembly
8.1 Quick mains cable replacement
Tools:
- Torx T15
- Assembly aid
1. Unscrew the two screws (1).
2. Remove the cover (2).
3. Unscrew the screw (3).
4. Remove the cable clamp (4).
5. Remove the cover (5).
2
5
3
4
1 2

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Disassembly
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8.1 Quick mains cable replacement
6. Position the hook (1) in the opening (2).
7. Turn the hook and remove the cable (3).
8. Turn the hook and remove the cable (4).
9. Remove the cable with the plug (5).
2
1
2
2
3
4
5

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Disassembly
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8.2 Removing the housing
8.2.1 Removing the cover
Tools:
- Torx T15
- Assembly aid
1. Unscrew the two screws (1).
2. Remove the cover (2).
1 2

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Disassembly
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8.2.2 Disassembling the switch (WSG 8; WSG 11)
Steps that must be completed:
- Removing the cover
Tools:
- Torx T15
- Slotted screwdriver (small)
1. Unscrew the screw (1).
2. Remove the cable clamp (2).
3. Unscrew the two screws (3).
4. Remove the cover (4).
5. Remove the switch (5).
1
3
2
4
230 V variant
120 V variant
110 V variant
5
5
5

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Disassembly
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8.2.2 Disassembling the switch (WSG 8; WSG 11)
6. Remove the rubber cover (1).
7. Open the spring terminals by turning them.
8. Remove the four strands (2).
1
2

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Disassembly
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8.2.3 Disassembling the switch (WSG 12; WSG 15; WSG 17)
Steps that must be completed:
- Removing the cover
Tools:
- Torx T15
- Slotted screwdriver (small)
1. Unscrew the screw (1).
2. Remove the cable clamp (2).
3. Unscrew the two screws (3).
4. Remove the cover (4).
5. Remove the switch (5).
1
3
2
4
230 V variant
120 V variant
110 V variant
5
5
5

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Disassembly
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8.2.3 Disassembling the switch (WSG 12; WSG 15; WSG 17)
6. Lift the hook (1) on each side of the switch and remove
the electronics (2).
7. Remove the rubber cover (3).
8. Open the spring terminals by turning them.
9. Remove the four strands (4).
3 4
1
2

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Disassembly
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8.2.4 Removing the carbon brushes
Steps that must be completed:
- Removing the cover
Tools:
- Assembly aid
1. Lift up the spring (1).
2. Remove the carbon brush (2).
1 2

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Disassembly
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8.2.5 Removing the gearbox housing
Steps that must be completed:
- Removing the cover
- Removing the switch
- Removing the carbon brushes
Tools:
- Torx T20
- Torx T15
1. Unscrew the screw (1).
2. Remove the lever (2).
3. Remove the disc (3).
4. Remove the spring (4).
5. Unscrew the four screws (5).
2
1
3
4
5