Fein KFH17-8R Setup guide

Milling
34130534060
Printed in Germany
Repair instructions
Applies to:
KFH17-8R; KFH17-8RT

Milling
34130534060
Printed in Germany
Contents
C-SC_CSSM
Version 1.0
16.04.2020
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All rights reserved by FEIN, especially in case of property rights applications.
FEIN retains all rights of disposal, such as copying and circulation.
Contents
1Models described..............................................................................................................................4
2Technical data...................................................................................................................................5
3Symbols used....................................................................................................................................6
4Notes and requirements....................................................................................................................7
5Safety instructions.............................................................................................................................8
6Tools, lubricants and auxiliary substances required.........................................................................10
Standard tools..........................................................................................................................10
Special tools.............................................................................................................................11
Lubricants and auxiliary substances required...........................................................................12
7Test and diagnostics options...........................................................................................................13
8Disassembly....................................................................................................................................14
Removing the milling head.......................................................................................................14
Removing the guide plate unit...........................................................................................14
Removing the guide plate unit...........................................................................................15
Removing the handle (milling head)..................................................................................16
Removing the gearbox unit................................................................................................17
Removing the gearbox unit.......................................................................................................18
Removing the crown wheel ...............................................................................................18
Removing the drive shaft...................................................................................................20
Removing the grooved ball bearing (cover).......................................................................22
Removing the grooved ball bearing...................................................................................23
Removing the handle ...............................................................................................................24
Removing the housing..............................................................................................................26
Removing the electronics..................................................................................................26
Removing the carbon brushes...........................................................................................27
Removing the gearbox housing.........................................................................................28
Removing the gearbox housing.........................................................................................29
Removing the motor.................................................................................................................31
Removing the stator..........................................................................................................31
Removing the armature.....................................................................................................33
Disassembling the armature..............................................................................................34
9Assembly.........................................................................................................................................36
Assembling the motor...............................................................................................................36

Milling
34130534060
Printed in Germany
Contents
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FEIN retains all rights of disposal, such as copying and circulation.
Assembling the armature...................................................................................................36
Positioning the armature ...................................................................................................37
Fitting the stator ................................................................................................................38
Fitting the housing....................................................................................................................41
Assembling the gearbox housing.......................................................................................41
Positioning the gearbox housing........................................................................................42
Positioning the carbon brushes .........................................................................................43
Fitting the switch ...............................................................................................................46
Positioning the electronics.................................................................................................47
Assembling the handle.............................................................................................................49
Assembling the handle (applies to KFH17-8R)..................................................................49
Assembling the handle (applies to KFH17-8RT 120V).......................................................51
Assembling the milling head.....................................................................................................54
Assembling the grooved ball bearing.................................................................................54
Assembling the grooved ball bearing (cover).....................................................................55
Assembling the drive shaft ................................................................................................57
Assembling the crown wheel.............................................................................................60
Assembling the gearbox unit.............................................................................................63
Assembling the handle......................................................................................................65
Assembling the guide plate unit.........................................................................................66
10 Inspection following repairs .............................................................................................................68

Milling
34130534060
Printed in Germany
Models described
C-SC_CSSM
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FEIN retains all rights of disposal, such as copying and circulation.
1 Models described
These repair instructions describe how to repair the following models:
Model
Material number
KFH17-8R
7 238 16 .. .. .
KFH17-8RT
7 238 17 .. .. .

Milling
34130534060
Printed in Germany
Technical data
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FEIN retains all rights of disposal, such as copying and circulation.
2 Technical data
Technical data
The complete technical data can be found in the operating instructions for the model.
Special tools
The special tools catalogue can be found in the FEIN electronic information system.
Lubricants and auxiliary substances
The lubricants catalogue 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.
Documents required for further repair work
- FEIN lubricants catalogue
- FEIN special tools catalogue
- All relevant service communications

Milling
34130534060
Printed in Germany
Symbols used
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FEIN retains all rights of disposal, such as copying and circulation.
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.

Milling
34130534060
Printed in Germany
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.

Milling
34130534060
Printed in Germany
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.

Milling
34130534060
Printed in Germany
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

Milling
34130534060
Printed in Germany
Tools, lubricants and auxiliary substances required
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FEIN retains all rights of disposal, such as copying and circulation.
6 Tools, lubricants and auxiliary substances required
Standard tools
Dial gauge
Arbor press
Plastic hammer
Puller
2-armed
Cross-head screwdriver
PH2
Slotted screwdriver
small
Socket head wrench
3 mm
Socket head wrench
5 mm
Wrench
10 mm
Circlip pliers
inside; outside
Hook and pin wrench
58/62
Open-end wrench
Size 13
Torx screwdriver
T15
Torx screwdriver
T20
Magnetic lifter flexible
Punch
6 mm diameter
Ball bearing support
19 mm; 26 mm
Sleeve
12 mm inner diameter
35 mm outer diameter
40 mm outer diameter
48 mm outer diameter
54 mm outer diameter
35 mm outer diameter
26 mm inner diameter
30 mm outer diameter
18.5 mm inner diameter
40 mm outer diameter
26 mm inner diameter
Pipe
75 mm outer diameter
72 mm inner diameter
L=80 mm

Milling
34130534060
Printed in Germany
Tools, lubricants and auxiliary substances required
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Special tools
Drawing-off socket cap
64104150008
Chuck cone
19 mm diameter
64107019007
26 mm diameter
64107026000
Drawing-off plate
64102067005
Pipe
64101002004
Assembly aid
64122121010
Pressure piece
64122003000
Extractor tool
64104101002
Mounting device
64122134000

Milling
34130534060
Printed in Germany
Tools, lubricants and auxiliary substances required
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Version 1.0
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FEIN retains all rights of disposal, such as copying and circulation.
Lubricants and auxiliary substances required
The manufacturer's specifications for the lubricants used can be found in the FEIN lubricants catalogue.
Grease
SM 0021
20 g
Gearbox
Grease
SM 0022
n/a
Mounting of indexable inserts
Thread locking compound
Loctite 242
n/a
Screws

Milling
34130534060
Printed in Germany
Test and diagnostics options
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FEIN retains all rights of disposal, such as copying and circulation.
7 Test and diagnostics options
Test data
The permitted parameters for the machine can be found in the FEIN electronic information system.

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
8 Disassembly
Removing the milling head
Removing the guide plate unit
Tools:
- Wrench 10 mm
Loosen the locking knob (1).
Unscrew the guide plate unit (2).
1
2

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
Removing the guide plate unit
Tools:
- Torx T20
- Wrench 10 mm
- Slotted screwdriver
1. Unscrew the four screws (1).
Remove the guide plate (2).
Remove the locking knob (3).
INFORMATION
Warm up the screws using a hot air gun because they have
been glued in with a thread locking compound.
Remove the spacer sleeve (4).
Remove the sealing ring (5).
INFORMATION
The sealing ring (5) is destroyed during removal and must be
replaced.
1
4
2
3
5

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
Removing the handle (milling head)
Steps that must be completed:
- Removing the guide plate unit
Tools:
- Socket head wrench, 3 mm
- Socket head wrench, 5 mm
1. Unscrew the four screws (1).
2. Remove the holder (2).
Unscrew the screw (3).
Repeat step 3 on the opposite side.
Remove the handle (4).
1
3
2
4

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
Removing the gearbox unit
Steps that must be completed:
- Removing the guide plate unit
- Removing the handle
Tools:
- Torx T20
- Magnetic lifter
- Mounting device 64122134000
1. Unscrew the four screws (1).
INFORMATION
Using the mounting device, rotate the flywheel mass so that
the mounting holes are over the screws.
2. Remove the gearbox unit (2).
1
2

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
Removing the gearbox unit
Removing the crown wheel
Steps that must be completed:
- Removing the guide plate unit
- Removing the handle
- Removing the gearbox unit
Tools:
- Circlip pliers
- Extractor tool 64104101002
- Slotted screwdriver
- Magnetic lifter
- Mounting device 64122134000
1. Secure the gearbox unit with the mounting device.
2. Remove the circlip (1).
3. Remove the washer (2).
INFORMATION
Use a new circlip for assembly each time.
1
2

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
8.2.1 Removing the crown wheel
Remove the crown wheel (1).
Remove the shims (2).
6. Remove the sealing ring (3).
INFORMATION
The sealing ring (3) is destroyed during removal and must be
replaced.
2
1
3

Milling
34130534060
Printed in Germany
Disassembly
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FEIN retains all rights of disposal, such as copying and circulation.
Removing the drive shaft
Steps that must be completed:
- Removing the guide plate unit
- Removing the handle
- Removing the gearbox unit
Tools:
- Torx T15
- Puller
- Mounting device 64122134000
- Circlip pliers
- Slotted screwdriver
- Hook and pin wrench 58/62
- Pipe, 75 mm outer diameter, 72 mm inner diameter, length 80 mm
1. Remove the circlip (1).
2. Remove the washer (2).
INFORMATION
Use a new circlip for assembly each time.
3. Unscrew the four screws (3).
INFORMATION
Warm up the screws using a hot air gun because they have
been glued in with a thread locking compound.
2
1
3