Fein MSf 679d User manual

To be handed to the workshop
Operating instructions for the Angle Grinder
MSf 679d, MSf 679c and for MSfa 679d,
MSfa 679 c with peak current limitation
1. Te ch nical Data
Type of current: ~ (AC single phase)
Fuses for 220 V, MSf 679: 10 A slow or 15 A fast or automatic fuse 10 A type G.
MSfa 679: 10 A slow or automatic fuse 10 A type Lor automatic fuse 16 A type H.
Type
Speed
Input
Output
Net Weight
R.P.M. Watts Watts
lb s I
kg
-I
MSf679d
l 1400 14 6.3
MSfa 679d'
J 8500 2000
MSfa 679c'
}
MSf679c
6600 2000 1400 14 6.3
• a vailable for 220 V ~ only. " or
5/s"
respectively
2. Construct i on
The angle grinders MSf 679 and MSfa 679 are electric too ls of
Class II according to VDE regulations 0740. The protective insul-
ation is additional to the normal insulation and protects the ope-
rator against e lectri c accidents ca us ed by defective normal insul-
ation. The protective insulation is attained by the motor housing
made of Polyamide- shockproof and resistant to leakag e currents-
and by insulating the armature against the pinion. The machine
is supplied with a two-core cable without earth wire and must
not be earthed. The dustproof switch is mounted in the handle.
The machine is tested with the prescribed test voltage of 4000 V.
It is radio suppressed according to radio interference degree
VDE 0875. The bevel gear ha ve helical teeth. Gears are l ap p ed
for accura te me sh ing; both parts to be suppli ed as pairs only.
Gears and bearings are protected against dust and loss of
grease.
Part of the cooling air is led by conductors through the gearing
in the gear h ead for additional cooling.
To prevent the overbridging of the insulation no ad ditional
mark i ng plates and signs must be riveted or screwed on the
hou sing. We r ecolnmend the use of transfers o nl y.
3. Connection an Operation
Main voltage must correspond to the operating voltage mark ed
on th e rating plate \ The tool can be plugged into plain or safety
sockets. S witch mus t be in the "Off" position when connec ting .
The grinder s must n ot be us ed wit hout wheel guards .
To switch on the machines MSfa 679 d/c, the l ever must engage
the notch (see di recti on label on the machine).
BE 242/e BXEW 5.73 Pr in te d in Gem1any
Grinding w heel
max .
Thread
periphera l
type
I
max. dia I max. w idth
I
bore
speed
of
in.
I
mm
in.
I
mm in.
I
mm ft/s I rn!s
spindle
flexible
7 178 3/s 10
7/s
22.2 262 80
M14
..
grinding
wheel
9 230 3/s 10 7/s 22.2 262 80 M 14
''
Do not exceed the dimensions of grinding wheels stipulated.
When working with crank wheel hold tool in such a position
that the grinding wheel works under an angle of 15-30 °. Fo r
cutting off use cutting wheels together with the prescribed
flanges and, in addition to this , our wheel guard wit h adjustable
support for cutting off stone.
Moreover take care that, when cutting off, the handle is screwed
into the right-hand bore of the housing (seen from above) in
order to prevent the grinding dust from falling into the air-
intake of the machine.
Furthermore, the handle should be screw ed into the righthand
bore of the hou s ing (seen from above) for cutting off, in order
to prevent the grinding dust from being thrown into t he air
inlet of the machine .
4. Maintenance
Th e angle grinder require s adequate maint enance . Before start-
ing any maintenance wo rk pull plug from socket.
After 3-4 weeks the machine, in particular carbon holders and
in s ulated parts, should be cleaned of carbon dust and dirt. This
is
done by means of a brush or compressed air.
Brush gear a utomaticall y releases. When the brus hes are run
down the machine is switched off. After refitt ing new carbon
brushes check that th ey move easily in the i! hold er. Run too l
unloaded for abo ut 15 minutes to allow brushe~ to bed in. Please ,
onl y use original Fein carbon b rushe s Order Reference EZ 11-61.
In ord er to prevent accidents check cab le at regular intervals .
To replace the cable take off screw (88) and switch lever (87 ).

63
QJ
73-~-
~
51 - - - -
-,
50 -- -
49 •
30
33 34 35
r-·
I•-- 57
L.~ - -58
® - - 56
48 ~
47 ~
60--~
(") - 55~@· Q)
,.1I I J, 1
59-~
46-
8' r·
:§j
s .
~ I
::l i
>:1.
61 rE &@ - ~-·-J.J
62 -~ J '"" / ,'""I t I
~i- ___ J
fi7 _ _ 1
~--~--
65 -- - --- -----
~/- - ',,
/ .
( (~ ~~~~ )) J
', ' .... ___ ... ,:'
'-...':..-_-_ ________ - -- .: :-.::-:.,-"'
45 44 43
-- - 52
~ - 53
81
36
--
Jill
l l
l
20
8
66 -~-- --
89
T ype MSf 679 doe s not c ont ain th e parts 92 and 93
7
90
91
1' t- -17
~-16
&--15
1 14
---'11
....
,;-
, ,, ~!
76
- -11
I 14
e 15
~- - 16
1 -1-- 17
n et
EZ 21-4-1 --------~
motor housin g

b
b
a
b
b
b
b
b
b
b
b
b
b
b
Component Parts
'"d
Order
"'
:>,
~
+"'
Description
z
Reference
0
0
1-17 1) I
MK3-111-1
I 1
motor housing , assembled
1 MK 3-111 1
motor housing
7 PT 27-30 2
cover
8
state ty pe
1
pole housing, assembled with
and tension
winding
9
SR 1-M5x80 2
hexagon screw
10
PT 37-8 2
securing plate
11
EZ 12-47-2 2
carbon holder assembled
with wire
14
EZ 11-61 2
carbon brush
15
EZ 13-9 2
carbon holder cap
16
PT 27-29 2
motor housing cover
17
SR6k-M3x6
4
fillister head countersunk screw
20-26
stat e type 1
armature with winding, commutator
and ten s ion
and fan
FL 4-11-1 1 fan, assembled
30-63
GH 6-55-3 1
gear housing, assembled for
MSf 679d, MSfa 679d
30-63
GH 6-55-4 1
gear housing, assembled for
MSf 679c, MSfa 679c
30
GH6-55
1
gear housing
33 LK 16-38 1
grooved ball be aring
34
PT 11-58 1
ball bearing cover
35
DJ 1-50 1 felt ring
36
JS 28-8 1
air conductor
39
SR 2b-M4x16
3
cylindrical screw
40
RJ 27i-12X28,1 1
Nilos ring
41
RJ 24-29
washer for pinion
42 BF 21-4x4x14 1
fitting key
43 2) ZR 13-80 1
be v el pinion, 21 teeth
(MSf 679 d, MSfa 679 d)
43
2)
ZR 13-76 1
bevel pinion, 17 teeth
(MSf 679 c, MSfa 679 c)
44
PT 4-16 1
disc
45
MR 19-1 1
hexagon nut
46
PT 19-33 1
bearing plate
46a
PT 11-62 1
gr ea se retaining disc
47
DJ 1-49 1
felt ring
48 RJ 27a-4ox2o,2 1
Nilos ring
49 LK 16-25 1
ball bearing
50
PT 16-36 1
end cover
51
I SR5-M4x12
I 3 I
countersunk screw
52
WB 6-47 1
driving shaft
53
BF 21-5x5x16 1
fitting key
54 2)
ZR 14-124 1
be v el gear whee l, 58 teeth
(MSf 679 d, MSfa 679 d)
542)
ZR 14-120 1
bevel gear wheel, 60 teeth
(MSf 679 c, MSfa 679 c)
55
RJ 29a- 16xo,6 1
circlip Seeger
56 RJ 19-4 1
sea ling ring
57 LK 6-24 1
needle bearing
58 RJ 16-20 1
circlip Seeger
59
RJ 24-55 1 w
as her for be a ring plate
60 DJ 12-2 1
ring
61 DJ 11-5x9 4
sealing ring
62
SR 33-M5x20 4
hexagon socket cylindrical screw
63
JS 20-20 1
plastic plug
70 FD 5-7 2 spring
71
LK 16-22 1 groo v ed ball be aring
71 a RJ 28-10xl,2
1 circlip Seeger
1)
When ordering state type and tension .
b
a
a
a
a
b
b
0
z
+"'
....
<0
p..
72
72a
73
76
80-89
80-89
92,93
80
81
81
82
83
84
85
86
87
87
88
89
90
91
92
93
67
67
65
66
95
2)
Parts 43 and 54 are lapped together and can be supplied in pairs only .
Order
Reference
SR33-M5x30
PT 5d-M5
SR33-M5x30
SR2 -M4x5
GH 4-67-1
GH 4-67-21
GH4-67
EZ 1-61
EZ 1-72
PT 31-21
SR3-M3,5x15
EZ 22-36
SR 2-M3,5x10
DJ 1-52
SA 5-47
SA 5-55
SR 3-M3x15
DJ 5-41
JS 13-95
EZ 7-106
EZ 21-4-1
RJ
1-1 82
M 10-70-1
M 10-71-1
M8 -65
M8-52
MZ 19-32
EZ 11-61
Z 7-SW 17 L
z 10-10
z 13-22
MZ60 -3 /FG9
M Z60-5/FK5
:>,
a
Description
4
socket head cap screw
8 securing plate (for pos . 72 and 73)
4
socket head cap sc r ew
1 cy lindrical screw
1
handle assembled with switch
f or MSf 679d, c
1
handle assembled with switch
f or MSfa 679d , c
1
hand le
1 sw
it ch for MSf 679d, c
1 sw
itch for MSfa 679d, c
1
cab le clamping bridge
2 fil lister head screw
1 ca
pacitor
2 c
yli ndrical scre w
1 f
elt ring
1 sw
itch lever for MSf 679d, c
1
switch lever for MS fa 679d, c
1
fillister head scre w
1
se a ling plate
1 c
ab le protecting sle ev e
1
ca b le
1
complete series re sistance lf or MSfa
1 int
ermediate ri ng 67 9 cl , c
Acce5sories
I
1 w
hee l guard assemble d for
M Sf 679d, MSfa 679d
1 w
heel guar d as se mbled f or
I
MSf 679c, MSfa 679c
I 1
inner grinding wheel flange
1
outer grinding wheel flange
1 l at eral handle
2 sp
are carbon brushes
1 si
ng le end spanne r
1
hexagon sock et wre nch 4 mm
(5/32 in.)
1
peg spanner
1
tube of gear grease
1
tube of ball bear;ng grease

Unscrew the handle (80) off the motor housing (screws 72) and
draw it backwards. Loosen terminal clamp (82), clamp off the
cable from the switch (81) and draw it out.
The g~aring, working under high load, needs particularly good
lubrication. We re commend to renew the gear grease after
approx. 300 duty hours . Please, only use our special Fein gear
grease FG 9. A mixing of this grease with other greases endan-
gers the greasing capacities, and therefore also use FG 9 for th e
roller bearings in the gear head. In order to check and renew
the gear grease loosen the screws (62) and remove bearing
plate (46) with driving shaft (52). When removing the bearing
plate and in particular when re-assembling, please, don't lose
packing rings (59) and sealing ring (60). The packing rings are
needed for adjustment of the gearing; their l oss may lead to
damage.
After 900 duty hours the machine should be thoroughly cleaned .
Rinse ball bearings in clean solvent and pa ck with fresh greas e
as per table below. The space between inner and outer ring is to
be one third f illed with grease in order to prevent overheatin g
of th e bearings .
For good and adequate lubrication and in order to avoid over-
heating it is important to pack the gearing with the grades and
quantities of grease listed in the table below.
Type of
Quantity
Order Contents
grease
I
Reference
I
oz
g oz g
~
-
For
gears
FG9
3 90 MZ 60-4/ FG 9 6 180
For ball bearings
FK5
MZ 60-5/ FK 5 0,2 5
for ball
approx.
1
/•
bearing
of the
part 71
space be·
FG9
tween inner
MZ 60-3/ FG 9 3 90
for roller
and outer
bearings
ring
parts 33,
49, 57
Larger quantities of grease are packed in tins.
No claims can be entertained for damage du e to negligent main-
tenance and inadequate lubrication.
Please be sure that all elec tric parts are onl y cleaned dr y.
5. Dismantling
The tool should only be taken apart by an expert working in
the following sequence:
1. Re move grinding whe el and wheel guard.
2. Remove motor housing cover (16), unscre w carbon holder cap
(15) and ta .ke out carbon brush es (14).
3. Remove screws (62) and dra w off bearing plate (46) with
driving shaft (52) and bevel gear w heel (54). Don 't los e
packing rings (59 ) with sealing (60)!
4. Loosen screws (73) and draw gear housing (30) with armature
(20) out of motor housing (1).
5. Unscrew hexagon nut (45) off armature shaft (20) and take
out washer (44), bevel pinion (43), fitting key (42), washer
(41) and Nilos ring (40). Then dra w armature shaft (20) out of
gear housing (30).
6. Loosen screws (39) and take air conductor (36), felt r ing (35),
cover plate (34) and ball bearing (33) out of gear housing (30).
7. Remove needle bea ring ring with sealing ring (56) from dri -
ving shaft (52).
Remove circlip Seeger (55), be ve l gear wheel (54) and fitti ng
key (53). Unscrew screws (51), remove flange (50) and draw
driving shaft (52) with ball bea ring (49 ) out of bearing plate
(46).
8. Loosen screw (88) and remo ve switch lever (87). Remove
screws (72) and push handle (80) backwards. Clamp off cable
and capacitor (84) from motor housing (1) and r emove switch
(81).
Re-assemble in reverse sequence . When _refitting pinion and
bearing plate , please , bear in mind that washers (41 , 59) are to
be placed in their rig ht places, as they are needed for accurate
adj ustment of the gea ring. When fitting bea ring plate, check that
bevel gear wheels mesh accurat ely. For this purpose turn
driving shaft (52) slightly; only then fasten screws (62).
6. Repair and Spare Parts
We recommend our FEIN Service Stations to carry out all over-
haul and repair work quickly and expertly.
We deliver special tools for th e repairs. The base tub e and t he
t wo-part base-plate are used to dismantle th e b evel gear wheel
(54 ), the dismantling device to dismantl e t he pinion (43) .
I
Type
I
Tube
I
Plate
I Dismantling
device
I
MSf 679 c, MSfa 679 c ZSo 8-1 I
ZSo 9-3 ZSo 11-1-1
I
MSf 679 d, MSfa 679 d
ZSo 8-1 ZSo 9-30 ZSo 11-2-1 I
The tube ZSo 8-1, th e base ZSo 28-2, the support ZSo 34-3 a nd
t he dismantling device ZSo 28-5-1 are used to disman tl e t he
pole housing .
The
spanner ZSo 77-7-1 is used to disas semble t he carbon
hold ers , the span ner ZSo 71 -6 to assem b le th em.
When ordering spare parts, pleas e, quote Type and Serial No.
of the machine as well as Order Reference of the required part
or send in the damaged part.
We draw yo ur atten t ion to the need to ca rry out a high vo ltage
t est in accordance with your local regulations (or VDE regula -
t ion 0740) befo re ta king a tool into service after any repan
c arried out by your own staff.
(