Fein ASb 636 User manual

ASb 636
To be handed to the workshop!
Operating instructions
for the double insulated and radio suppressed
Impact Wrench type ASb 636 (single phase A.C.)
and ASb 736 (42 Volts)
1. Technical data
Current: "' (single phase AC)
For screws
Speed R.P .M .
Taps Input Output
Max. tightening Net weight
Type
standard
I
high tensile
full load per min .
Watts Watts
torque
up to
up to
ASb 636 M 16 (5/s") M 12 (1/2") 850 1700
ASb 736
(42V)
2. Construction
This impa ct wrench is an electric tool of class II with protective
insulation without earth wire and is in accordance w ith the
VDE regulations 0740. The protective insul atio n is attained by
the shockproof motor h ous ing made of Polyamide and by
insulating the armature against the pinion. The protective insu-
lation is tested with the prescribed test voltage of 4000 V (1500 V
for class 1). The machine is radio suppressed in accordance with
radio interference degree N. It is supplied with a two-co re cable
without earth wire an d must not be earthed.
Gearing and percussion mechanism are totally enclose d in the
tool-h ea d casing; their const ruction is well-planned and clear.
The tool holder complies with international standards and has
a 1/2" square drive.
The machine is provided with a rev e rsing switch for clockwise
and anticlockwise rotation. It must not be operated when the
machine is running.
To prevent the overbridging of the insulation no additional
marking plates and signs must be riveted or screwed on the
housing. We recommend the use of transfers only.
Type ASb 736 for low tension (42 Volts) is of the same design,
but not radio suppressed.
3. Connection
Main voltage must correspond to the operating voltage mark ed
on the rating plate. The tool can be plugged into plain or saf ety
sockets.
BE 189/e X 6. 66 Printed in Germany
ft. lbs
I
kpm lbs
I
kg
I
.. .
1 ~ 0
73 10 5.1 2.3
230
4. Mode of Operation
Th e motor drives the tool holder with tool attached via gearing
and p ercuss ion mechanism. The direct dri ve is cut out as soon
as the screw or nut has been ro ughly run down. Once the motor
reaches its rated lo ad, the percussion mechanism comes into
operation and converts the drive force of the motor - which
continues to run at uniform speed - into an intermittent torque
with two strokes for eac h revo lution of the drive assembly.
Scr ews and nuts are slackened in reverse order: first percussion
strokes, followed by direct drive. The tool is easy to handle, as
the operator needs not exert any restraining torque. As the
clutch w ill always disengage as soon as th e rated load is
attained, the motor cannot be overloaded .
5.
Application
The full tightening or slackening action provided depends on the
time during which the percussion mechanism is allowed to run.
Max. tightening torque is the sum of the torque applied by each
stroke. According to the type of screwed co nn ection the max.
torque w ill generally represent approx. 120 single torque
strokes , which are applied in 3 to 5 seconds. Available max .
torque in normal service is 73lbs.ft (10 mkg) (see diagramm p.3).
There is no point in applying the tool for longer than 5 seconds
since the torque will not i ncrease any fu rther, w hile the tool
head w ill appreciably heat. Overheating will l ead to increased
wear of all percussion components and excessive lubri cant
cons umption .

63 35
Connecting plan
Distributing m_9in switch
EZ 1- 58
64 ns 36
61 60 58 59 57
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45 46
26
14
419 54 53 52 50 51
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Component Parts
0
z
Order
.._,
Description
...
Reference
:><
ro
0
0..
1-25
MK 1-18-6 1 I
motor housing, assembled
1-25
MK 1-18-5 1
motor housing, assembled
1
MK 1-18 1
motor housing
2 EZ 1-58 1
switch
3 EZ 22-35 1 capacitor
4 EZ 1-59 1 reversing switch
5-7 EZ 12-43-1 2
carbon holder, assembled
8 EZ 11-59 2
carbon brush
9 EZ 13-8 2
sliding cover
10 SR2-M3,5x12 4 cy lindrical screw
12
st a te typ e 1
pole housing with winding
and v oltag e
13 SR2-M3,5x45 I 2 cylindrical screw
13a PT 6-M3,5 2 securing plate
14 JS 28-4 1 insulation ring
15 JS 15-11 1
bolster
16 EZ 7-101 1 c
able
17
JS 13-7 1
cable protecting sleeve
18
PT 31-21 1
cable clamping bridge
19
SR3-M3,5x10 2
fillister screw
20-23 GH 1-18-1 1 cover
24 SR2-M3,5x15 2 cylindrical screw
25 SR6-M3,5x8 1 fillister countersunk screw
26
state ty pe
1
armature with winding,
and voltag e
commutator and fan
30 ZR 4-42 1
armature pinion
31
SR2-M3,5x6 3
cylindrical screw
32
PT 5d-M3,5 I 3
securing plate
33 LK 16-35 I 2
groove ball bearing
34 LA 6-156 1 intermediate bearing
35-61 LA 8-109-2 1
outer bearing, assembled
35
LA 8-109-1 1
outer bearing
37 LK
1-1 1
groove ball bearing
38 ZR16-12x0,75 1
countershaft pinion
39 ZR15-23x0,75 1
countershaft gear wheel
40
PT 8-159 1
driving plate
41
. ZR15-24x0,75 1
gear wheel
42 LA 6-157 1
bearing plate
44 LK 6a-11 1 needle bush
45 LK 1-32 1
groove ball bearing
I
6. Maintenance and Lubrication
This will depend on the duty . The following instructions are for
continuous use in 8-hour day with actual tool running time
representing 20 Ofo of total duty period.
Percussion mechanism and gearing should be completely cleaned
of old grease at least every 400 duty hours (approx. 8 weeks) .
For this purpose unscrew four screws (63 and 64), remove outer
bearing (35) and lift out percussion mechanism with bearing
plate (42). Then apply plenty of grease to the impact faces of
parts (57) and (56), as well as to ball pivots (49).
Quantity of grease in percussion mechanism approx. 15 g (1/ 2 oz)
grease FK 3.
Quantity of grease in gearing approx. 20 g (2/s oz) grease FK 3.
0
z
Order
.._,
Description
...
Reference
:><
ro
0
0..
46 DJ 12-4 1 ring
47
BF 1-4x14 1
cylindrical pin
48 A 10-9 1 drive block
49 A 11-7 2 ball pin
50
RJ 2-36 2 locking ring
51
RJ30-47x1,75 2 circlip Seeger
52 LK 8-3
10
ball
53 LK 10-25 1
compression ring
54 FD 1-188 1 pressure spring
55
WB 6-65 1
intermediate shaft
56 A 12-11 1
percussion piston
57-61 A 4-43-1 1
tool holder, assembled
57
A4-43 1 tool holder
58 BF 19-31 1 locking bolt
59 FD 1-74 1 pressure spring
60 BF 38-1,5x8 1
fixing bolt
61
BF 38-1x8 1 fixing bolt
62 SR2-M3,5x40 2
cylindrical screw
63 SR2-M3,5x58 2 cylindrical screw
64 SR2-M3,5x20 2 cylindrical screw
65 PT 5d-3,5 6
spring washer
66 RJ 12-47 1 sealing ring
'
Parts for low tension (42 Volts)
16
IEZ 6-126 I 1 I
cable
Accessories:
Iz 85-17 I
MZ60-2 / FK3
1 I hexagon socket tool
1 tube of grease
Accessories on demand
I GH 1-20-1
FD2-7
1 1 1 handle cover
I with su~pension bow
1 suspensiOn spnng
Further attachments see leaflet Zs
Rinse ball bearings in clean solvent and pack with fresh grease .
The space between inner and outer rings is to be one third filled
with grease in order to prevent overheating of the bearings.
For ball bearings, which should be lubricated after approx. 900
duty hours, we recommend our ball bearing grease FK 3.
If, after long duty, the impact dogs of percussion piston (56) and
tool holder (57) are worn they must be reground so that the
machine reaches its full tightening torque. Damaged percussion
mechanisms should be dismantled according to the instructions
of page 4. We recommend our Fein Service Stations to carry out
all repair work of this kind quickly and expertly.
Please, take care that all electric parts are only cleaned dry .

7. Dismantling
The machine should only be taken apart by an expert!
1. Uns(:rew fillister screw (25) and the two cylindrical screws
(24), tak e off handl e cover (20).
2. Loos en connection cable at switch and draw out switch.
Clamp off motor cable.
3. Unscrew screws (10), then take out carbon holders (5). Push
off reversing switch (4) backwards. Distribution of connections
see connecting plan.
4. Unscrew cylindrical screws (63) and (64) and take out outer
bearing with bearing plate (42). Draw off gear wheel (41) ,
remove bearing plate (42). Unscr ew cylindrical screws (62)
and tak e off intermediate bearing (34).
5.
Draw out armature (26) , unscrew 3 screws (31) and take off
armature pinion (30).
6. Draw insulation ring (14) out of motor housing (1), unscre w
cylindrical screws (13) and take out pole housing (12) . Please,
bear in mind that existing washers are to be placed in the
r ight places. Their lo ss may lead to dam age.
8. Assembly Instructions for Percussion Mechanism
(D esignat ion: Combined Drive Assembly)
The parts of the percussion mechanism are made of high-qualit y
steel, so that they do not wear considerably during normal duty.
Should disassembling prove necessary after a long period of
application it will be easily carried out.
Fi x the percussion mechanism at the drive assemb ly ver tic a ll y
in the vice. Th en the "Seeger" circl ip may be tak en out of the
drive assembly by means of a pair of stra ight pincers (Seeger-
Order-Reference J 2).
F
irst draw the in ter mediate shaft (55) o ut of the percussio n
m
ec hanism . By the spring t ension the percussion piston is kept
in its centric position. Press the percussion piston sidewards as
far as necessar y to remove the "Seeger " circlip with a pair of
normal pinc ers . Remove the percu ssion pisto n and the compres-
sion ring (53) upwards. Attention: The race in the drive
assembly must be filled with 10 balls (52) of
1/s"
r:j) (3 mm).
When re-assembling the percussion mecha nism, mak e sure that
the "Seeger" circlips fit completely in their grooves.
9. Repair and Spare Parts
We recommend our Fein Service Stations to carry out all
overhaul and r ep air work quickly and expertly.
Please, quote Order Reference when ordering spare parts or
send in sample part stating the type of the machine.
We draw yo ur attention to the need to ca rry out a high voltage
t es t in accordance with your loc al regulations ( or VDE regu-
la tion 0740) before taking a tool into serv ic e after an y repair
carried out by your own staff.
Diagram for the destination of favourable time of tightening action
Standard Screws High Tensile Screws
5
Example
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Hard Base
Elastic Base
Soft Base
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5
TO
T5
Time of tightening action [sec]
p. ex . screws and nuts with washers DIN 125
p. ex. spring
wash e rs , stay bolts, extensions
p. ex.
wood-, lead- or fibre-washers, packings
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