Mayr EAS-Compact-R User manual

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 1 of 9 Germany E-mail: [e-mail]
Please read these Operational Instructions carefully and follow them accordingly!
Ignoring these Instructions may lead to malfunctions or to clutch failure, resulting in damage to other parts.
Contents:
Page 1: - Contents
- Safety and Guideline Signs
- Safety Regulations
Page 2: - Clutch Illustration
- Parts List
Page 3: - Technical Data
Page 4: - Design
- State of Delivery
- Function
- Installation of the Output Elements
Page 5: - Mounting onto the Shaft
- De-installation
- Shaft Installation via Key Connection
- Cup Spring Layering
- Torque Adjustment
Page 6: - Torque Adjustment on Type 49A._ _5.0
Page 7: - Torque Adjustment on Type 49A._ _5.C
Page 8: - Limit Switch Installation
- Maintenance
- Disposal
Page 9: - Malfunctions / Breakdowns
Safety and Guideline Signs
CAUTION
Danger of injury to personnel and
damage to machines.
Please Observe!
Guidelines on important points.
According to German notation, decimal points
in this document are represented with a
comma (e.g. 0,5 instead of 0.5).
Safety Regulations
These Installation and Operational Instructions (I + O) are part of the clutch delivery.
Please keep them handy and near to the clutch at all times.
It is forbidden to start use of the product until you have ensured that all applicable EU directives and directives for the
machine or system into which the product has been installed have been fulfilled.
At the time these Installation and Operational Instructions go to print, the EAS®-clutches accord with the known technical
specifications and are operationally safe at the time of delivery.
Without a conformity evaluation, this product is not suitable for use in areas where there is a high danger of explosion.
This statement is based on the ATEX directive.
CAUTION  If the EAS®-clutches are modified.
 If the relevant standards for safety and / or installation conditions are ignored.
User-implemented Protective Measures
 Cover all moving parts to protect against seizure, dust or foreign body impact.
 The clutch may not be put into operation without a limit switch unless mayr ®has been contacted and has agreed
otherwise.
To prevent injury or damage, only professionals and specialists should work on the devices, following the
relevant standards and directives. Please read the Installation and Operational Instructions carefully before
installation and initial operation of the device.
These Safety Regulations are user hints only and may not be complete!

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 2 of 9 Germany E-mail: [e-mail]
Fig. 1: Type 49A.615.0 Fig. 2: Type 49A.625.0
Fig. 3: Type 49A.615.C Fig. 4: Type 49A.625.C
Parts List (Only use mayr ®original parts)
Item Name Item Name Item Name
1 Hub 9 Cup spring 17 O-ring
2 Pressure flange 10 Hexagon head screw 18 O-ring
3 Thrust washer 11 Hexagon head screw 19 O-ring
4 Locking ring 12 Limit switch 20 O-ring
5 Adjusting nut 13 Cone bushing 21 Cap screw
6 Deep groove ball bearing 14 Cap screw 22 Type tag
7 Locking ring 15 Gauge cover 23 Hub extension
8 Steel ball 16 Sealing ring
- The limit switch Item 12 is not included in the standard delivery.
- The hexagon head screw Item 10 must be secured using Loctite 243.
1
7
6
2
8
3
9
5
4
13
11
10
12
22
Stroke
1
7
6
2
8
3
9
5
4
10
12
22
Stroke
1
7
6
2
8
3
9
5
4
15
14
10
12
22
16
20
13
19
17
18
Stroke
1
7
6
2
8
3
9
5
4
15
21
10
12
22
16
20
23
19
17
18
Stroke

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 3 of 9 Germany E-mail: [e-mail]
Technical Data
Table 1:
Limit torques for overload MGHub bore (Item 1)
Size
Type
49A.5_5._
[Nm]
Type
49A.6_5._
[Nm]
Type 1)
49A.725._
[Nm]
Max.
speed
[rpm]
Thrust washer
stroke
on overload
(Item 3)
[mm]
Cone bushings
design
from - to
[mm]
Key
design
from - to
[mm]
0 10 – 25 20 – 50 40 – 100 3000 1,5 15 – 25 15 – 25
1 20 – 50 40 – 100 80 – 200 2500 1,8 22 – 35 22 – 30
2 40 – 100 80 – 200 160 – 400 2000 2,0 32 – 45 28 – 40
3 70 – 175 140 – 350 280 – 700 1200 2,2 35 – 55 32 – 50
1) Maximum torque range only for hubs with keyway.
Table 2:
Type 49A.5_5.0 Type 49A.6_5.0 Type 49A.725.0
Size
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 7)
at
approx. 70 % MG
[mm]
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 7)
at
approx. 70 % MG
[mm]
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 7)
at
approx. 70 % MG
[mm]
0 25 5,9 50 6,9 100 8,9
1 50 5,8 100 7,0 200 9,4
2 100 7,9 200 9,3 400 12,1
3 175 7,0 350 8,8 700 12,5
Table 3:
Type 49A.5_5.C Type 49A.6_5.C Type 49A.725.C
Size
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 10)
at
approx. 70 % MG
[mm]
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 10)
at
approx. 70 % MG
[mm]
Maximum
torque
MG
[Nm]
Inspection
dimension "a"
(Fig. 10)
at
approx. 70 % MG
[mm]
0 25 9,4 50 10,4 100 12,4
1 50 11,8 100 13,0 200 15,4
2 100 10,9 200 12,3 400 15,1
3 175 16,5 350 18,3 700 22,0
Table 4:
Connection dimensions
(Fig. 2, page 4) Max. permitted
Size
Thread in the
pressure flange
(Item 2)
Max. screw-in depth
in the pressure flange
(Item 2)
[mm] a +0,1
[mm] e 3) [mm] Axial forces [N] Radial forces [N]
Transverse
force torques2)
[Nm]
0 8 x M5 7 7 62 h5 1000 1000 10
1 8 x M6 9 9 75 h5 1500 1500 20
2 8 x M6 10 10 90 h5 2400 2400 30
3 8 x M8 12 10 100 h5 4200 4200 40
2) Torques, which put strain on the deep groove ball bearings due to the non-centric axial forces having an effect on the pressure flange.
3) User-side tolerance H7
Table 5:
Screw tightening torques [Nm]
Size Item 10
on Type 49A._ _ 5.0 Item 10 on Type 49A._ _ 5.C Item 11
Item 14 Item 21
0 2 2 2,7 2,9 2,9
1 1,9 4,1 2,7 2,9 2,9
2 3,3 3,3 5,4 5,8 5,8
3 3,3 3,3 9,5 10,1 10,1

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 4 of 9 Germany E-mail: [e-mail]
Design
The EAS®-Compact®clutch is designed as a mechanical
disengaging overload clutch according to the ball detent
principle.
EAS®-Compact®clutch in rustproof design:
 EAS®-Compact®-R clutch (Type 49A._ _5.0) completely
made of rustproof stainless steel. The cup springs have a
high-quality corrosion protection.
 EAS®-Compact®-RA clutch (Type 49A._ _5.C) completely
rustproof, enclosed in a rustproof cover.
State of Delivery
The clutch is manufacturer-assembled and set to the torque
stipulated in the order.
Unless the customer requests a particular torque setting, the
clutch will be pre-set and calibrated to approx. 70 % of the
maximum torque.
The hexagon head screw (10) is not secured with Loctite on a
calibrated clutch. Before initial operation of the clutch, please
secure the locking screw (10) with Loctite 243.
Please check state of delivery!
Function
The clutch protects the drive line from excessively high,
unpermitted torque impacts which can occur due to unintentional
blockages.
Function in Normal Operation
The EAS-Compactclutch transmits the torque from the input
shaft onto the output element, which can be mounted onto the
ball bearing supported pressure flange (2) of the clutch.
The torque is transmitted backlash-free over the entire service
lifetime of the clutch.
Function on Overload
If the set limit torque is exceeded (overload), the clutch
disengages, the thrust washer (3) carries out an axial stroke
movement, a customer-side mounted limit switch (12) recognizes
this stroke movement and emits a signal to switch off the drive.
The residual torque is approx. 5 to max. 15 % of the set torque.
Therefore, the EAS®-Compact®clutch is not load-holding.
Once the overload has been removed, the clutch is ready for
operation again after reaching an engagement position.
Re-engagement:
The ratchetting pitch of the EAS®-Compactsynchronous clutch
Type 49A._ _5._ is 360°
Installation of the Output Elements (Fig. 5)
The output elements are centred on the deep groove ball
bearing (6) (tolerance H7/h5) and screwed together with the
pressure flange (2).
Please observe the maximum screw-in depth in
the pressure flange (2) acc. Table 4, page 3.
Please observe the connection dimensions "a"
and "e" for the output elements acc. Fig. 5 and
Table 4, page 3.
If the resulting radial force from the output element is anywhere
near the centre of the ball bearing and under the max. permitted
radial load acc. Table 4, an additional bearing for the output
element is not necessary.
No appreciable axial forces (see Table 4) should be
transferred from the output element onto the clutch
pressure flange (2).
On very small diameters, the output element is screwed together
with the clutch pressure flange (2) via a customer-side
intermediate flange.
Ball bearings, needle bearings or bearing bushings are suitable
as bearings for the output element, depending on the installation
situation and the installation space.
Please make sure that the output element bearing is designed
as a location bearing (Fig. 5).
Fig. 5
2
1
6
13
3
11
12
a
e
T
a
p
p
e
d
e
x
t
r
a
c
t
i
n
g
h
o
l
e

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 5 of 9 Germany E-mail: [e-mail]
Mounting onto the Shaft
EAS®-Compact® clutches include manufacturer-installed cone
bushings or keyways as part of the standard delivery.
Please observe the following when mounting cone
bushings:
 Shaft tolerances
Up to diameter 38 h6 to k6
Over diameter 38 h8 to k6
 Shaft surface:
finely turned or ground (Ra = 0,8 µm)
 Shaft material: yield point at least 350 N/mm2,
e.g. St 60, St 70, C 45, C 60.
 Degrease or remove preservation layers on the shafts and
bores before installing the clutch or the clutch hubs.
Greasy or oily bores or shafts do not transmit the
torque TRspecified on order.
 Mount the clutch onto the shaft using a suitable device and
bring it into the correct axial position.
 The gauge cover (Item 15, Type 49A._ 15.C) must not be
turned as otherwise the calibration will be incorrect.
 Tighten the tensioning screws in steps (in 3 to max. 6
tightening sequences) and cross-wise evenly using a torque
wrench to the torque stated in Table 5.
The clutch carries out an axial movement in the
direction of the cone bushing (13) when
tightening the cone bushing (13).
De-installation on Type 49A._15._
In the cone bushing, tapped extracting holes are located next to
the tensioning screws (11 or 14).
1. Loosen all tensioning screws (11) by several thread turns.
On Type 49A._ 15.C: Screw out all tensioning screws (14)
and remove the gauge cover (15).
Please observe the position of the marking
grooves of the gauge cover (15) to the
adjusting nut (5), and keep to these positions
on re-installation.
2. Screw out the tensioning screws located next to the tapped
extracting holes and screw them into the tapped extracting
holes up to their limits.
3. Tighten the tensioning screws (11 or 14) evenly and in steps
so that the cone bushing (13) is loosened from the hub.
4. Screw the tensioning screws out of the tapped extracting
holes.
Shaft Installation via Key Connection
On the EAS®-Compact®with keyway, the clutch must be secured
axially after mounting onto the shaft, e.g. using a press cover
and a screw screwed into the shaft threaded centre hole and/or
a set screw.
The gauge cover (Item 15, Type 49A._ 25.C)
must not be turned as otherwise the calibration
will be incorrect.
Cup Spring Layering
Correct cup spring layering is a prerequisite for problem-free
clutch function and torque adjustment.
On all sizes, the lower torque range has one cup spring
(Type 49A.5_5._), the medium torque range has two cup springs
(Type 49A.6_5._) and the high torque range (not possible on
designs with cone bushing) has four cup springs (Type
49A.725._), see Fig. 6.
1x layered 2x layered 4x layered
Type 49A.515.0 Type 49A.615.0 Type 49A.725.0
Fig. 6
Torque Adjustment
In order to guarantee low-wear clutch operation, it is essential to
adjust the torque to a sufficiently high service factor (overload
torque to operating torque). Our experience has shown that an
adjustment factor of 1,3 to 3 gives good results. For very high
load changes, high accelerations and uneven operation, please
set the adjustment factor higher.
The respective torque adjustment range is printed onto the Type
tag (22). Torque adjustment is carried out by turning the
adjusting nut (5). The installed cup springs (9) are operated in
the negative range of the characteristic curve (see Fig. 9). This
means that tightening the adjusting nut (5) causes the spring
force to decrease, and loosening the adjusting nut (5) causes the
spring force to increase.
If no particular torque adjustment is requested customer-side,
the clutch will always be pre-set and marked (calibrated)
manufacturer-side to approximately 70 % of the maximum
torque.
Turning the adjusting nut (5) clockwise causes
a reduction in torque.
Turning it anti-clockwise causes an increase in
torque.
You should be facing the adjusting nut (5) as
shown in Fig. 8 and Fig. 11.
If no changes to the pre-set clutch torque are
required customer-side, the hexagon head
screws (10) must nevertheless screwed out,
painted with Loctite 243 and screwed back in
again by the customer.
It is possible to check the "Spring operation in the operating
range" (Fig. 9) using the dimension "a".
Please see Tables 2 and 3 for the respective values.
Type 49A._ _5.0:
Dimension "a" is the distance from the adjusting nut facing side
(5) to the thrust washer facing side (3), see Fig. 9, Table 2.
Type 49A._ _5.C:
Dimension "a" is the distance from the adjusting nut facing side
(5) to the sealing ring facing side (16), see Fig. 12, Table 3.

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 6 of 9 Germany E-mail: [e-mail]
Changing the Torque on
Type 49A._ _5.0
a) Please convert the required torque using the formula below
into percent of the maximum adjustment value
(see Table 2).
Required torque adjustment
Max. torque adjustment (Table 2) x 100 = adjustment
in %
b) Loosen the hexagon head screw (10) in the adjusting nut
(5).
c) Turn the adjusting nut (5) using the engraved adjustment
scale (Fig. 7) clockwise or anti-clockwise using a face
wrench until the required torque is reached.
d) The required torque results from the marking (D) overlap on
the locking ring (4) and the percent value (C) on the
adjusting nut (5), see Fig. 8.
e) Paint the hexagon head screw (10) with Loctite 243 and turn
it into the adjusting nut (5); the 4 notches (A) in the adjusting
nut (5) and the notches (B) in the locking ring (4) must be in
the same position (Fig. 8).
Slight corrections may be necessary.
Examples:
Example 1 - EAS®-Compact®Size 3, Type 49A.610.0:
Torque pre-adjustment = 70 % von MG max. = 245 Nm.
The adjustment should be increased from 245 Nm to 280 Nm.
Calculate the torque adjustment in % of MG max. using the formula
below:
%80100
Nm350Nm280 =×
Open the adjusting nut (5) using the facing-side graduation
(Fig. 8) anti-clockwise using a face wrench and adjust from
70 % to 80 %.
Example 2 - EAS®-Compact®Size 2, Type 49A.525.0:
The torque adjustment should be reduced from 75 Nm to 60 Nm.
Calculate the torque adjustment in % of MG max. :
%60100
Nm100Nm60 =×
Close the adjusting nut (5) using the facing-side graduation
(Fig. 8) clockwise using a face wrench and adjust from
70 % to 60 %.
Adjusting the adjusting nut (5) or distorting the
cup springs (9) out of the cup spring
characteristic curve (see Fig. 9) stops the clutch
functioning.
After de-installing the clutch (e.g. due to cup
spring replacement or changes to the cup spring layering), the
clutch must be re-adjusted and calibrated using dimension "a"
(see Table 2 and Fig. 7).
Fig. 7
Fig. 8
Fig. 9
a
3
5
95
C
10
B
A
D
4
Face
wrench
Path to
operating range
F
o
r
c
e
F
Graph of
spring characteristic
curve
Operating
range Spring path S

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 7 of 9 Germany E-mail: [e-mail]
Changing the Torque on
Type 49A._ _5.C
a) Please convert the required torque using the formula below
into percent of the maximum adjustment value
(see Table 3).
Required torque adjustment
Max. torque adjustment (Table 3) x 100 = adjustment
in %
b) Loosen the hexagon head screw (10) in the adjusting nut
(5).
c) Turn the adjusting nut (5) using the engraved adjustment
scale (Fig. 11) clockwise or anti-clockwise using a hook
wrench until the required torque is reached.
d) The required torque results from the marking (D) overlap on
the gauge cover (15) and the percent value (C) on the
adjusting nut (5), see Fig. 11.
e) Paint the hexagon head screw (10) with Loctite 243 and turn
it into the adjusting nut (5); the 4 notches (A) in the adjusting
nut (5) and the notches (B) in the gauge cover (15) must be
in the same position (Fig. 11).
Slight corrections may be necessary.
The gauge cover (15) must not be turned as
otherwise the calibration will be incorrect.
Examples:
Example 1 - EAS®-Compact®Size 3, Type 49A.610.C:
Torque pre-adjustment = 70 % of MG max. = 245 Nm.
The adjustment should be increased from 245 Nm to 280 Nm.
Calculate the torque adjustment in % of MG max. using the formula
below:
%80100
Nm350Nm280 =×
Open the adjusting nut (5) using the facing-side graduation
(Fig. 11) anti-clockwise using a hook wrench and adjust from
70 % to 80 %.
Example 2 - EAS®-Compact®Size 2, Type 49A.525.C:
The torque adjustment should be reduced from 70 Nm to 60 Nm.
Calculate the torque adjustment in % of MG max. :
%60100
Nm100Nm60 =×
Close the adjusting nut (5) using the facing-side graduation
(Fig. 11) clockwise using a hook wrench and adjust from
70 % to 60 %.
Adjusting the adjusting nut (5) or distorting the
cup springs (9) outside of the cup spring
characteristic curve (see Fig. 9) stops the clutch
functioning.
After de-installing the clutch (e.g. due to cup
spring replacement or changes to the cup spring layering), the
clutch must be re-adjusted and calibrated using dimension "a"
(see Table 3 and Fig. 10).
Fig. 10
Fig. 11
16 5
a
15
10
9
B
CA
9
15
5
10 D
Hook wrench

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 8 of 9 Germany E-mail: [e-mail]
Limit Switch Installation
The switching direction arrow on the mechanical limit switch
housing cover points in the direction of the adjusting nut (5) or in
the stroke direction of the thrust washer (3), Fig. 13.
Adjust the switch distances for the contactless and mechanical
limit switch acc. Fig. 12 or Fig. 13. The distance of the thrust
washer (3) to the switching point can be finely adjusted using a
hexagon head screw, wrench opening 7 (Figs. 12 and 13).
Fig. 12: Contactless Limit Switch
Fig. 13: Mechanical Limit Switch
Maintenance
The maintenance intervals refer to the set clutch torque, hub-
shaft connection and screw tightening torque inspections. The
specified tightening torques, see page 4, must be maintained.
Re-greasing work on the clutch may only be carried out by
specially-trained personnel and is only required in extreme
operating conditions such as very dusty or dirty conditions or at
very high operating speeds. In this case, the ball transmission
geometries must be re-greased.
The following maintenance and inspection intervals are to be
maintained:
1.) Visual inspections, installation parameter inspections
(tightening torques), clutch running behaviour, clutch
release, set torque and switch function of the sensor
before initial operation.
2.) Visual inspections, tightening torque inspections, clutch
release inspections, torque inspections and, if necessary,
re-greasing
after 2000 hours, after 100 overload occurrences or at
the latest every 6 months.
Disposal
Electronic Components (Limit switch):
Products which have not been disassembled can be disposed of
under Code No. 160214 (mixed materials) or components under
Code No. 160216, or can be disposed of by a certified disposal
firm.
All steel components:
Steel scrap (Code No. 160117)
Seals, O-rings, V-seals, elastomers:
Plastic (Code No. 160119)
0
,
5
3
SW7
1
,
5
0,5
switching
direction

Installation and Operational Instructions for
EAS®-Compact®-R, EAS®-Compact®-RA
rustproof synchronous clutch Type 49A. _ _5._ Sizes 0 – 3 (B.4.14.5.GB)
07/03/2011 TK/GH/GF/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 9 of 9 Germany E-mail: [e-mail]
Malfunctions / Breakdowns
Malfunction Possible Causes Solutions
Incorrect
torque adjustment
Adjustment nut has
changed position
Premature clutch release
Worn clutch
1) Set the system out of operation
2) Check the torque adjustment
3) Secure the adjusting nut
4) If the cause of malfunction cannot be found, the clutch must be
inspected at the place of manufacture
Incorrect
torque adjustment
Adjustment nut has
changed position
Clutch does not release
on overload
Worn clutch
1) Set the system out of operation
2) Check whether foreign bodies influence the function of the
disengagement mechanism
3) Check the torque adjustment
4) Secure the adjusting nut
5) If the cause of malfunction cannot be found, the clutch must be
inspected at the place of manufacture
Running noises in normal
operation Insufficient clutch
securement
1) Set the system out of operation
2) Check the clutch securement
3) Check the screw tightening torques
4) Check the torque adjustment and that the adjusting nut sits securely