Grammer AVENTO MSG 65/511 Operating instructions

November 2012
Material-No. 1 087 605_e
Repair manual GRAMMER Seats MSG 65/511-522 and boat seats AVENTO
Page 1 of 4
END
TABLE OF CONTENTS
Preliminary remarks
1 Description
1.1 Safety notes
1.2 Rating plate
2 Diagnosis
2.1 Overview of components
2.2 Functional test
2.3 Overview of faults
2.4 Fault diagnosis

November 2012
Material-No. 1 087 605_e
Repair manual GRAMMER Seats MSG 65/511-522 and boat seats AVENTO
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END
TABLE OF CONTENTS
3 Repair Work
3.1 Backrest cushion – removal, installation
3.1.1 Backrest cushion – removal, installation (MSG65/511-522 and boat seat AVENTO-Premium)
3.1.2 Backrest cushion – removal, installation (Boat seat AVENTO-Evolution)
3.2 Seat cushion – removal, installation
3.2.1 Seat cushion – removal, installation(MSG65/511-522 and boat seat AVENTO-Premium)
3.2.2 Seat cushion – removal, installation(Boat seat AVENTO-Evolution)
3.3 Backrest extension with guide – removal, installation (MSG65/511-522 and boat seat AVENTO-Premium)
3.4 Cover, right and left – removal, installation
3.5 Storage box – removal, installation (optional extras)
3.6 Armrests – removal, installation (optional extras)
3.7 Backrest frame with retaining spring – removal, installation
3.8 Bellows– removal, installation
3.9 Belt roller and belt buckle – removal, installation
3.10 Handle for weight adjustment – removal, installation
3.11 Handle for fore/aft adjustment – removal, installation
3.12 Handle for backrest adjustment – removal, installation

November 2012
Material-No. 1 087 605_e
Repair manual GRAMMER Seats MSG 65/511-522 and boat seats AVENTO
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TABLE OF CONTENTS
3.13 Backrest lock – removal, installation of the entire assembly
3.14 Knob for lumbar support – removal, installation
3.15 Seat level indicator – removal, installation of the entire assembly
3.16 Seat switch with cable and switch mechanism – removal, installation
3.17 Seat fore/aft adjustment – removal, installation of the entire assembly
3.18 Spring assembly – removal and installation
3.18.1 Spring assembly – removal and installation (seat plate)
3.18.2 Spring assembly – removal and installation (upper suspension part)
3.19 Shock absorber – removal, installation
3.20 Webbing – removal, installation
3.20.1 Webbing (static belt) – removal, installation
3.20.2 Webbing (secondary belt) – removal, installation (delivery option: construction machines)
3.21 Swinging structure with the lower part of the suspension – disassemble, assemble

November 2012
Material-No. 1 087 605_e
Repair manual GRAMMER Seats MSG 65/511-522 and boat seats AVENTO
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TABLE OF CONTENTS
3.22 Backrest bearing with retaining spring – removal and installation
3.22.1 Backrest bearing with retaining spring MSG65/511-522 and boat seat AVENTO-Premium – removal and installation
(see Chapter 3.7)
3.22.2 Backrest bearing with retaining spring boat seat AVENTO-Evolution – removal and installation (see Chapter 3.1.2)
3.23 Suspension cover – removal and installation (Boat seat AVENTO-Evolution)
3.24 Seat cushion and backrest cushion cover – removal and installation (Boat seat AVENTO-Evolution)

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
Preliminary remarks
Page 1 of 4
TABLE OF CONTENTS
Notes on these instructions
This repair manual includes information and instructions on how to perform repair work on the GRAMMER Seat MSG 65 of
the following seat models:
•Driver’s seat MSG 65/511 (slender seat cushion and short back),
•Driver’s seat MSG 65/521 (wide seat cushion and short back),
•Driver’s seat MSG 65/522 (wide seat cushion and long back).
•Boat seat AVENTO-Evolution
•Boat seat AVENTO-Premium
The driver’s seat of the MSG 65/521 type forms the basis for illustration. In the case of technical deviations in the work steps,
(due to different seat models) refer to the current text or separate chapters of the manual.
Each chapter starts with a list of all preparatory work to be completed before starting repair. These preparations are described
in separate chapters and shall be carried out without the preparatory steps described there.
At the beginning of each description for repair you will find an overview diagram. All parts included in these overview diagrams
within one chapter are consecutively numbered starting with "1". Each component is referred to by the same number through-
out the document.
With the help of these overview diagrams an experienced technician will gain a quick overview.
For spare part orders please use the numbers stated in the latest issue of the relevant spare parts catalogue.

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
Preliminary remarks
Page 2 of 4
TABLE OF CONTENTS
The description of the work steps refers to the dismounted seat. Depending on the individual installation situation, some work
may also be performed while the seat remains installed. For this reason, check the environment of the installed seat for this
possibility before starting work. The safety notes of the specific vehicle manufacturers and those stated in Chapter 1.1 of this
repair manual must be strictly observed.
This repair manual also includes some information on optional extras, in case further explanation is required. Since the scope
of delivery depends on the specific customer order, the actual seat equipment may deviate from the descriptions and illustra-
tions in this manual. These deviations may be described in separate assembly instructions included in the scope of delivery of
the respective spare parts.
If not stated otherwise, the directional indications "front, back" and "right, left" refer to the installed seat regarded in forward
travel direction of the vehicle.
The document layout is suitable for later use of this repair manual via CD-ROM / INTERNET / INTRANET. For this reason a
navigation line has been added beneath the title. This navigation line includes some chapter titles and it allows the user to
jump directly to these chapters after the corresponding hyperlinks have been set.
Basic information about the seat
After removal, all parts must be cleaned and checked for their suitability for re-use. Defective parts and worn parts must be
replaced.
The company Grammer rejects any warranty claims, if damaged or worn parts and assemblies are not replaced by spare
parts released by Grammer.

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
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Preliminary remarks
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TABLE OF CONTENTS
Qualified personnel
These installation instructions offer basic information on proper technical seat repair. The contents of the work procedures de-
scribed are intended for professionally educated technicians with profound product knowledge, gained through regular train-
ing. This level of knowledge is an imperative requirement when performing the work and procedures described in this docu-
ment.
In order to avoid bodily injury, reduced operational safety or damage to the seat resulting from improperly performed work, all
information and instructions, in particular the safety notes stated in Chapter 1.1, must be read carefully and strictly observed.
As an inevitable matter of fact, Grammer AG cannot evaluate all
situations and consequences that may bear a risk of injury for
the persons involved in the described work procedures. For this reason it is absolutely necessary that every person who car-
ries out repair work at a seat uses his/her professional knowledge to make sure that his/her own safety will not be put at risk
and that the selected type of repair will not cause any negative effects, in particular with regard to technical safety.
For this reason Grammer AG disclaims liability for any possible damage of this kind.
We point out explicitly, that all work steps and procedures described are to be performed with consideration to the applicable
directives and regulations stipulated by the relevant local authorities and in compliance with the provisions on health protec-
tion, prevention of accidents and environmental protection.

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
Preliminary remarks
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TABLE OF CONTENTS
Change Notification and Copyright
The seats are subject to continuous development. Please understand that we must reserve the right to make changes in
shape, equipment and technical design. For this reason, the contents of this repair manual cannot be used to substantiate any
possible claims.
Reprint, translation and copies of this manual or parts thereof are admissible only after written approval.
GRAMMER AG ⋅Postfach 14 54⋅D-92204 Amberg Delivery and factory address:
Phone [phone] / 66-6822 GRAMMER AG Sitzsysteme
www.grammer.com Köferinger Str. 9-13 ⋅D-92245 Kümmersbruck

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
1 Description
Page 1 of 1
TABLE OF CONTENTS
1.1 Safety notes
1.2 Rating plate
Note:
Please refer to the applicable seat operation manual for further details.

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
1.1 Safety notes
Page 1 of 1
TABLE OF CONTENTS
1 All inspection, test and repair work must be performed exclusively by adequately trained personnel.
2 All work steps and procedures described are to be performed with consideration to the applicable directives and regulations
stipulated by the relevant local authorities and in compliance with the provisions on health protection, prevention of acci-
dents and environmental protection.
3 Special notes in this repair manual are highlighted as follows:
WARNING ... indicates possible risks for persons and their prevention.
ATTENTION ... indicates possible damage or deterioration of material and their prevention.
Note: ... introduces an additional explanation for better understanding of the work to be carried out.
Installation note: ... introduces an additional explanation for better understanding of the installation work to be carried out.
4 Before starting repair work
•disconnect the battery from power supply,
•disconnect the seat switch from the vehicle supply network
•for seats with integrated seat heating, disconnect the heater switch from the vehicle supply network.
5 When using oil, grease and other chemical substances, the relevant safety regulations for the handling and use of these
materials must be observed.

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
1.2 Rating plate
Page 1 of 1
TABLE OF CONTENTS
The rating plate is located at the front
middle or left of the lower part of the sus-
pension system (delivery option: MSG65/
511-522 or boat seats AVENTO).
The rating plate shows the following in-
formation (example):
(A) BENENNUNG
(DENOMINATION) = MSG 65/521
(B) SACHNUMMER
(INVENTORY No.) = 141 206
(C) Year / KW / Assembly
= 0406 061
•Year of manufacture = 04 (2004)
•built in week = 06 (February)
•Assembly = 061
(D) AUFTRAGS NR.
(Order number) = DE 42844300080
Note:
The inventory No. is always to be quoted
when orders are placed.
MSG 65/521
.
.
A
B
C
D
141 206
0406 061
MeDok-828

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2 Diagnosis
Page 1 of 1
TABLE OF CONTENTS
2.1 Overview of components
•Controls and indicators
•Installation overview of the seat switch
•Seat switch and connector assignment with circuit diagram
2.2 Functional test
2.3 Overview of faults
2.4 Fault diagnosis
1 Inspection of the seat switch
* if fitted

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.1 Overview of components
Page 1 of 4
TABLE OF CONTENTS
Controls and indicators
(1) Handle for lumbar support
(2) Armrest
(3) Knob for armrest angle adjustment
(4) Belt roller
(5) Handle for backrest adjustment
Note:
MSG 65/511 seat type (slender seat
cushion) and boat seat AVENTO-
Evolution is equipped with a loop for
backrest adjustment.
(6) Handle for weight adjustment
(7) Seat level indicator
(8) Handle for fore/aft adjustment *
(9) Seat belt buckle *
* if fitted
1
9
4
5
6
7
8
2
2
3
3
MeDok-829

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
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2.1 Overview of components
Page 2 of 4
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Installation overview Seat switch
(1) Spring pack
(2) Vehicle power connector
(3) Cable ties with anchor ties
(4) Blind rivet
(5) Compression springs
(6) Bushing
(7) Switching bracket
(8) Housing of seat level indicator
(9) Cable ties
(10) Switch plate
(11) Cover
(12) Blind rivet
(13) Seat switch
(14) Cable harness of the seat switch
(15) Connector plug of the seat heater
(if fitted)
(16) Connector plug of the belt buckle
switch (if fitted)
8
1
9
7654
2
10
12
6
5
499
13
3
3
9
11
MeDok-830
13
14
15
16

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.1 Overview of components
Page 3 of 4
TABLE OF CONTENTS
Seat switch and connector assign-
ment with circuit diagram
(1) Seat switch actuator
(2) Switch/Seat occupation detection
system
(3) Vehicle power connector
(depending on model)
(4) Connector plug of the seat heater
(if fitted)
(5) Cable harness of the seat switch
(6) Connector plug of the switch/control
(if fitted)
(7) Connector plug of the belt buckle
switch (if fitted)
(8) Assignment as make contact
(contacts: K1 and K3)
(9) Assignment as break contact
(contacts: K1 and K2)
(10) Assignment for heater and control
(if fitted)
(11) Assignment for belt buckle switch
(if fitted)
Z
A
K3
K2
O
K1
K4
K5
3
6
2
5
7
1
MeDok-894
K1
K5
K4 K2
K3
10
8
3
9
K6
11
K1
K2
K3
K5
K4
3
8
9
10
K6
4
K1 K3
83

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.1 Overview of components
Page 4 of 4
TABLE OF CONTENTS
Note:
Distance (A) between idle position
and switching point of the push-rod
switch (1) = 1.2 mm.
Example of seat switch (2) switched as
make contact (8):
(O) If no load is applied to the seat, the
seat switch (2) is open.
The vehicle cannot be driven or is
switched off.
(Z) If a load is applied to the seat, the
seat switch (2) is closed.
The vehicle can be driven.
Z
A
K3
K2
O
K1
K4
K5
3
6
2
5
7
1
MeDok-894
K1
K5
K4 K2
K3
10
8
3
9
K6
11
K1
K2
K3
K5
K4
3
8
9
10
K6
4
K1 K3
83

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.2 Functional test
Page 1 of 5
TABLE OF CONTENTS
A functional test is used to circumscribe all possible malfunctions; it must be performed before and after repair work on the
seat at any rate.
Preconditions for testing:
• The individual functions are activated in compliance with the instructions of the seat operating manual.
• The electrical system of the vehicle has been inspected and found OK in compliance with the operating instructions.
Note: The components stated above are illustrated in Chapter 2.1.
Step
no. Scope of inspection
Function to be operated Result/specified state Notes, cause/remedial
measures
1 Weight adjustment
and seat level indica-
tor
Pull the handle for weight adjust-
ment downwards or upwards (while
there is load on the driver’s seat)
until it hits its end stop and then let it
go off.
The pointer of the seat lev-
el indicator moves to the
right or left, respectively.
See overview of faults
(Chap. 2.3).
2 Suspension Apply your body weight to the seat
and adjust it to your individual
weight. The pointer of the seat level
indicator must be in the middle of
the viewing window.
The suspension is within
its maximum swinging
range.
The loaded seat can spring
without hitting the end stop
within the range of 60 mm.
See overview of faults
(Chap. 2.3).

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.2 Functional test
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TABLE OF CONTENTS
Step
no. Scope of inspection
Function to be operated Result/specified state Notes, cause/remedial
measures
3 Suspension Apply load to the seat and spring up
and down several times.
No noise.
High lateral stability in hor-
izontal direction.
See overview of faults
(Chap. 2.3).
4 Backrest angle Pull the handle for backrest adjust-
ment upwards.
The backrest folds for-
wards.
See overview of faults
(Chap. 2.3).
5 Pull the handle for backrest adjust-
ment upwards while loading and un-
loading the backrest, and then re-
lease the handle.
The backrest locks into
place in the desired posi-
tion.
It should not be possible to
move the backrest to an-
other position after it has
been locked into place.
Adjustment angle of the
backrest in 15 increments
of 2.5°each.
See overview of faults
(Chap. 2.3).
6 Seat fore/aft adjust-
ment
Pull the handle for seat fore/aft ad-
justment upwards.
The seat moves forwards
or backwards.
The maximum adjustment
distance of 225 mm in lock-
in positions of 15 mm each.
See overview of faults
(Chap. 2.3).

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.2 Functional test
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TABLE OF CONTENTS
Step
no. Scope of inspection
Function to be operated Result/specified state Notes, cause/remedial
measures
7 Seat fore/aft adjust-
ment
Release the handle for fore/aft ad-
justment.
The seat locks into place in
the selected position. It
should not be possible to
move the seat to another
position after it has been
locked into place.
See overview of faults
(Chap. 2.3).
8 Lumbar support Turn the knob for lumbar support up
or down.
The backrest cushion
arches outward at the bot-
tom or top.
See overview of faults
(Chap. 2.3).
9 Seat switch Load and unload the seat cushion in
the front left and right sides several
times.
The seat switch contacts
(audible switching sound).
Switching function:
•loaded = on
•unloaded = off
(for shutting down me-
chanical equipment when
the driver leaves his/her
seat)
See overview of faults
(Chap. 2.3).

Repair manual MSG 65/511-522 and boat seat AVENTO – November 2012
Material-No. 1 087 605_e
2.2 Functional test
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TABLE OF CONTENTS
Step
no. Scope of inspection
Function to be operated Result/specified state Notes, cause/remedial
measures
10 Belt roller Pull the safety belt out and let it go
back.
The safety belt automati-
cally retracts.
See overview of faults
(Chap. 2.3).
11 Seat belt buckle
Seat belt buckle
switch
Insert the belt latch (safety belt) into
the belt buckle.
Insert the belt latch (safety belt) into
the belt buckle.
The belt buckle audibly
clicks into place and can-
not be easily withdrawn
even by pulling it vigor-
ously.
Seat belt buckle switch
contacts
Switching function:
•Insert the latch into the
belt buckle = on
•Take the latch out of the
belt buckle = off
See overview of faults
(Chap. 2.3).
See overview of faults
(Chap. 2.3).
12 Press the red release button of the
belt buckle.
The belt buckle releases
and the belt latch can be
opened.
See overview of faults
(Chap. 2.3).
13 Armrest Turn the knob of the armrests in-
wards or outwards, respectively.
The armrests are lifted or
lowered in the front.
See overview of faults
(Chap. 2.3).