Grammer MSG95EAC Repair Manual

Hide thumbs

Table of Contents

Quick Links

Repair manual GRAMMER seat suspension MSG95EAC

1.1

1.2

2.1

Overview of components

2.2

Overview of faults - Pointing out possible faults that might occur

2.3

Troubleshooting - Locating the fault

3 Repair work

3.1

Seat suspension - removal and installation

3.2

Top cover - removal and installation

3.3

Bellows - removal and installation

3.4

Vertical shock absorber - removal and installation

3.5

Locking mechanism for fore/aft isolator - removal and installation

3.6

Longitudinal horizontal shock absorber - removal and installation

3.7

Fore/aft isolator unit - removal and installation

3.8

Compressor - removal and installation

3.9

Sensor module - removal and installation

3.10

Air spring - removal and installation

3.11

Control / air reservoir - removal and installation

3.12

Cable harness for vehicle connection - removal and installation

3.13

Active module - removal and installation

3.14

Air distributor - removal and installation

3.15

Cable harness for energy bundle - removal and installation

3.16

Cable harness for seat suspension - removal and installation

November 2012

Page 1 of 1

Material no. 1 277 338

Table of Contents

Need help?

Do you have a question about the MSG95EAC and is the answer not in the manual?

Questions and answers

Summary of Contents for Grammer MSG95EAC

Page 1: Table Of Contents
November 2012 Repair manual GRAMMER seat suspension MSG95EAC Page 1 of 1 TABLE OF CONTENTS 3.13 Active module – removal and installation 3.14 Air distributor – removal and installation Preface 3.15 Cable harness for energy bundle – removal and installation 3.16...
Page 2: Preface
If not stated otherwise, the directional indications "front, back" and "right, left" refer to the installed seat suspension regarded in the driving direction of the vehicle. The seat suspension MSG95EAC forms the basis for illustrations in this repair manual. In the case of technical deviations in work procedures (due to different seat The document layout is suitable for later use of this repair manual via CD-ROM / suspension designs), refer to the current text or individual chapters of the manual.
Page 3 Bowden pull wires, cables and air hoses may only be fastened with cable ties at the As an inevitable matter of fact, GRAMMER AG cannot evaluate all situations and defined spots by hand (loose). Make sure that Bowden pull wires, cables and air...
Page 4: Description
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Description Page 1 of 1 TABLE OF CONTENTS Safety instructions Rating plate Note: Please refer to the applicable seat operating instructions for further details. Material no. 1 277 338...
Page 5: Safety Instructions
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Safety instructions Page 1 of 1 All inspection, test and repair work must be performed exclusively by adequately trained personnel. We point out explicitly that all work steps and procedures described are to be...
Page 6: Rating Plate
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Rating plate Page 1 of 1 The rating plate is located on the upper suspension part at the rear left. The rating plate shows the following information (example): (A) Country of manufacture = MADE IN...
Page 7: Diagnosis
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Diagnosis Page 1 of 1 TABLE OF CONTENTS Overview of components (pages 1-7) ● Pneumatic modules and connecting diagram (page 1) ● Sensor module with pin assignment (page 2) ● Control / air reservoir with pin assignment (page 3) ●...
Page 8: Overview Of Components
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 1 of 7 Pneumatic modules and Quick-release fastener screw connecting diagram WARNING Damage! Active module Observe the instructions stated in Control / air reservoir Chapter 3.9 and in Chapters 3.14 to 3.16 when pulling off the air hoses...
Page 9 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 2 of 7 Sensor module with pin Electrical plug and socket connections: assignment Electrical connection (3-pin) Sensor module between sensor module (1) and cable harness for seat suspension...
Page 10 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 3 of 7 Control / air reservoir with pin assignment Control / air reservoir Plug of control (18-pin) Socket of cable harness for seat suspension (18-pin) Cable harness for seat suspension...
Page 11 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 4 of 7 Active module and cable harness Electrical plug and socket connection: for the energy bundle with pin assignment Electrical connection (18-pin) between the control / air reservoir...
Page 12 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 5 of 7 Compressor, compressor cable with pin assignment Compressor Right-angle plug (blue cable) Right-angle plug (black cable) Cable harness for seat suspension Socket of cable harness for seat...
Page 13 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 6 of 7 Cable harness of seat Electrical plug and socket connections: suspension with pin assignment Electrical connection (3-pin) between sensor module and cable Cable harness for seat suspension...
Page 14 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of components Page 7 of 7 Electrical plug and socket connections: Electrical connection (6-pin) between cable harness for seat suspension (1) and cable harness for upper seat part Electrical connection (8-pin)
Page 15: Overview Of Faults - Pointing Out Possible Faults That Might Occur
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of faults – Pointing out possible faults that might occur Page 1 of 4 This chapter contains notes on possible faults of the seat suspension. The notes and information provided in Chapter 2.3 "Troubleshooting – Locating the fault" are intended to ease troubleshooting of faults.
Page 16 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of faults – Pointing out possible faults that might occur Page 2 of 4 Fault description Possible cause Troubleshooting Seat suspension responds after the height adjustment has been • Free running is not given due to the webbing in the Fix the webbing in the middle of the retractor (no operated, but then returns to its original position.
Page 17 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of faults – Pointing out possible faults that might occur Page 3 of 4 Fault description Possible cause Troubleshooting Seat suspension changes its position while driving, deflates and • Air spring and air distributor are leaky.
Page 18 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Overview of faults – Pointing out possible faults that might occur Page 4 of 4 Fault description Possible cause Troubleshooting Seat suspension pumps up and remains in the middle position, • Sensor module is leaky.
Page 19: Troubleshooting - Locating The Fault
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 1 of 15 Preconditions for fault diagnosis for each test: • The individual functions are activated in compliance with the instructions of the seat operating instructions.
Page 20: Inspection Of The Sensor Module
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 2 of 15 2 Inspection of the sensor module Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”. • Upper seat part removed at the seat suspension and put aside.
Page 21 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 3 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Measure the resistance at the contacts K11 and K8 in the socket of the cable harness of the seat suspension (STVB C): K11 (ground) K8 (sensor 8.5V)
Page 22 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 4 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Disconnect the electrical connection (A) between the sensor module and the cable harness for seat suspension.
Page 23 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 5 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Measure the resistance at the contacts K10 and K7 in the socket of the cable harness of the seat suspension (STVB C):...
Page 24 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 6 of 15 Step Inspect/operate Result/Specified status Troubleshooting 2.10 • Disconnect the electrical connection (B) between the sensor module and the cable harness for seat suspension.
Page 25 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 7 of 15 3 Checking the compressor Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”. • The air hose to the air distributor has been inspected with regard to kinks, scoring and tightness and found to be OK.
Page 26 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 8 of 15 4 Check the active module Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”. • The seat suspension is not disconnected (voltage that might cause a current flow must be applied to the seat suspension) and must be levelled.
Page 27 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 9 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Measure the resistance at the contacts K10 and K5 in the socket of the cable harness of the seat suspension (STVB C)::...
Page 28 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 10 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Disconnect the electrical connection (D) between the active module and the cable harness for the energy bundle.
Page 29: Inspection Of The Cable Harness For Seat Suspension
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 11 of 15 5 Inspection of the cable harness for seat suspension Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”.
Page 30 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 12 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Bridge the pins P6 and P7 in the plug of the cable harness for seat suspension (STCB J) (assignment for lumbar support).
Page 31 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 13 of 15 Step Inspect/operate Result/Specified status Troubleshooting • Bridge the pins P5 and P4 in the plug of the cable harness for seat suspension (STCB I) (assignment for height adjustment, UP signal).
Page 32: Inspection Of The Control / Air Reservoir
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 14 of 15 6 Inspection of the control / air reservoir Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”. • The air hose has been inspected with regard to kinks and tightness and found to be OK.
Page 33: Deactivation Of The Emergency Programme / Reset To Normal Operation
Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Troubleshooting – Locating the fault Page 15 of 15 7 Deactivation of the emergency programme / reset to normal operation Preconditions for fault diagnosis: • See “Preconditions for fault diagnosis for each test”.
Page 34 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Repair work Page 1 of 1 TABLE OF CONTENTS Seat suspension – removal and installation Top cover – removal and installation Bellows – removal and installation Vertical shock absorber – removal and installation Locking mechanism for fore/aft isolator –...
Page 35 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Seat suspension – removal and installation Page 1 of 1 Note: Mark the screw positioning diagram For the removal and installation of the seat and unscrew two hexagon socket suspension (1) at the vehicle, ask the...
Page 36 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Top cover – removal and installation Page 1 of 1 Removal and installation Remove the upper seat part at the seat suspension and put it aside (see Chapter 3.1). Notes: ● Cable ties at cable harness for upper...
Page 37 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Bellows – removal and installation Page 1 of 1 Removal and installation Pull the bellows (1) in downward Remove the seat (see Chapter 3.1). direction over the lower suspension part (8) and remove it.
Page 38 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Vertical shock absorber – removal and installation Page 1 of 1 Removal and installation Pull out the bolt (6) from the swinging structure (1) and the vertical shock Remove the upper seat part at the seat absorber (2) and remove two washers suspension (see Chapter 3.1).
Page 39 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Locking mechanism for fore/aft isolator – removal and installation Page 1 of 2 Removal and installation Mark the drill hole for the clamping sleeve (11) and drive out the clamping Remove the upper seat part at the seat sleeve (11).
Page 40 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Locking mechanism for fore/aft isolator – removal and installation Page 2 of 2 Detach the tension spring (5) from the upper part of the suspension (1) and the stop lever (4).
Page 41 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Longitudinal horizontal shock absorber – removal and installation Page 1 of 1 Removal and installation Lift off the longitudinal horizontal shock absorber (1) at the tube of the swinging Remove the upper seat part at the seat structure (2).
Page 42 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Fore/aft isolator unit – removal and installation Page 1 of 2 Removal and installation Longitudinal horizontal shock absorber is not defective: Remove the upper seat part at the seat Lever out the longitudinal horizontal...
Page 43 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Fore/aft isolator unit – removal and installation Page 2 of 2 Lift out the upper suspension part (1) over the front rollers and lay it to the back. Installation note: Apply acid-free multi-purpose...
Page 44 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Compressor – removal and installation Page 1 of 2 Removal and installation Mark and remove two right-angle plugs (8). Installation notes: ATTENTION Leak test! • Reconnect the electrical connection according to the marking.
Page 45 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Compressor – removal and installation Page 2 of 2 Pull off the hose nozzle (2) at the Pull off the hose nozzle (2) at the air connection (10) of the compressor (1) hose (3).
Page 46 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Sensor module – removal and installation Page 1 of 2 Removal and installation WARNING The pressure in the pneumatic system may cause injury! ATTENTION Leak test! Vent the pneumatic system before Hydraulic test of the seat suspension removing the sensor module (1).
Page 47 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 Sensor module – removal and installation Page 2 of 2 Air hose (7) with scoring: Cut off the air hose (7) with a sharp knife in a clean and straight way directly behind the scoring.
Page 48 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.10 Air spring – removal and installation Page 1 of 2 Removal and installation Pull the quick couplings (3) of the air hoses (4, 5) out of the air spring (1).
Page 49 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.10 Air spring – removal and installation Page 2 of 2 Press the air spring (1) down and pull out of the swinging structure (8). Remove the air spring (1) from the seat suspension.
Page 50 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.11 Control / air reservoir – removal and installation Page 1 of 2 Removal and installation WARNING The pressure in the pneumatic system may cause injury! ATTENTION Leak test! Vent the pneumatic system before The hydraulic test of the seat suspension removing the control / air reservoir (1).
Page 51 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.11 Control / air reservoir – removal and installation Page 2 of 2 Pull off the sealing ring (3) at the ATTENTION Damage! Take care control (1). not to damage the air hose (6).
Page 52 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.12 Cable harness for vehicle connection – removal and installation Page 1 of 1 Removal and installation Remove the seat (see Chapter 3.1). Remove the bellows at the upper suspension part (see Chapter 3.3) and press it down.
Page 53 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.13 Active module – removal and installation Page 1 of 2 Removal and installation Unscrew two rounded head screws (9). Installation note: Note: Rounded head screw (9), 0.4 Nm. For the removal and installation of the...
Page 54 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.13 Active module – removal and installation Page 2 of 2 Pull off the quick-release fastener screw (13) at the air hose (11). Installation notes: • Pull off the existing protective cap...
Page 55 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.14 Air distributor – removal and installation Page 1 of 2 Removal and installation Remove the air hoses (13 and 14) from the air spring (see Chapter 3.10). ATTENTION Leak test! Disconnect the electrical connection between socket (17) and plug (5).
Page 56 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.14 Air distributor – removal and installation Page 2 of 2 Pull off the quick-release fastener screws (9, 10, 16) at the air hoses (3, 6, 7). Installation notes: • Pull off the existing protective caps...
Page 57 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.15 Cable harness for energy bundle – removal and installation Page 1 of 1 Removal and installation Remove the air distributor (7) from the lower suspension part (2) (see Chapter 3.14).
Page 58 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.16 Cable harness for seat suspension – removal and installation Page 1 of 2 Removal and installation Disconnect two electrical connections (A and B) at the sensor module (5) and Remove the upper seat part at the seat remove two cable ties (see Chapter suspension (see Chapter 3.1).
Page 59 Repair manual GRAMMER seat suspension MSG95EAC – November 2012 3.16 Cable harness for seat suspension – removal and installation Page 2 of 2 Mark the points where the cable harness (1) is attached to the seat suspension. • 2 Corrugated pipe supports (10) •...

Grammer MSG95EAC Repair Manual

Quick Links

TABLE OF CONTENTS

Need help?

Questions and answers

Summary of Contents for Grammer MSG95EAC

Table of Contents