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Grammer MSG97GL Repair Manual

Seat suspension
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Repair manual GRAMMER seat suspension MSG97GL

TABLE OF CONTENTS

1.1
1.2
2.1
2.2
2.3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
October 2012
Page 1 of 1
Material no. 1 263 118

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Summary of Contents for Grammer MSG97GL

  • Page 1: Table Of Contents

    October 2012 Repair manual GRAMMER seat suspension MSG97GL Page 1 of 1 TABLE OF CONTENTS 3.10 Compressed-air hose – removal and installation 3.10.1 Compressed-air hose between compressor and air spring – removal and installation Preface 3.10.2 Compressed-air hose between air spring and additional air supply – removal...

  • Page 2: Preface

    INTERNET / INTRANET. (see repair manual for upper seat part). The seat suspension MSG97GL with holder on the left forms the basis for illustrations in this repair manual. In the case of technical deviations in work Basic information on the seat suspension procedures (due to different seat suspension designs), refer to the current text or individual chapters of the manual.
  • Page 3 Cables and air hoses may only be fastened with cable ties at the defined spots by As an inevitable matter of fact, GRAMMER AG cannot evaluate all situations and hand (loose). Make sure that cables and air hoses cannot be squeezed or distorted consequences that may bear a risk of injury for the persons involved in the when the seat suspension is adjusted and the seat moved.

  • Page 4: Description

    Repair manual GRAMMER seat suspension MSG97GL – October 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. 1 263 118...

  • Page 5: Safety Instructions

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Safety instructions Page 1 of 1 All inspection, test and repair work must be performed exclusively by adequately trained personnel. All work steps and procedures described are to be performed with consideration...

  • Page 6: Rating Plate

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Rating plate Page 1 of 1 The rating plate is located on the back of the top cover of the seat suspension. The rating plate shows the following information (example): (A) Country of manufacture = MADE IN...

  • Page 7: Diagnosis

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Diagnosis Page 1 of 1 TABLE OF CONTENTS Overview of components (pages 1-4) ● Pneumatic modules and connecting diagram (page 1) ● Compressor, compressor cable and pin assignment (page 2) ● Cable harness of seat suspension and pin assignment (pages 3-4) Overview of faults –...
  • Page 8 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of components Page 1 of 4 Pneumatic modules and connecting diagram Additional air supply ATTENTION Damage! Please observe the notes stated in Chapter 3.12 when pulling off the compressed-air hose (2 and 3) at the connection of the additional air supply (1).

  • Page 9: Overview Of Components

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of components Page 2 of 4 Compressor, compressor cable Electrical connection (black line) and pin assignment between right-angle plug (10) and compressor (8) Plug of cable harness for seat suspension...
  • Page 10 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of components Page 3 of 4 Cable harness for seat Pin assignment for seat occupancy suspension and pin assignment detection system at the cable harness plug for seat suspension (4)
  • Page 11 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of components Page 4 of 4 Electrical plug and socket connections: Electrical connection (blue cable) between right-angle plug (7) and compressor Electrical connection (black cable) between right-angle plug (8) and...

  • Page 12: Overview Of Faults - Pointing Out Possible Faults That Might Occur

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of faults – Pointing out possible faults that might occur Page 1 of 2 This chapter contains notes on possible faults of the seat suspension. These notes and the information provided in Chapter 2.3 "Troubleshooting" are intended to facilitate the elimination of faults.
  • Page 13 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Overview of faults – Pointing out possible faults that might occur Page 2 of 2 Fault description Possible cause Troubleshooting Height adjustment upwards: • Air system is leaky. Check pneumatic air system (Chapter 2.3, compressor runs, but seat suspension is not lifted inspection step no.

  • Page 14: Troubleshooting - Locating The Fault

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 1 of 7 Preconditions for fault diagnosis for each test: • The individual functions are activated in compliance with the instructions of the seat operating instructions.

  • Page 15: Suspension

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 2 of 7 Step Inspect/operate Result/specified status Troubleshooting • Disconnect the electrical connection (A and B) between the right-angle plugs (black and blue cables) and the compressor.
  • Page 16 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 3 of 7 2 Inspection of the micro-switch Preconditions for fault diagnosis: • Bellows at the upper suspension part removed (see Chapter 3.3). Step Inspect/operate...

  • Page 17: Harness Plug For Seat Suspension

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 4 of 7 3 Inspection of the cable harness for seat suspension Preconditions for fault diagnosis: • Upper seat part removed at the seat suspension.

  • Page 18: Suspension

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 5 of 7 Step Inspect/operate Result/specified status Troubleshooting • Bridge the pins P6 and P8 in the plug of the cable harness for the seat suspension (8-pin) (pin assignment for the heater).

  • Page 19: P1 P4

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 6 of 7 Step Inspect/operate Result/specified status Troubleshooting • Measure resistance between the pins P1 and P2 in the cable harness plug for the seat suspension (4-pin) and the pins P1...
  • Page 20 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Troubleshooting – Locating the fault Page 7 of 7 4 Inspection of the pneumatic air system Preconditions for fault diagnosis: • Bellows at the upper suspension part removed (see Chapter 3.4) and pressed down.

  • Page 21: Repair Work

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Repair work Page 1 of 1 TABLE OF CONTENTS Top cover – removal and installation Covers on the right and left side – removal and installation Bellows – removal and installation Vertical shock absorber –...

  • Page 22: Top Cover - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Top cover – removal and installation Page 1 of 1 Removal and installation Remove the upper seat part at the seat suspension (3) and put it aside. Notes: ● Cable ties at cable harness for upper...

  • Page 23: Covers On The Right And Left Side - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Covers on the right and left side – removal and installation Page 1 of 1 Removal and installation Remove the upper seat part at the seat suspension and put it aside.

  • Page 24: Bellows - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Bellows – removal and installation Page 1 of 1 Removal and installation Pull the bellows (1) in downward direction over the lower suspension Remove the seat suspension. part (10) and remove it.

  • Page 25: Vertical Shock Absorber - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Vertical shock absorber – removal and installation Page 1 of 1 Removal and installation Pull out the stud (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.

  • Page 26: Longitudinal Horizontal Shock Absorber - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 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 (3).

  • Page 27: Fore/Aft Isolator Unit - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Fore/aft isolator unit – removal and installation Page 1 of 2 Removal and installation If the longitudinal horizontal shock absorber is not defective: Remove the upper seat part at the seat Lever out the longitudinal horizontal suspension and put it aside.
  • Page 28 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Fore/aft isolator unit – removal and installation Page 2 of 2 Push the upper suspension part (1) forwards until the right (arrow) and left cut-outs in the guiding rail (2) are located at the same height as the front rollers.

  • Page 29: Locking Mechanism For Fore/Aft Isolator - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Locking mechanism for fore/aft isolator – removal and installation Page 1 of 2 Removal and installation Detach the tension spring (8) at the stop lever (7) and at the upper Remove the upper seat part at the seat suspension part (1).
  • Page 30 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Locking mechanism for fore/aft isolator – removal and installation Page 2 of 2 Undo the two collar screws (11) and remove the stop levers (7 and 12). Installation note: Apply acid-free multi-purpose...

  • Page 31: Compressor - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Compressor – removal and installation Page 1 of 2 Removal and installation Mark and remove two right-angle plugs (8). Installation notes: ATTENTION Hydrostatic test! • Reconnect the electrical connection according to the marking.
  • Page 32 Repair manual GRAMMER seat suspension MSG97GL – October 2012 Compressor – removal and installation Page 2 of 2 Pull off the hose nozzle (2) at the Pull off the nozzle (2) at the connection (10) of the compressor (1) compressed-air hose (3).

  • Page 33: Level Indicator - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 Level indicator – removal and installation Page 1 of 1 Removal and installation If the plastic roller (7) is defective: Release the plastic roller (7) in the Remove the seat. casing of the level indicator (1).

  • Page 34: Compressed-Air Hose - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.10 Compressed-air hose – removal and installation Page 1 of 1 TABLE OF CONTENTS 3.10.1 Compressed-air hose between compressor and air spring – removal and installation 3.10.2 Compressed-air hose between air spring and additional air supply – removal and installation 3.10.3 Compressed-air hose between additional air supply and valve for height...

  • Page 35: 3.10.1 Compressed-Air Hose Between Compressor And Air Spring - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.10.1 Compressed-air hose between compressor and air spring – removal and installation Page 1 of 1 Removal and installation Remove the compressed-air hose (2) from the compressor (1) (see Chapter 3.8).

  • Page 36: Compressed-Air Hose Between Air Spring And Additional Air Supply - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.10.2 Compressed-air hose between air spring and additional air supply – removal and Page 1 of 1 installation Removal and installation ATTENTION Do not damage the connection (arrow) at the additional air...

  • Page 37: Compressed-Air Hose Between Additional Air Supply And Valve For Height Adjustment - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.10.3 Compressed-air hose between additional air supply and valve for height adjustment – Page 1 of 1 removal and installation Removal and installation ATTENTION Do not damage the connection (arrow) at the additional air...

  • Page 38: Air Spring - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.11 Air spring – removal and installation Page 1 of 2 Removal and installation Pull the quick couplings (3) of the compressed-air hoses (4, 5) out of the air spring (1).
  • Page 39 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.11 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 40: Additional Air Supply - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.12 Additional air supply – removal and installation Page 1 of 2 Removal and installation WARNING Take care not to damage the connections (mandrel profiles) of the ATTENTION Hydrostatic test! additional air supply (2) and the compressed-air hoses (3, 4, 5).
  • Page 41 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.12 Additional air supply – removal and installation Page 2 of 2 Heat the residual pieces of the air hoses (4, 5) at the connection of the additional air supply (1) by means of a soldering iron and remove them.

  • Page 42: Holder For Height Adjustment - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.13 Holder for height adjustment – removal and installation Page 1 of 2 Removal and installation WARNING The pressure in the pneumatic system may cause injury! ATTENTION Hydrostatic test! The pneumatic system is to be vented...
  • Page 43 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.13 Holder for height adjustment – removal and installation Page 2 of 2 Cut off the compressed-air hose (7) with a sharp knife in a clean and straight way directly behind the...

  • Page 44: Cable Harness For Seat Suspension - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.14 Cable harness for seat suspension – removal and installation Page 1 of 1 Removal and installation Remove the corrugated pipe supports (1) and cable connector (2). Remove the upper seat part at the seat suspension.

  • Page 45: Upper Part Of Suspension - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.15 Upper part of suspension – removal and installation Page 1 of 2 Removal and installation Remove the level indicator from the upper suspension part (1) (see Chapter Notes: 3.9). • The locking mechanism for the fore/aft...
  • Page 46 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.15 Upper part of suspension – removal and installation Page 2 of 2 Push the upper suspension part (1) forwards (arrow A) until the cut-outs (arrows D) on the left and right sides...

  • Page 47: Lower Part Of Suspension - Removal And Installation

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.16 Lower part of suspension – removal and installation Page 1 of 2 Removal and installation Unscrew two hexagon nuts (10). Installation note: Remove the seat. Replace the hexagon nut (10) with a new one, 25 Nm.
  • Page 48 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.16 Lower part of suspension – removal and installation Page 2 of 2 Unscrew two collar screws (9) and remove the end stops (3) with the buffer (4) from the guiding rails (2).

  • Page 49: Worn Parts - Replacement

    Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.17 Worn parts – replacement Page 1 of 2 Removal and installation Remove the countersunk screw (10) (see Chapters 3.11 and 3.16). Perform preparatory work for the respective components (see Chapter Press the buffer (11) off the support for components).
  • Page 50 Repair manual GRAMMER seat suspension MSG97GL – October 2012 3.17 Worn parts – replacement Page 2 of 2 Remove cap screw, M8 x 12 (19) (see repair manual for upper seat part). Remove cap screw, M8 x 16 (20) (see repair manual for upper seat part).

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