Repair Manual MSG 90.6PG Commercial Vehicles, Omnibuses – November 2017
Material no. 1153450_c
2.4
Fault diagnosis
Page 5 of 16
TABLE OF CONTENTS
2 Inspection of the level control
Preconditions for fault diagnosis:
•
Compressed-air reservoir pressure at least 7 bar.
•
Seat cushion is lifted off in position for repair (Chapter 3.1).
•
The air hoses as well as the connections of the air hoses have been inspected with regard to kinks and tightness and found
to be OK.
•
Bowden pull wires, lever for seat height adjustment and button for quick lowering of the seat have been inspected and found
to be OK.
•
The air spring has been inspected with regard to tightness and found to be OK.
Notes:
•
Perform the inspection whit the seat being loaded (e.g. by pressing it down).
•
The components mentioned above are illustrated in Chapter 2.1, if not stated otherwise in this text.
Step
no.
Inspect/operate
Result/specified status
Troubleshooting
2.1
WARNING
Risk of crushing!
During inspection, do not touch the seat
suspension and the swinging structure with
your hands.
Gradually move up the seat until the highest
position (maximum height) is reached.
The seat moves up to the maximum
height (seat might oscillate about
40 mm upwards without hitting the
stopper).
The seat does not move up to the
maximum height.
Proceed with inspection
step no. 2.2.
Replace the level control
(Chapter 3.38).
