7
7.12 Anti-tipping mechanism..........................................................................................................81
7.12.1 Replacing the anti-tipping mechanism with screw........................................................81
7.12.2 Replacing the anti-tipping mechanism with locking spring...........................................82
7.12.3 Replacing a defective locking spring ............................................................................83
7.13 Replacing the steering head bearings on the steering wheels ..........................................84
7.14 Repairing punctures................................................................................................................87
7.14.1 Repairing the rear tyre (wheel size 3.00-8").................................................................87
7.14.2 Repairing a flat tyre (wheel size 280/250-4).................................................................89
7.15 Replacing a drive wheel..........................................................................................................91
7.16 Replacing the splash guard....................................................................................................93
7.17 Seat system..............................................................................................................................95
7.17.1 Checking an adjusting motor........................................................................................95
7.17.2 Replacing the seat tilting (wheelchair without lifter) .....................................................96
7.17.3 Replacing the lifter........................................................................................................98
7.18 Backrest unit..........................................................................................................................100
7.18.1 Replacing the standard backrest................................................................................100
7.18.2 Adjusting backrest former...........................................................................................101
7.19 Seat system Modulite............................................................................................................102
7.19.1 Replacing the tilt actuator...........................................................................................102
7.19.2 Replacing the lifter actuator........................................................................................103
7.19.3 Replacing the lifter / seat angle adjustment module...................................................104
7.19.4 Replacing the angle sensor........................................................................................107
7.19.5 Replacing the backrest actuator.................................................................................108
7.19.6 Backrest actuator - Removing the adapter.................................................................109
7.20 Backrest Modulite..................................................................................................................110
7.20.1 Replacing the standard backrest................................................................................110
7.20.2 Replacing the backrest mounting bracket ..................................................................111
7.20.3 Replacing the backrest mounting bracket for SB 53 ..................................................112
7.21 Adjusting the seat width/ backrest width (Modulite) .........................................................113
7.21.1 Adjusting the seat width..............................................................................................113
7.21.2 Adjusting the backrest width.......................................................................................115
7.21.3 Adjusting the Flex3 backrest.......................................................................................117
8Installing accessories 118
8.1 Replacing the holding strap.................................................................................................118
8.1.1 Standard seat & Flex2 ................................................................................................118
8.1.2 Fixed seat unit ............................................................................................................119
8.2 Replacing seat belts (Modulite seat) ...................................................................................120
8.2.1 Installation on the backrest mounting bracket (simple backrest)................................120
8.2.2 Installation on the backrest mounting bracket (adjustable seat) ................................121