8.12.1.5 Reassembling the rim and the tyre on a vehicle with puncture-proof tyres...........134
8.12.2 Calibrating True Track® Plus motors .........................................................................136
8.12.3 Replacing the relais ....................................................................................................139
8.13 Rear wheel suspension.........................................................................................................141
8.13.1 Replacing the rear wheel suspension.........................................................................141
8.14 Replacing the strut................................................................................................................143
8.14.1 Removing the suspension strut ..................................................................................143
8.14.2 Replacing the rear compression spring (True Track® Plus motors) ..........................145
8.14.3 Replacing the front suspension strut (only Storm4X-plore)........................................147
8.15 Seat system............................................................................................................................149
8.15.1 Seat support and tilt module.......................................................................................149
8.15.1.1 Replacing the seat support with manual tilt module (till Dec. 2010)......................149
8.15.1.2 Replacing the seat frame with a manual tilt module (from Dec. 2010)..................150
8.15.1.3 Replacing the seat support with electric tilt module...............................................152
8.15.1.4 Replacing the tilt actuator ......................................................................................154
8.15.2 Seat column / lifter column .........................................................................................155
8.15.2.1 Replacing the seat column ....................................................................................155
8.15.2.2 Replacing a type A electrical lifter column.............................................................157
8.15.2.3 Replacing a type B electrical lifter column.............................................................159
8.16 Back unit.................................................................................................................................161
8.16.1 Replacing the standard back ......................................................................................161
8.16.2 Adjusting the belt back................................................................................................162
8.16.3 Replacing the EasyAdapt back...................................................................................163
8.16.4 Replacing / adjusting the universal backrest frame for the EasyAdapt backrest........164
8.17 Back unit with ergonomic length adjustment.....................................................................167
8.17.1 Adjusting the width......................................................................................................167
8.17.2 Replacing the planetary gear......................................................................................168
8.17.3 Replacing the servo motor..........................................................................................170
8.17.4 Replacing the microswitch..........................................................................................171
8.17.5 Fitting back plates to the base support of the back with ergonomic length adjustment172
8.17.6 Fitting the handlebar...................................................................................................173
8.17.7 Replacing the travelling armrest .................................................................................174
8.17.8 Replacing the arm support on the travelling armrest..................................................175
8.17.9 Retrofitting a travelling armrest...................................................................................176
8.18 Back Unit Modulite................................................................................................................177
8.18.1 Replacing the standard backrest................................................................................177
8.18.2 Replacing the backrest mounting bracket ..................................................................178
8.18.3 Replacing the backrest mounting bracket for SB 53 ..................................................179
8.18.4 Adjusting the backrest width.......................................................................................180
8.18.5 Replacing the backrest actuator.................................................................................182