Every
year
Every
3rd year
Action Explanation
X
Open the chassis and replace the chassis seal-
ing strips.
Refer to
To replace the sealing strips on page
40
.
7.2 Screw fasteners
All screws are made from stainless material or rustproofed with zinc plating. Article numbers are found in the spare
parts list (IPL).
The tightening torque must be attained, otherwise there is not a satisfactory seal against moisture etc.
Fastener Hardware Tool Tightening
torque (Nm)
Upper to lower chassis Screw, 5 x 16 mm Torx 20 1.6
Top cover to body (430X/430XH/450X/
450XH/520/550/550H)
Screw gray, 4 x 14 mm Torx 20 1.3
Front bumper to body (430XH/450XH/
550H)
Screw, 5 x 16 mm Torx 20 1.8
Rear bumper to body Screw, 5 x 16 mm Torx 20 1.3
Rear bumper to body, 2 outer screws
(430XH/450XH/550H)
Screw, 5 x 16 mm Torx 20 1.8
Wheel brush holders (430XH/450XH/
550H)
Screw gray, 4 x 14 mm Torx 20 1.3
Center console to upper chassis, from in-
side
Screw gray, 4 x 14 mm Torx 20 1.2
Center console to upper chassis, from out-
side (430XH/450XH/550H)
Screw gray, 4 x 14 mm Torx 20 1.3
Holder charging strips Screw gray, 4 x 14 mm Torx 20 1.3
Buzzer Screw gray, 4 x 14 mm Torx 20 0.6
Joystick front to the upper chassis Screw, 5 x 16 mm Torx 20 3
Joystick rear to the upper chassis Screw, 5 x 16 mm Torx 20 1.2
Stud joystick Nut, M6 13 socket wrench 2.5
Joystick bracket Screw gray, 4 x 14 mm Torx 20 1.4
Housing and support for START/STOP
button (420/430X/440/430XH/450X/
450XH)
Screw gray, 4 x 14 mm Torx 20 1.2
Holders STOP button (520/550/500H) Screw gray, 4 x 14 mm Torx 20 1.2
Circuit board holder Screw gray, 4 x 14 mm Torx 20 0.8*/1.3**
Communication circuit board Screw gray, 4 x 14 mm Torx 20 1.0
Battery holder Screw, 5 x 16 mm Torx 20 1.5
Service plug Screw, 5 x 16 mm Torx 20 1.0
Wheel motor to lower chassis Screw, 5 x 16 mm Torx 20 1.6
Front wheel Screw gray, 4 x 14 mm Torx 20 1.2
Rear wheel Nut, M16 24 socket wrench 18
Rear wheel (520/550/500H) Screw gray, 4 x 14 mm Torx 20 1.2
Blade disc Screw, M4 x 8 mm Cross screwdriver 1.8
Blade disc bearing Screw, M6 x 8 mm Allen key 4 5.5
Blades Screw, M4 x 10 mm Flat/cross screwdriver 1.8
1191 - 001 - Service - 43
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