gdw 1074 Instructions De Montage page 5

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Ref.
Fitting instructions
1)
Composition
All bolts and nuts : quality 8.8
Note
Please consult your cardealer or owners manual for the maximal permissable towing mass.
Remove any bitumen coating on the fastening position for the tow bar.
When drilling, be carefull not to damage any brake lines, electrical wiring or fuel lines.