Volvo XC70 Owner's Manual page 179

05 During your journey
Driving with a trailer
7
Check that the towball section is secure
by pulling it up, down and back. If the
towball section is not fitted correctly then
it must be removed and refitted in
accordance with the previous instruc-
tions.
05
IMPORTANT
Only grease in the towball for the towing
hitch, the remainder of the towball section
should be clean and dry.
8
The trailer's safety cable must be secured
in the towing bracket's mounting eye.
178