Volvo VNL 780 Operator's Manual page 415

MAINTENANCE AND LUBRICATION
If the vehicle is equipped with the optional rock/stone guard installed, the driver will have to
insert the lock pin into the tow hook from the opposite side during installation.
When the vehicle is located properly, lift the front and locate the lift bar under the front
axle and secure. Using the front axle for towing minimizes the possibility for damage
to the vehicle body, frame and suspension.
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