Chevrolet lumina 2001 用户手册

You should always attach chains between your vehicle
and your trailer. Cross the safety chains under the tongue
of the trailer so that the tongue will not drop to the road
if it becomes separated from the hitch. Instructions
about safety chains may be provided by the hitch
manufacturer or by the trailer manufacturer. Follow the
manufacturer’s recommendation for attaching safety
chains and do not attach them to the bumper. Always
leave just enough slack so you can turn with your rig.
And, never allow safety chains to drag on the ground.

Does your trailer have its own brakes? Be sure to 
read and follow the instructions for the trailer brakes 
so you’ll be able to install, adjust and maintain 
them properly.
D If your vehicle has anti

-

lock brakes, do not try to tap

into your vehicle’s brake system. If you do, both
brake systems won’t work well, or at all.

D Even if your vehicle doesn’t have anti

-

lock brakes,

don’t tap into your vehicle’s brake system if the
trailer’s brake system will use more than 0.02 cubic
inch (0.3 cc) of fluid from your vehicle’s master
cylinder. If it does, both braking systems won’t work
well. You could even lose your brakes.

D Will the trailer brake parts take 3,000 psi 

(20 650 kPa) of pressure? If not, the trailer brake
system must not be used with your vehicle.

D If everything checks out this far, then make the brake

fluid tap at the upper rear master cylinder port. But
don’t use copper tubing for this. If you do, it will
bend and break off. Use steel brake tubing.