Installation Procedures

  1. Unroll the plastic liner, typically putting the natural curve of the plastic down. Give the liner time to flatten out or blow heat under plastic to flatten it out. When liner is flat transfer doghouse measurements to the plastic and using a circular saw or a jig saw cut this area out. If installing an HTG Asphalt dump truck liner, make sure the steel tail kit is at the rear of the truck with the steel facing down.
  2. Cut dump truck liner to desired length. The formula for determining how much to cut off is as follows; .0013 x length of bed in feet x degree of temperature change.
  3. Example: An 18’ liner installed at 65 degrees Fahrenheit, with a maximum operating temperature of 120 degrees Fahrenheit will see approximately 1.25” of expansion. (.0013 x 55 degrees x 18’ body =1.287)

  4. When installing asphalt dump truck liners a different formula is used. Cut 1.5 inches of plastic off for every 10’ of body length.

    Example: An 18’ Avalanche HTG Asphalt dump truck liner would need to be cut 2.75 inches short of the tailgate to allow for expansion.

  5. Mark center on both the front and the rear of the dump truck liner. Do the same on the front and the rear of the dump truck body you are installing the liner into. These aides in keeping the liner square when forcing it into the corners of the body.
  6. Make sure the score marks (if applicable) are facing up or touching the load.
  7. Using C-clamp vise grips and come-a-longs ratchet the dump truck liner into the shape of a U.
  8. Lift the dump truck liner into the body.
  9. Center liner front and back with the marks that you have put on the plastic and the body itself.
  10. Put an elevator bolt or self tapping screw on each side of the doghouse to keep the dump truck liner from shifting. Put these fasteners in a place where they can be left in and not removed.
  11. Remove come-a-longs and vise grips from the plastic.
  12. Using multiple cargo jacks or a port-a-power force the dump truck liner tight into the radius below. Make sure the liner is level from front to back along the sidewall.
  13. Fasten cover-strips to side of body with desired hardware. Make sure there is at least 1” of play for the liner to grow underneath the cover-strip. On asphalt liners Global Plastics Inc. recommends 1.5” expansion allowance under cover-strips.
  14. Bolts, rivets or screws need to be put on 6” increments around the entire front of the body to keep material front getting under the liner. Hardware needs to be 3” back from the edge of plastic to avoid tearing through the liner on sticky loads. Flashing may be welded around front cutting down on the amount of fasteners needed to be put in.
  15. make sure all fasteners are tight. Place a bead of silicone around the front of the liner and across the top of the cover-strips.
  16. Remove all cargo jacks or come-a –longs that hold liner in place.
  17. Let caulking set for 2-3 hours to seal the dump truck liner and keep out debris.
  18. Put the dump truck liner to work and enjoy the benefits of your new Avalanche liner.