J&M Roll Tarp GRAVITY BOX (Since 2011) User Manual

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STEP 1 - HANGER

1.1 Mark two holes using the Hanger Bracket as a template and drill with a 3/8” drill bit. These holes

should be centered on the back vertical face of the gravity box as low as possible.

1.2 Fasten the Hanger Bracket to the gravity box using two 3/8” x 1” serrated flange bolts and two 3/8” ser-

rated flange nuts.

1.3 Fasten the Hanger Hook to the Hanger Bracket as shown above with a 1/2” x 1 1/4” bolt and a 1/2”

locknut. This should not be tightened all the way. The Hanger Hook needs to be able to swivel on the

Hanger Bracket.