•LOOSELY assemble the CHIN-UP SUPPORT (8) to the CROSS SUPPORTS (5) and the FRONT UPRIGHTS (3) using two 1/2 X 4-1/2” BOLTS (16), two 1/2 X 4-1/4” BOLTS (26), six 1/2” INT TOOTH LOCK WASHERS (20), two 1/2” PLASTIC DOME WASHERS (22) and four 1/2” LOCK NUTS (23) as shown in FIGURE 5.