The Floor Chain
Tie-down shall be located near a trailer cross member.
Measure 2 3/4” from the web of
the trailer cross member to establish the centerline for
the hole in the trailer deck (see Figure 1).
Drill a 1/4” diameter
pilot hole from the underside and up through the trailer
deck. From the top side use the 1/4” pilot hole to bore a
2 1/2” diameter hole through the deck.
Insert the Floor Chain Tie-down
into the hole in the wooden deck from the underside. The
top of the floor chain tie-down should be flush with the
top surface of the deck. The bar must be squarely located
against the cross member (see Figure 2 and Figure
bar of the Floor Chain Tie-down to the cross-member. Weld
along both sides of bar (see Figure 4).
Do not weld chain link, it must be free to move.
NOTE: Minimum weld requirements are 1/4”
fillet welds with 1/8” penetration. All welding to be in
accordance with A.W.S. standards.
Clean, prime and
paint the weld and weld area to resist rusting.
Figure 2 - Side View
Figure 3 - Front View
Figure 4 - Front View
the lid of the Floor Chain Tie-down and
retract the chain.
Seat the tie-down
assembly hook between two
adjacent links of the Floor Chain Tie-down (see Figure 5).
Do not place the tie-down assembly hook next to the lid
of the floor chain tie-down.
Inspection and Maintenance
Prior to each
use, inspect for and replace any worn or damaged components.
Cracks in the weld area of
the attachment point to the trailer cross member may be ground
and rewelded as required per installation instructions.