Demco 8553015 User manual

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FRAME BRACKET
BOLT TORQUE SPECIFICATIONS
STANDARD BOLTS
Size Grade Torque
5/16” 5 18 ft/lbs.
3/8” 5 30 ft/lbs.
7/16” 5 50 ft/lbs.
1/2” 5 75 ft/lbs.
Size Grade Torque
8mm 8.8 23 ft/lbs.
10mm 8.8 45 ft/lbs.
12mm 8.8 78 ft/lbs.
14mm 8.8 125 ft/lbs.
METRIC BOLTS
5/8”
5 150 ft/lbs.
53/4” 290 ft/lbs.
10/17
HJ33015,Rev 4
Ford F150
5 1/2’, 6 1/2’ * 8’ Boxes
1
2
3
4
8553015 PARTS LIST
ITEM PART # QTY DESCRIPTION
110379 6 .50 SERRATED FLANGE NUT
214266 6 .50 NC X 1.75 HEX BOLT SERRATED NECK GR.5
314365-76 1 DRIVER SIDE FRAME BRACKET
414366-76 1 PASSENGER SIDE FRAME BRACKET
514238 1 .50 FISH WIRE (NOT SHOWN)
615367 13’ VINYL 5” (NOT SHOWN)
Please order replacement parts by PART NO. and DESCRIPTION

INSTALLATION
1. a. Completely assemble hitch. See GENERAL INSTRUCTIONS and SAFETY supplied. Apply vinyl to bottom
of rails & shims.
b. Set hitch into back of truck, center it side to side.
c. Measure 20” from back edge of truck box to back edge of bed rail.
2. Check underneath box at bolt hole locations for any obstructions (frame members, etc.).
3. a. Drill two 17/32” holes thru HOLE #2, each bed rail.
b. Insert two 1/2” x 3” (04073) long hex bolts.
c. Drill thru HOLES #3 and #6, each bed rail. Insert four 1/2” x 3” hex bolts (04073).
4. a. Under box, place (15365-76 & 15366-76) frame brackets onto hex bolts (six places). Apply vinyl to top of
brackets where they touch the box. NOTE: Frame welds may need to be ground for a tight flush fit to the
frame. Paint ground area and let cure, then proceed.
b. Loosely install frame washer (14235-95), 1/2” flat washer (00085), and 1/2” Nylon lock nut (02178).
c. Press each bracket tight against frame member, tighten nuts snug against box.
5. a. Pilot drill* and drill 1/2” hole into truck frame (one wall), at three places thru holes in each frame bracket
-- BE CAREFUL OF ELECTRIC OR FLUID LINES behind frame members.
b. Fasten brackets with 1/2” x 1 3/4” (14266) knurl bolts using fish wire through holes on inside of frame and
serrated nuts (10379).
c. TIGHTEN ALL BOLTS ACCORDING TO CHART ON FRONT PAGE.
* To pilot drill: Use 1/2” drill bit or transfer punch to mark center. Drill thru with 1/4” drill.
CAUTION: Do not install base rails over
plastic bed liners. Plastic bed liners must
be cut out of the way. Rails may be in-
stalled on spray in liners.
NOTE: Consult spray liner installer for rec-
ommended curing time.
NOTE: All metal surfaces that come in con-
tact the aluminum body need to have vinyl
placed in between to prevent corrosion.
4010 320th St., BOYDEN, IA. 51234
PH: [phone]
FAX: [phone]
TOLL FREE: 1-800-54DEMCO (1-800-543-3626)
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