Draw-Tite 8339 FOLD-DOWN GOOSENECK - Manual (Page 2)

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INSTRUCTION PART NO. N8339 1-15-07_C © 2002, 2007 CEQUENT TOWING PRODUCTS PRINTED IN U.S.A. PCN 9386
BALL ASSEMBLY PART BAG
INSTRUCTION SHEET
1. The following guidelines must be followed before installation begins:
- The hitch ball must be located along the truck’s fore/aft centerline.
- The hitch ball centerline must be located above and forward of the rear axle of the truck.
- Adequate clearance must be provided between the gooseneck trailer and the rear of the vehicle so that the gooseneck trailer does
not contact any part of the truck during turning.
- Adequate clearance must be provided between the forward corners of the gooseneck trailer and the cab of the truck.
- Determine that the ball position and under vehicle supports do not interfere with any vehicle crossmembers, brake lines, electrical
wiring, cables, fuel lines or vents.
2. With hitch ball center marked on the truck, lay template in the bed of the truck. Make sure that the template is oriented properly per
notes on the template. If truck is equipped with a bed liner a 14.5” x 12” section of the bed liner must be cut out so that the
gooseneck platform can contact the metal truck bed corrugations.
3. Center punch the holes that will be used to cut out the truck bed.
4. Drill 1/4” pilot holes (size will depend on the width of blade in saber saw).
5. Cut out truck bed. File the edges as needed.
6. Install platform into opening.
7. Use the installed platform as a guide to drill 5/8” diameter holes through the truck bed and/or under vehicle supports for the
carriage bolts and drill 3/4" diameter holes for U-bolts.
Before drilling, make sure the platform is oriented square to the truck centerline and does not interfere with
any vehicle crossmembers, brake lines, electrical wiring, cables, fuel lines or vents.
8. Before installing 5/8" carriage bolts through the platform, shims (not provided) must be placed between the platform and the bed
and between the under vehicle structure and the bottom of the bed. These shims are necessary to prevent the truck bed
corrugations from collapsing when the carriage bolts are tightened. See Fig. 2.
9. Install 5/8" x 2.50” Grade 5 carriage bolts through the platform, shims and under vehicle supports. Secure with lock washers and
nuts. Torque nuts to 150 LB-FT.
10. Install the (2) U-bolts through the platform. From under the truck install large flat washer over the U-bolt followed by a spring,
another large flat washer and secure with a thin 5/8” jam nut. Repeat for the other legs of the U-bolts. The 5/8” jam nuts are to be
tightened until 3 threads are visible past the bottom of the nut.
PARTS LIST: PART BAG CONTENTS
DESCRIPTION
QTY.
5/8-11 X 2.5 GRADE 5 CARRIAGE BOLTS 6
5/8-11 NUT 6
5/8 LOCKWASHER 6
5/8 U-BOLT ZINC PLATED 2
5” SPRING 4
5/8-18 LOCKNUT 4
9/16 FLAT WASHER 8
3/8 FLAT WASHER 1
24-9 X 1” TAP SCREW 1
INSTALLATION INSTRUCTIONS:
Note: GM composite (NON METAL) bed will require Installation Kit #58209
Fig. 2