B&W Trailer Hitches 1057R User Manual

B&W Trailer Hitches

1216 Hawaii Road / PO Box 186

[e-mail]

www.turnoverball.com

Humboldt, KS 66748

800.248.6564
Fax:[phone]

NOTE: We recommend reading instructions before beginning the installation.
WARNING: The tow vehicle’s towing capacities should under NO circumstances be exceeded.

Turnoverball

TM

Gooseneck Hitch Installation Instructions

Model 1057R

Call or Email us for Installation Support

Chevy-GMC (2007-2014)

1/2 Ton with Boxed Frame

***SHORT BED TRUCKS ONLY***

Mounting Kit Box (GNRM1057)

ITEM DESCRIPTION QTY

1 Driver Side Plate 1

2 Passenger Side plate 1

3 Front Crossmember 1

4 Rear Crossmember 1

5 Sideplate Clamp 1

Mounting Kit Bolt Bag

6 4-3/16" X 4-1/4 X 1/2" U-Bolt 1

7 1/2" Retainer 2

8 1/2" Frame Bushing 2

9 1/2” Locking Strap 2

1/2" X 2" Carriage Bolt 2

1/2” X 1-1/2” Cap Screw 11

1/2" Finish Nut 11

1/2” Lock Washer 17

1/2" Flat Washer 13

O-Ring 1

NOTICE: This product was designed to t vehicles in their original,
“as manufactured” condition. Compatibility with vehicles having
replacement parts, or other modications is not guaranteed.
Inspect vehicle for modications before installation of this product.

Center Box (GNRC959N)

ITEM DESCRIPTION QTY

10 Center Section 1

11 2-5/16” Ball 1

12 Latch Pin Handle 1

Safety Chain Kit Bolt Bag

13 1/2” U-Bolt 2

14 Conical Springs 4

15 1/2” Lock Nut 4

5/16” X 3/4” Carriage Bolt 1

5/16” X 3/4” Cap Screw 1

5/16” Lock Nut 1

BEFORE INSTALLING

OVERHEAD LIFTING DEVICE

An overhead-lifting device, such as chain falls, engine hoist, or cable come-a-long, can be used to lift the center sec-

tion of the hitch in place. Lower a loop of rope or chain through the 4” hole in the truck bed oor and attach it to the

latch pin in the round hitch receiver tube in the center section. Use the lifting device to raise the center section until
the round hitch receiver tube that protrudes from the center section ts in the 4” hole in the truck bed oor. Main­taining upward pressure may facilitate fastening the crossmember to the center section, especially if the truck bed

oor has been distorted downward from heavy use. If you use an overhead-lifting device, it should be disconnected

before squaring the center section across the frame, installing the sideplates and torquing fasteners.

WARNING

Most trucks have FUEL LINES and/or BRAKE LINES and/or ELECTRICAL WIRES located along the frame rails where
B&W Turnoverball™ hitches install. Carefully examine the location of fuel lines, brake lines and electrical wires BE­FORE INSTALLATION. Be certain you will not damage fuel lines, brake lines or electrical wires when positioning hitch
components, drilling holes and tightening fasteners. The fuel tank vent, located on top of the gas tank, can be easily
damaged during the installation of the hitch components. Care must be taken when positioning the front crossmem-

ber and center section components.

Warning

On Short bed trucks, BEFORE INSTALLING THIS HITCH, check for adequate turning clearance between the front of all

of your trailers and the truck cab.

Warning

DO NOT invert the ball in the socket when carrying heavy loads on 2 wheel drive trucks. The ball may hit the top of
the differential. Remove the ball from the socket before loading. A plug for the socket is available from B & W.

INSTALLATION INSTRUCTIONS

STEP ONE - REMOVE SPARE TIRE AND HEAT SHIELD

Removing the spare tire will ease in the installation of the hitch. Refer to the owner’s
manual for the spare tire removal instructions. A section of the exhaust heat shield
will need to be removed. Locate the bed crossmember that is directly over the axle

and the next one forward (toward the front of the truck). The section of heat shield
between these two crossmembers will have to be removed. This can be removed by
cutting along the crossmembers with tin snips or an air chisel. Make sure that none

of the heat shield is protruding past the front of the bed crossmember that is directly
over the axle this could interfere with the rear hitch crossmember.

STEP TWO - REMOVE EXHAUST HANGER

To ease in the installation of the center section remove the tail pipe hanger from the

rubber mount. Simply pry the pin on the hanger out of the rubber mount. Once this is done a spacer can be placed
between the frame and tail pipe to add clearance between the tail pipe and the bottom of the truck bed.

STEP THREE - MARKING AND CUTTING 4 INCH HOLE IN TRUCK BED

Begin by measuring for the correct hole location in the truck bed oor. Measure from the tail gate end of the truck bed
oor by hooking a tape measure over the end of the truck box and mark the oor at the correct measurement (See be­low). Next nd the center point between the wheel wells, where these marks intersect with the rst measurement will
be the center point of your four inch hole. This Location is critical to the correct installation of the B & W Turnoverball™
so measure, mark and saw carefully. Make a four inch hole at this location. B & W recommends using a four inch hole
saw, however the hole can be cut by other means. If your truck has a spray-in bed liner you will need to take into ac-

count when you are measuring to add the thickness of the applied liner that has been sprayed over the end of the bed.

If your truck has a drop-in plastic bed liner, you may saw through both, but it is more difcult to accurately locate the

midpoint between the fender wheel wells, and to be sure that the bed liner does not move when sawing the hole. Once
you have the four inch hole in the bed use a deburring tool or a die grinder and carefully remove the burr from the under
side of the bed around the hole.

TIP: B & W uses a 2”x
8”x 30” board with a 4”
hole pre-drilled in it as
a drilling guide to pre­vent the hole saw from
moving while sawing the
four inch hole in the bed.

FITS SHORT BED TRUCKS ONLY

Truck Location

Short Bed 44 1/8”

STEP FOUR - BED FLANGE MODIFICATION

The gap between the bed and frame is large enough to allow installation

of the crossmembers, but the gap is partially obstructed by a sheet metal

ange (about 1 inch in height) that is hanging down from the bottom of the
truck bed oor. (See diagram). A small notch needs to be made in this ange

on the Passenger’s side of the truck. Locate the truck bed cross member

over the axle in the wheel well on the passenger side of the truck. Measure
from the front of the cross member and make a mark at 6 ½”. This will be
the center point for the notch that is needed. Mark and cut a 1” wide by ½”

tall notch.

STEP FIVE - CROSSMEMBER INSTALLATION

Slide the angle iron cross member between the truck frame and the bed using the notch
that was made in step four. Be sure the holes in the cross member are facing the rear of
the truck. Once you start sliding the angle across the frame of the truck, we recommend
that you get under the truck and guide it across the frame rails taking care not to dam­age the brake lines along the driver side of the frame or fuel valve located on the back of

the fuel tank on some models. Once the crossmember is across the frame rails using the
rubber O-ring provided, secure a 1/2” 1-1/2” long bolt into the second hole in the cross
member from the drivers side. Next push the crossmember forward until the crossmember

is about four inches in front of the four inch hole in the truck
bed, making sure that the notch in the angle carefully goes

over the brake lines and wiring harness. Next install the cross

member bar between the truck frame and the bed. Start sliding
the bar across the frame then get under the truck to guide the

bar across the frame of the truck. Next rotate the bar a quarter
turn so the threaded holes are toward the bottom (an adjustable
wrench can aid in rotating the bar). Then slide the bar toward

the back of the truck until it is against the bed cross member.