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Turnoverball

Gooseneck Hitch Installation Instructions

Model 1057R

B&W Trailer Hitches

1216 Hawaii Road / PO Box 186

Humboldt, KS 66748

800.248.6564

Fax:620.473.3766

Chevy-GMC (2007-2014)

1/2 Ton with Boxed Frame

***SHORT BED TRUCKS ONLY***

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. Main-

taining 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 BE-

FORE 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.

NOTE: We recommend reading instructions before beginning the installation.

WARNING: The tow vehicle’s towing capacities should under NO circumstances be exceeded.

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

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

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.

Summary of content (4 pages)

PAGE 1
B&W Trailer Hitches 1216 Hawaii Road / PO Box 186 Humboldt, KS 66748 800.248.6564 Fax:620.473.3766 hitches@turnoverball.com www.turnoverball.com NOTE: We recommend reading instructions before beginning the installation. WARNING: The tow vehicle’s towing capacities should under NO circumstances be exceeded.
PAGE 2
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.
PAGE 3
APPLICATION UPDATE: Beginning in 2004, a fuel valve mounted on the rear of the fuel tank on trucks equipped with gas engines, makes it more difficult to install the Turnoverball™ center section. This fuel valve can be easily removed and replaced to ease installation. Please follow the following instructions: Step 1: Locate the fuel valve. Step 2: Disengage the locking pin. Step 3: Slide fuel valve from bracket. Step 4: Install Turnoverball™ Center Section.
PAGE 4
STEP EIGHT - INSTALL SIDE PLATES Next install the side plates. The driver’s side is shown; the longer flange goes toward the front of the truck and the single oval hole to the rear. Place the side plate over the side plate studs that have been installed in the frame. Secure with a flat washer, lock washer, and 1/2” nut. Hand tighten until the sideplate is against the frame and flat washer on the stud assembly. Attach the front flange of the side plate to the front angle crossmember.