B&W Trailer Hitches 1251R User Manual

B&W Trailer Hitches

1216 Hawaii Road / PO Box 186
Humboldt, KS 66748

800.248.6564

620.473.3664
Fax:[phone]

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

TurnoverballTM Gooseneck Hitch Installation Instructions

Model 1251R

Toyota Tundra
(2000 - 2006)

Call or Email us for Installation Support

[e-mail]

www.turnoverball.com

Mounting Kit Box (GNRM1251)

ITEM DESCRIPTION QTY

1 Front Driver Side Plate 1

2 Front Passenger Side Plate 1

3 Front Crossmember 1

4 Rear Crossmember 1

Mounting Kit Bolt Bag

1/2" X 1-1/2" Cap Screw 12

1/2” Flat Washer 12

1/2” Lock Washer 12

3/4" X 2-1/2" Cap Screw 4

3/4" Flat Washer 8

3/4” Lock Washer 4

3/4" Finish Nut 4

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 (GNRC1250)

ITEM DESCRIPTION QTY

5 Center Section 1

6 2-5/16" Ball 1

7 Latch pin Handle 1

Safety Chain Kit Bolt Bag

8 1/2” U-Bolt 2

9 Conical Springs 4

10 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 section 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, es-

pecially 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, tightening fasteners, and lifting and lowering the
truck bed. 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 crossmember 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

General Information

The Toyota Tundra truck has two bed cross members about six inches apart over the rear axle. A special

center section has been developed to t between these two bed cross members. The center section is formed

to allow the Turnoverball™ cross bars to be located in front of and behind the bed cross members. Because

the center section ts so closely between the cross members, it is very important that the 4” hole in the

truck bed oor be carefully measured and precisely located. This hitch
also utilizes side plates that attach to the inside of the truck frame rails, rather
than the outsides of the frame as do other Turnoverball™ hitches.

STEP ONE

Begin by verifying and measuring the correct hole location in the truck bed

oor. Measure from the back end (tail gate end) of the truck bed oor by hook­ing a tape measure over the back of the sheet metal and marking the oor at

the 46 1/4”. Center the measurement between the fender wheel wells. This
location is critical to the correct installation of this hitch, so measure, mark and
saw carefully. If the truck has a plastic bed liner, you may drill 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 while sawing the
hole. Make a four-inch hole at this location using a four-inch hole saw, or by
marking a four-inch circle and cutting it out with a saber saw equipped with a
metal cutting blade.