User Manual

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Model 1257R

www.turnoverball.com

Call or Email us for Installation Support

800.248.6564 hitches@turnoverball.com

Turnoverball

Gooseneck Hitch Installation Instructions

B&W Trailer Hitches

1216 Hawaii Road / PO Box 186

Humboldt, KS 66748

P:620.473.3664

F:620.473.3766

Toyota Tundra (2007 - 2014)

NOTICE: The 2-5/16 Ball cannot be turned over and stored in the

socket of this hitch.

NOTICE: At this time no accessories, including the model

RVK3000 RV Companion 5th wheel hitch and the RVK3400 slider,

will work with this model of turnoverball™ except:

• 4” Toyota Hitch Extender (part# GNXA4585)

• RV Companion 5th wheel hitch (model RVK3500),

with special socket post.

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 (GNRM1257)

ITEM DESCRIPTION QTY

1 Driver Side Plate 1

2 Passenger Side plate 1

3 Crossmembers 2

4 Crossmember Brace 2

Mounting Kit Bolt Bag

5 1/8” Frame Spacer 2

6 1/4” Frame Spacer 2

7 Exhaust Relocation Bracket 1

8 Wire Relocation Bracket 1

5/16” Carriage Bolts 1

5/16” Flange Nut 1

1/2” X 2” Carriage Bolt 12

1/2” Finish Nut 12

1/2” Lock washer 12

1/2” Flat Washer 12

5/8” X 1-1/2” Cap Screw 4

5/8 Finish Nut 4

5/8” Lock Washer 4

5/8” Flat Washer 4

Center Box (GNRC1256)

ITEM DESCRIPTION QTY

9 Center Section 1

10 Latch Pin Handle 1

11 Ball Socket Plug 1

12 2-5/16” Ball 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 P:620.473.3664 F:620.473.3766 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 1257R Call or Email us for Installation Support 800.248.6564 Toyota Tundra (2007 - 2014) hitches@turnoverball.com www.turnoverball.
PAGE 2
BEFORE INSTALLING- OVERHEAD LIFTING DEVICE An overhead-lifting device, such as chain falls, engine hoist, or cable comea-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 floor and attach it to the latch pin in the round hitch receiver tube in the center section.
PAGE 3
STEP 2 – Pre-Installation Remove the two bolts holding the exhaust heat shield using a 10 mm wrench. Locate the fuel pump control on the inside of the driver’s side frame. Using a 12 mm wrench remove the two nuts on the outside of the frame that are holding it in place (Fig. 1). Retain the nuts to be replaced later. Next locate the fuel vapor canister box mounted just under the front bed crossmember on the driver’s side of the truck. Remove the nut holding the wiring bracket to the back of the box (Fig. 2).
PAGE 4
STEP 6 - Tighten Hardware Make sure that the hitch crossmembers are spaced equally from side-to-side and front to rear. Make sure the center section is tight against the under side of the truck bed and tighten the eight 1/2” carriage bolts holding the center section to the crossmembers to 80 ft. lbs. Next tighten the four 1/2” carriage bolts holding the crossmembers to the side plates to 80 ft. lbs.