B&W Trailer Hitches Turnoverball Model 1257 (Toyota) - Manual

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 floor 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 fits in the 4” hole in the truck
bed floor. Maintaining upward pressure may facilitate fastening the cross-
member to the center section, especially if the truck bed floor 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.
INSTALLATION INSTRUCTIONS
BALL LOCATION:
2007 Toyota Tundra 4” hole location 42
3
/
8
” All beds.
Important Information
Because of space restraints the 2007 Toyota Tundra mounting kit contains components that have
not been seen in any previous Turnoverball™ kits. For this reason it will not be possible to
store the ball in the inverted position. It also makes the 4” hole location very critical. It
is important to read the complete instruction sheet before beginning the installation.
STEP 1 – MARKING AND CUTTING 4 INCH HOLE IN TRUCK BED
Begin by measuring for the correct hole location in the truck bed floor. Measure from the tail gate end of
the truck bed floor by hooking a tape measure over the end of the truck box and mark the floor at 42
3
/
8
”.
Next find the center point between the wheel wells, where these marks intersect with the first measurement
will be the center point of your four inch hole. This location is critical to the correct installation of the B&W
Turnoverball™ hitch so measure, mark and saw carefully. Make a four-inch hole at this location. B&W recom-
mends 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 account 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 difficult 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 underside of the bed
around the hole.
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 elec-
trical 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.
NOTICE:
At this time no accessories, including the model RVK3000 RV Companion 5th wheel hitch, will work with this model
of turnoverball™ except:
• 4” Toyota Hitch Extender (part# 4585)
• RV Companion 5th wheel hitch (model RVK3500),
with special socket post.
BEFORE INSTALLING-
OVERHEAD LIFTING DEVICE
STEP 3 – Cross Member Installation
There are four crossmember parts included in the kit. Two channel type and two flat type. Place one of the
channel crossmembers between the top of the frame and the under side of the bed. Make sure that both
flanges of the channel are facing down and the notches at each end are toward the front of the truck. Once
the crossmember is across both frame rails rotate it down and slide forward. Next install a flat crossmem-
ber in the same manner and slide it forward. Install the other two in the same manner except with the
notches facing the rear of the truck. Slide them toward the rear as far as possible.
STEP 4 – Center Section Installation
Install 1/2” x 2” carriage bolts through the center four holes of the front crossmembers. The threaded
part of the bolts should face toward the rear of the truck with the square part of the bolts fitting into the
square holes in the crossmembers. With the latch pin on the driver’s side, lift the center section up on to
the bolts and hand tighten with flat washers, lock washers, and nuts. Now the center section and the front
crossmember can slide forward. This will allow the 4” round top of the center to be placed into the hole in
the truck bed. A lifting device as describe previously will help if available. With the top of the center section
placed through the hole in the bed, slide the rear crossmembers against the rear of the center and install
carriage bolts in the same manner as before. All bolts must be left loose at this point for sideplate instal-
lation.
STEP 5 – Side Plate Installation
Using the diagram at the right determine the driver and passenger side-
plates. Place the appropriate side plate on the inside of the frame with the
small flanges fitting between the crossmembers. The top long flange will
sit on the upper leg of the frame with the bottom long flange sitting on
the top of lower leg of the frame. With each sideplate in place insert car-
riage bolts through the square holes in the crossmembers and through the
small flanges on the sideplates. Place a flat washer, lock washer and nut
on the bolts and leave loose at this time.
Next place a 5/8” x 1-1/2” bolt with a flat
washer and frame spacer (see diagram at
right) through the oval holes in the frame.
Two will go through the bottom frame leg
using a 1/4” frame spacer and two in the
top frame leg using a 1/8” frame spacer. Af-
ter passing through the frame and sideplate
install a lock washer and nut.
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). This will be relocated later. On the top of the
passenger side frame rail locate the plastic wiring bracket and remove from top of frame. Place the wiring
harness inside the frame rail. It will be held in place with the sideplate. Locate the tail pipe hanger toward
the back of the tail pipe and slide the rubber hanger off of the tubing that is welded to the pipe (Fig. 3).
(Fig. 1) (Fig. 2) (Fig. 3)