Installation Guide

Parts List
DESCRIPTION
PART NUMBER
QTY
ITEM
.125" FUEL LINE BRACKETCM-60644-FLB
11
CARRIAGE BOLT5/16-18 x 1
32
HEX FLANGE NUT5/16-18
33
CARRIAGE BOLT1/2-13 x 1 1/2
124
HEX BOLT1/2 - 13 x 1 1/245
WASHER,CONICAL,TOOTHED,1/2"1/2 CONICAL TOOTHED WASHER46
HEX FLANGE NUTHFN 121319
7
1/2-13 x 3 3/4 x 7 5/8 x 2 SQ U-BOLTCM-1213-UBS18
HEX HEAD BOLT-NC3_4 - 10 x 2 1/2 HEX29
FLAT WASHER
3_4 FW210
HEX FLANGE NUT
3_4 - 10 HFN211
60644 SUBKIT
Curt Manufacturing Inc., warrants this product to be free of defects in material or workmanship at the time of retail purchase by the original purchaser. If the product is found to be defective,
Curt Manufacturing Inc., may repair or replace the product, at their option,when the product is returned, prepaid, with proof of purchase. Alteration to, misuse of, or improper installation of
this product voids the warrant. Curt Manufacturing Inc.'s liability is limited to repair or replacement of products found to be defective, and specifically excludes liability for incidental or
consequential loss or damage.
Page 2
99-CURRENT FORD 3/4 & 1 TON SUPER DUTY, 08' F-450
(WITH OR WITHOUT AFTERMARKET AIR BAG OVERLOADS)
Installation Steps Continued
6. Install the rear crossarm (it has three notches). Slide the crossarm between the frame and bed on the driver's side. If
needed, use the notch cut out in Step 5. Make sure the leg of the angle with the oval holes is facing toward the cab and
slide the angle through until it rests on both frame rails. Next, using the notch over the shock bracket for clearance, roll
the angle iron over the bracket while sliding it toward the rear. Continue to slide it back until it is about four inches behind
the four inch hole in the truck bed. Next, install the front crossarm in the same way, except the leg of the angle with
the oval holes should face the rear of the truck. Slide it rearward slightly and leave it behind the shock bracket. This will
be left there until it is needed for installation.
7. If the emergency brake cable has been removed, place a 5/16" carriage bolt through the small square hole in the driver
sideplate, add a 5/16" flange nut loosely to hold in place. (See FIGURE C for orientation of bolt) This will be used to attach
the emergency brake cable bracket.
8. Install the "C" shaped mounting strap and side plate on the driver side of the truck. Take a mounting strap and position
around the frame approximately 6 1/2" in front of the slotted hole in the frame. (A U-Bolt will be used instead of mounting
strap on driver side of 2011 to current Ford Super Duty diesel) Next, take the sideplate and slide the bottom side between
the frame and the bottom of the mounting strap. Guide the stud through the hole in the plate and attach loosely with a 1/2"
flange nut. Place a 1/2" bolt with a conical toothed washer through the bottom of the mounting strap and hole in the sideplate
as shown in FIGURE C and attach loosely with 1/2" flange nut. Next, install 3/4" bolt and washer through hole in sideplate
then through the slot in the frame. Attach on backside of frame with a 3/4" flange nut. See FIGURE C for the orientation of
hardware for 2011 to current Ford to present Super Duty Diesel (It only varies on the driver side of this vehicle) and the
location of other hardware. Leave all hardware loose. Repeat process for passenger side.
**DO NOT EXCEED RECOMMENDED VEHICLE TOWING WEIGHT!**
WARNING!! BRAKE, FUEL, AND ELECTRICAL LINES MAY NEED TO BE LOOSENED OR REPOSITIONED TO PROVIDE CLEARANCE FOR
NEW HARDWARE. ALL MODELS REQUIRE MODIFICATION OR REMOVAL OF HEAT SHIELDS.ON SHORT BED MODELS, CHECK
FOR ADEQUATE TURNING CLEARANCE BETWEEN THE FRONT OF ALL TRAILERS AND THE TRUCK CAB.
SHOWN WITH C-600 (60607) INSTALLED
(NOT INCLUDED IN SUBKIT)
EXHAUST SPACER PLATE
EXHAUST SPACER MOUNT
REAR OF TRUCK
FRONT OF TRUCK
FIGURE C
USE THIS HARDWARE IN THIS
ORIENTATION FOR 2011 TO CURRENT
FORD SUPER DUTY DIESEL
USE U-BOLT
INSTEAD OF "C"
SHAPED MOUNTING STRAP
ON 2011 TO CURRENT FORD
SUPER DUTY DIESEL
(THIS SPACER IS ONLY USED
ON DRIVER SIDE OF 2011 TO CURRENT
FORD SUPER DUTY DIESEL)
5
1
7
5
11
10
7
9
4
2
8
3
NOTE: THE POSITION OF THE CENTER SHOWN HERE IS
FOR INSTALLATION ON 1999-2010 MODEL YEARS. THE
CENTER MUST BE ROTATED 180° FROM WHAT IS SHOWN
FOR INSTALLATION ON 2011 - CURRENT MODELS
6