Tuff Country 20874 - Ford 81-96 F150 4 Drop Radius Arm Brackets - Manual (Page 3)

Please follow instructions carefully:
1. To begin installation, block the rear tires of the vehicle so
that the vehicle is stable and can’t roll backwards. Safely lift
the front of the vehicle and support the vehicle with a pair of
jack stands. Place a jack stand on both the driver and the
passenger side. Special note: Place the jack stands on
the body mounts.
2. Place a pair of hydraulic floor jacks under the driver and
passenger side stock radius arms. Carefully raise up on the
hydraulic floor jacks until they come into contact with the
stock radius arms.
3. Working on the driver side stock radius arm bracket,
remove the stock hardware or the stock rivets that connect
the bracket to the frame rail. The stock hardware and rivets
may be discard. Repeat procedure on the passenger side.
Special note: Using a die grinder and making a cross cut
on the rivets then using a air chisel will help make the
removal of the rivets easier.
4. Using a 1/2” drill bit, carefully clean the stock frame rail on
the driver and passenger side and also clean each hole on
the stock driver and passenger side radius arm relocation
bracket.
5. Locate the driver and passenger side radius arm reloca-
tion brackets. Locate (8) 1/2” x 1 1/2” bolts, (16) 7/16” USS
flat washers and (8) 1/2” unitorque nuts from hardware bag
F2NB. Working on the driver side, install the new radius arm
relocation bracket into the stock location and secure using
the new 1/2” x 1 1/2” bolts and hardware. Do not tighten at
this point. Repeat procedure on the passenger side.
6. Locate (8) 1/2” x 1 1/2” bolts, (16) 7/16” USS flat washers
and (8) 1/2” unitorque nuts from hardware bag F2NB.
Working on the driver side, install the stock driver side radius
arm bracket to the newly installed radius arm relocation
bracket. Secure using the new 1/2” x 1 1/2” bolts and hard-
ware. Add some thread locker or loctite on the (8) 1/2” x 1
1/2” bolts holding the new bracket to the frame and the stock
bracket to the new bracket and torque all (8) bolts to 75 ft
lbs. Repeat procedure on the passenger side.
7. Remove the hydraulic floor jacks from under the stock
radius arms and carefully lower the vehicle to the ground.
Congratulations, installation complete