Owners manual

3
IMPORTANT NOTES
A. Before installing this system, have the vehicle’s alignment
and frame checked by a certified technician. The alignment
must be within factory specifications and the frame of the
vehicle must be sound (no cracks, damage or corrosion).
Have all suspension, steering and driveline components
inspected and replaced if worn or damaged
B. The components of Rancho’s suspension system are designed
as a single integrated system. To avoid compromises in terms
of safety, performance, durability or function, do not install a
body lift kit with Rancho’s suspension system or interchange
parts from this system with components from another
manufacturer. Use of other components will result in the
forfeiture of any type of warranty on the vehicle/suspension
system.
C. Some components required for the installation of this kit may
need to be purchased separately. See “SPECIFICATIONS &
REQUIREMENTS” on next page of this manual.
D. Compare the contents of this system with the parts list in
these instructions. If any parts are missing, contact the
Rancho Technical Department at 1-734-384-7804.
E. Do not powder-coat or plate any of the components in this
system. To change the appearance of components,
automotive paint can be applied over the original coating.
F. Each hardware kit in this system contains fasteners of high
strength and specific size. Do not mix hardware kits or
substitute a fastener of lesser strength. See bolt identification
table at end of instruction.
G. Install all nuts and bolts with a flat washer. When both SAE
(small OD) and USS (large OD) washers are used in a fastener
assembly, place the USS washer against the slotted hole and
the SAE washer against the round hole.
H. Apply a drop of thread locking compound to all bolts during
installation. CAUTION: Thread locking compound may
irritate sensitive skin. Read warning label on container before
use.
I. Unless otherwise specified, tighten all nuts and bolts to the
standard torque specifications shown in the table at end of
instruction. USE A TORQUE WRENCH for accurate
measurements.
J. Do not weld anything to these components, and do not weld
any of these components to the vehicle unless specifically
stated in the instructions Welding on a vehicle creates an
electrical charge throughout the body and frame. Disconnect
the vehicle’s battery prior to any welding. Place welding
ground clamps as near as possible to the weld. Never use a
vehicle suspension component as a welding ground point.
K. It is extremely important to replace coil springs, axle flanges,
and drive shaft/pinion relationships as original. Be sure to
mark left/right, front/rear, and indexing of mating parts
before disassembly. A paint marker or light colored nail
polish is handy for this.
L. Suspension components that use rubber or urethane
bushings should be tightened with the vehicle at normal ride
height unless otherwise specified. This will prevent
premature failure of the bushing and maintain ride comfort.
M. Some of the service procedures require the use of special
tools designed for specific procedures. If you do not know
how to safely use any of these tools, or do not have them,
stop the project and consult a qualified mechanic. See “Tools
and Supplies” on next page of this manual
N. The required installation time for this system is
approximately 2 hours for two people. Check off the box ()
at the beginning of each step when you finish it. Then when
you stop during the installation, it will be easier to find where
you need to continue from.
O. Important information for the end user is contained in the
consumer/installer information pack. If you are installing this
system for someone else, place the information pack on the
driver’s seat. Please include the installation instructions when
you finish.
P. The lifespan of Rancho products depends on many factors.
Improper use, abuse or harsh use in general may compromise
the integrity of the suspension system and significantly
reduce its lifespan. The suspension system is also subject to
wear over time. Have the suspension system regularly
inspected and maintained by qualified mechanics. If the
inspection reveals any damage or excessive wear, no matter
how slight, immediately replace or repair the component.
The suspension system must be regularly maintained in order
to optimize its safe and efficient use. The more severe the
conditions under which the suspension system is operated,
the more often it must be inspected and maintained.
Q. If any component breaks or bends, contact your local Rancho
dealer or Rancho for replacement parts or, contact the
Rancho Technical Department at 1-734-384-7804.
Thank you for purchasing the best suspension system available. For the best installed system, follow these instructions. If you
do not have the tools or are unsure of your abilities, have this system installed by a certified technician. RANCHO IS NOT
RESPONSIBLE FOR DAMAGE OR FAILURE RESULTING FROM AN IMPROPER INSTALLATION
The driver of this suspension system recognizes and agrees that there are risks inherent in driving a vehicle with a lifted suspension system, including
but not limited to the risk that you could be involved in an accident that would not occur in an unmodified vehicle. By his/her purchase and use of this
suspension system, the user expressly, voluntarily and knowingly accepts and assumes these risks, and agrees to hold Tenneco, Inc. and its related
companies harmless to the fullest extent permitted by law against any resulting damages.