3
N.
The required installation time for this system is
approximately 8 hours. 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.
This suspension system was developed using the
following tire & wheel combination: BFG All Terrain™
315/70 R17 tire, 17 x 8 wheel with 5.5 inches of wheel
backspacing. Total backspacing is 6.5 inches.
Trimming
the bottom corners of the front bumper is required.
20”
OE wheels with 275/65 R20 tires will fit this system. Before
installing any other combination, consult your local tire and
wheel specialist.
P.
Rear axle offset may be noticed on some vehicles. The
offset will vary somewhat with vehicle loading. Another
factor is how centered the axle was under the body from the
factory. For reference, it is recommended that you measure
your vehicle’s rear axle offset before installation of this kit.
Q.
This suspension system will fit both 2WD and 4WD
vehicles. If you are installing this system on a 2WD vehicle,
omit steps pertaining to the front axle assembly. Also, follow
the specific 2WD steps for aft brace installation.
R.
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.
S.
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
SUSPENSION
IS
NOT
RESPONSIBLE FOR DAMAGE OR FAILURE RESULTING
FROM AN IMPROPER OR MODIFIED INSTALLATION…
STANDARD BOLT TORQUE & IDENTIFICATION
INCH SYSTEM
METRIC SYSTEM
Bolt Size
Grade 5
Grade 8
Bolt Size
Class 9.8
Class 10.9
Class 12.9
5/16
15 FT-LB
20 FT-LB
M6
5 FT-LB
9 FT-LB
12 FT-LB
3/8
30 FT-LB
35 FT-LB
M8
18 FT-LB
23 FT-LB
27 FT-LB
7/16
45 FT-LB
60 FT-LB
M10
32 FT-LB
45 FT-LB
50 FT-LB
1/2
65 FT-LB
90 FT-LB
M12
55 FT-LB
75 FT-LB
90 FT-LB
9/16
95 FT-LB
130 FT-LB
M14
85 FT-LB
120 FT-LB
145 FT-LB
5/8
135 FT-LB
175 FT-LB
M16
130 FT-LB
165FT-LB
210 FT-LB
3/4
185 FT-LB
280 FT-LB
M18
170 FT-LB
240FT-LB
290 FT-LB
