Tuff Country 16710 - GM 73-87 6 1/2 ton box kit User Manual
Page 3
Special note: Before installation begins, it is the
customers/installers responsibility to make sure that all
parts are on hand. If any parts are missing, please feel
free to call one of our customer service representatives
@ (801) 280-2777.
Hardware bag 58NW includes:
Description
Quantity
SUW-58 (5/8” u-bolt harden washer)
8
58HN (5/8” u-bolt high nut)
8
Hardware bag 10701NB includes:
Description
Quantity
GMSB-01 (sway bar tube)
2
716212B (7/16” x 2 1/2” bolt)
4
38WA (3/8” USS flat washer)
8
716UN (7/16” unitorque nut)
4
Hardware bag 10703NB includes:
Description
Quantity
S10197 (transfer case drop sleeve)
2
7163B (7/16” x 3” bolt)
4
38WA (3/8” USS flat washer)
8
716UN (7/16” unitorque nut)
4
Hardware bag GMSBNB1 includes:
Description
Quantity
916512B (9/16” x 5 1/2” bolt)
2
12WA (1/2” USS flat washer)
4
916UN (9/16” unitorque nut)
2
7164B (7/16” x 4” bolt)
2
38WA (3/8” USS flat washer)
4
716UN (7/16” unitorque nut)
2
Hardware bag GMBL includes:
Description
Quantity
BLR01 (rear brake line bracket)
1
BLR02 (front brake line bracket)
2
5161B (5/16” x 1” bolt)
3
14WA (1/4” USS flat washer)
6
516UN (5/16” unitorque nut)
3
Recommended tools selection:
Cut off wheel
Sawzall
Torque wrench
Standard socket set
Standard wrench set
Metric socket set
Metric wrench set
Tape measure
Hydraulic floor jacks
Please follow instructions carefully:
Before installation begins, measure from the center of
the hub, to the bottom of the fender well, and record
measurements below.
Pre-installation measurements:
Driver side front:_________________________________
Passenger side front:_____________________________
Driver side rear:__________________________________
Passenger side rear:______________________________
At the end of the installation take the same
measurements and compare to the pre-installation
measurements.
Post-installation measurements:
Driver side front:_________________________________
Passenger side front:_____________________________
Driver side rear:_________________________________
Passenger side rear:______________________________
Front end installation:
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 frame with a pair of
jack stands. Place a jack stand on both the driver and the
passenger side. Next, remove the front wheels and tires
from both sides.
2. Place a pair of hydraulic floor jacks under the front differ-
ential. Place one on the driver and one on the passenger
side. Carefully raise up on both hydraulic floor jacks at the
same time until they make contact with the front differential.
3. Working on the driver side, remove the stock shock from
the stock location. The stock shock may be discarded. Save
the stock hardware. Special note: New longer front
shocks are needed after this suspension system has
been installed and the front shocks need to be ordered
as a separate part #. If you have not already ordered
your front shocks, please feel free to contact Tuff
Country or your local Tuff Country dealer and order your
new front shocks. Tuff Country recommends installing a
23” fully extended nitrogen gas shock in the front. Also,
if the vehicle that you are working on is equipped with
dual shocks from the factory in the front end, Tuff
Country recommends installing a 26” fully extended
hydraulic shock for the auxiliary shock. Repeat proce-
dure on the passenger side.
4. Working on the driver side, remove the stock u-bolts from
the stock location. The stock u-bolts and hardware may be
discarded. Repeat procedure on the passenger side.
5. Working on the driver side, remove the stock hardware
that connects the stock sway bar to the stock frame rail. The
stock hardware may be discarded. Repeat procedure on the