Tuff Country 26813 - Ford 80-96 6 rear box kit - Manual (Page 4)

9. Locate the new rear add-a-leafs. Also, locate the new 3/8”
centering bolts and nuts from hardware bag 24813NB.
Working on the driver side, install the new add-a-leaf
between the stock spring and the stock overload. Secure
using the new 3/8” centering bolt and nuts. Tighten the new
centering bolt until all the springs come together and torque
to 40 ft lbs. Special note: Tuff Country does not recom-
mend using an air gun to tighten the nut all the way
down. Once the springs are starting to come together,
Tuff Country recommends using a hand wrench to finish
tightening the nut. If an air gun is used to tighten the
centering bolt all the way down, the centering bolt may
strip causing the springs to come apart. Repeat proce-
dure on the passenger side.
10. Working on the driver side and using a die grinder, care-
fully cut off the excess thread from the new centering bolt.
Repeat procedure on the passenger side.
11. Locate the new blocks. Working on the driver side, install
the new block into the stock location. Special note: If the
new block that you are installing has a taper to it, make
sure to install the smaller end of the block towards the
front of the vehicle. Repeat procedure on the passenger
side. Carefully raise up on both hydraulic floor jacks that are
holding the rear axle until the new blocks make contact with
the stock springs.
12. Locate (4) 9/16” x 3 1/2” x 12 1/2” round u-bolts. Locate
(8) 9/16” u-bolt high nuts and (8) 9/16” u-bolt harden wash-
ers from hardware bag 916NW. Also, locate the stock upper
u-bolt plate. Working on the driver side, secure the axle to
the stock spring using the new u-bolts, u-bolt hardware and
stock u-bolts plates. Torque to 110 ft lbs. Repeat procedure
on the passenger side.
13. Locate the new rear shocks. New longer rear shocks
are needed after this suspension system has been
installed and the rear shocks need to be ordered as a
separate part #. If you have not already ordered your
rear shocks, please feel free to contact Tuff Country or
your local Tuff Country dealer and order your rear
shocks. Tuff Country recommends installing a 30” fully
extended nitrogen gas shock in the rear. Working on the
new shocks, install the new bushings and proper sleeves
that are packaged with the new shocks into each eyelet of
the new shocks. Special note: Make sure to use a lithium
or moly base grease prior to installing the new bushings
and sleeves into the eyelets of the new shocks. This will
help with the life of the bushings as well as prevent
squeaking.
14. Locate the stock upper and lower shock mounting hard-
ware. Working on the driver side, install the new shocks into
the stock location using the stock upper and lower hardware.
Make sure to use thread locker or loctite and torque both the
upper and lower hardware to 65 ft lbs. Repeat procedure on
the passenger side. Special note: Tuff Country highly rec-
ommends installing shock boots onto the new shocks. If
shocks boots are not installed, damage may occur to the
piston of the new shock. If you have not already ordered
your new shocks boots, please contact Tuff Country or
your local Tuff Country dealer and order some new
shock boots. Tuff Country offers, dark blue, light blue,
gray, black, red or yellow shock boots.
15. Remove both hydraulic floor jacks from under the vehi-
cle.
16. Working on the driver side, remove the stock e-clip that
is holding the stock brake line to the stock location. The
stock e-clip may be discarded.
17. Carefully pull the stock brake line downward, pulling the
line through the stock hole.