Tuff Country 13090 - GM 11-13 Silverado 3500HD 3.5 lift kit - Manual (Page 4)

5. Carefully lower down on the hydraulic floor jacks holding
the front differential allowing enough room for the new differ-
ential spacers to be installed.
6. Locate (4) S10237 sleeves, (4) 9/16” x 5” bolts, (8) 1/2”
USS flat washers and (4) 9/16” unitorque nuts from hard-
ware bag 13085NB. Install the new differential spacer
sleeves between the front differential and the OE mounts
and secure using the new 9/16” hardware. Make sure to use
loctite and torque to 85 ft lbs. Carefully remove the hydraulic
floor jacks holding the front differential.
7. Working on the driver side, scribe a mark on the torsion
bar and the lower control arm. Special note: This is done
so that the torsion bar can be put back into the same
location on the lower control arm once the new torsion
bar key has been installed. Repeat procedure on the pas-
senger side.
8. Working on the driver side and using a proper torsion bar
removal tool. Special note: Tuff Country EZ-RIde
Suspension requires that a proper torsion bar unloading
tool be used when performing this installation. If you do
not have one, please contact your local GM dealer to
purchase one from them. Carefully remove the stock tor-
sion bar bolt and block. Set the stock torsion bar bolt and
block aside. Repeat procedure on the passenger side.
9. Working on the driver side, carefully tap the torsion bar
forward until the torsion bar key can be removed. Remove
and discard the torsion bar key. Repeat procedure on the
passenger side.
10. Working on the driver side, remove the upper shock
hardware holding the shock into the upper mounting loca-
tion. The hardware may be discarded. Remove the lower
shock hardware holding the shock to the lower control arm.
Save the lower hardware and shock. Repeat procedure on
the passenger side.