Tuff Country 14040 - Hummer H3 4 lift kit - Manual (Page 6)

recommended to inform the customer that these
bushings need to be lubed regularly. A suggestion is to
make sure that these bushings are lubed through the
sert fitting every time the customer has their oil
changed. Failure to lube the bushings properly could
cause the bushing to fail prematurely.
Photo # 13
28. Locate the (4) stock rear cross member bolts that were
removed in step # 21. Install the new rear cross member
into the stock location and secure using the stock
hardware. Do not tighten at this point. Special note: The
rear differential mounting tab that is welded onto the
rear cross member needs to be installed towards the
passenger side of the vehicle.
Photo # 14 / driver side shown
29. Carefully lower down on both hydraulic floor jacks at the
same allowing enough room for the new driver and
passenger side differential relocation bracket to be
installed.
30. Locate the driver side and passenger side differential
relocation brackets. Also, locate (2) 14 mm x 40 mm bolt,
(2) 14 mm flat washer and (2) 14 mm lock washer from
hardware bag 14040NB. Working on the driver side, install
the new driver side differential relocation bracket to the
bottom side of the stock frame rail were the stock
differential was located. Secure using the new 14 mm x 40
mm bolt and hardware. Do not tighten at this point.
Repeat procedure on the passenger side.
31. Locate (2) 9/16” x 3 1/2” bolts, (4) 1/2” USS flat
washers and (2) 9/16” unitorque nuts from hardware bag
14040NB. Working on the driver side, install the stock front
differential mount to the newly installed driver side
differential relocation bracket and secure using the new
9/16” x 3 1/2” bolt and hardware. Do not tighten at this
point. Repeat procedure on the passenger side.
Photo # 15 / upper and lower mounting
hardware shown on the driver side
32. Working on the driver side, remove the stock upper rear
mounting bolt that connects the stock CV axle to the front
differential housing. Save the stock hardware for later
re-installation. Repeat procedure on the passenger side.
Photo # 16 / driver side shown
33. Locate the driver side and passenger side differential
kicker support brackets. Also, locate the stock upper rear
mounting bolts that were removed in step # 32. Working on
the driver side, install the new kicker support bracket to the
stock CV flange and the differential housing using the stock
bolt. Special note: Make sure to use thread locker or
lock tite and torque to 65 ft lbs. Repeat procedure on the
passenger side.
34. Locate (2) 3/8” x 1” bolts, (4) 5/16” USS flat washers
and (2) 3/8” unitorque nuts from hardware bag 14040NB.
Working on the driver side, secure the newly installed
driver side kicker support bracket to the newly installed
driver side differential relocation bracket using the new 3/8”
x 1” bolt and hardware. Do not tighten at this point.
Repeat procedure on the passenger side.
Photo # 17 / driver side shown
35. Locate the stock rear mounting hardware that attached
the rear portion of the stock front differential to the stock
rear cross member that was removed in step # 20. Locate
(2) PB106300018 poly bushings from hardware bag
14040PL. Also, locate (1) S10077 over size washers from
hardware bag 14040NB. Referring to photo # 18, secure
the rear portion of the stock front differential to the newly
installed rear cross member using the stock hardware, new
poly bushings and over size washer. Special note: if need
be, the hydraulic floor jacks may need to be let down
so that the rear portion of the front differential can be
installed to the rear cross member. For now, get the
stock bolt started into the rear portion of the front
differential.
Photo # 18
36. Install some thread locker or lock tite on the rear
differential mounting bolt that was installed in step # 35 and
tighten the stock bolt until the measurement from the new
washer to the stock washer is 1 1/4”.
Photo # 19
37. Locate the stock lower control arms and the stock lower
control arm mounting hardware that was removed in step #
17. Working on the driver side, install the stock lower
control arm to the newly installed front cross members
using the stock hardware. Do not tighten the stock front
mounting hardware at this point. Secure the stock lower
control arm to the newly installed rear cross member using
the stock hardware. Make sure to use thread locker or lock
tite and torque to 95 ft lbs. Repeat procedure on the
passenger side.
Photo # 20 / front location
Photo # 21 / rear location
38. Locate the new driver side and passenger side knuck-
les. Locate the stock upper control arm ball joint hardware
that was removed in step # 16. Locate the stock lower
control arm ball joint nuts that we removed in step # 16.
Also, locate the stock CV axle nut that was removed in step
# 13. Working on the driver side, slide the stock CV axle
onto the new knuckle. Attach the lower control arm ball joint
to the new knuckle and secure using the stock lower
control arm ball joint. Do not tighten at this point. Next,
attach the upper control arm ball joint to the new knuckle
and secure using the stock upper control arm ball joint bolt
and nut. Do not tighten at this point. Secure the stock CV
axle shaft to the new knuckle using the stock hardware.
Make sure to use thread locker or lock tite and torque the
stock CV axle nut to 130 ft lbs. Move back to the upper
control arm ball joint mounting hardware and add some
thread locker or lock tite and torque the stock upper control