Tuff Country 52925 - Toyota Tundra 99-06 2.5 lift kit - Manual (Page 4)

to the new extension bracket using the new 8 mm x 15
mm bolt and hardware, into the top position and the
remaining stock bolt in the middle position. Special note:
Make sure to use thread locker or lock tite. Torque
the stock and new hardware to 20 ft lbs.
23. Position a pair of hydraulic floor jacks under the rear
differential. Place one jack stand on the driver side and
one on the passenger side. Raise up on both hydraulic
floor jacks at the same time until they make contact with
the rear differential. Working on the driver side, remove
the stock rear u-bolts. The stock rear u-bolts and
hardware may be discarded. Place the stock u-bolt plate
and the stock bump stop a side for later re-installation.
Repeat procedure on the passenger side.
24. Carefully lower down on both hydraulic floor jacks at
the same time until the stock rear spring assembly
separates from the stock rear axle approximately 2”. This
will allow enough room for the new rear blocks to be
installed.
25. Locate (2) new rear lifted blocks. Working on the
driver side, install the new rear lifted block between that
axle and the stock spring assembly. Special note: The
new rear lifted block has a slight taper to it, make
sure that the taper of the block is facing towards the
front of the vehicle. Repeat procedure on the
passenger side.
26. Locate (4) 9/16” x 2 1/2” x 9 1/2” square u-bolts.
Locate (8) new 9/16” u-bolt high nuts and (8) new 9/16”
u-bolt washers from hardware bag 916NW. Also, locate
the stock u-bolt plates and the stock bump stops that
were removed from step # 23. Working on the driver side,
re-install the stock u-bolt plate and bump stop into the
stock location. Secure the stock spring assembly to the
stock axle using the new u-bolts, u-bolt high nuts and the
new u-bolt washers. Torque to 85 ft lbs. Repeat
procedure on the passenger side. If needed, carefully
cut off the excess threads on the new u-bolts about
an 1” below the new high nuts.
Illustration # 2
27. Locate the stock lower shock hardware that was
removed in step # 21. Working on the driver side, install
the stock shock into the stock lower location and secure
using the stock hardware. Torque to 65 ft lbs. Repeat
procedure on the passenger side.
28. Re-install the tires and wheels and torque to 75 ft
lbs. Carefully lower the vehicle to the ground.
Check and double check to make sure that all steps were
performed properly. Once installation is complete take
vehicle directly to an alignment center for proper front end
alignment.
If you have any questions and or concerns about the
installation, please feel free to contact one of our customer
services representatives @ Tuff Country EZ-Ride
suspension
passenger side. Carefully lift up on both hydraulic floor
jacks until they make contact with the front differential.
17. Working on the driver side, carefully remove the stock
bolt that connects the stock front differential to the stock
front cross member. Save the stock oversize washer. The
stock bolt and nut may be discarded. Repeat procedure
on the passenger side.
18. Locate (2) new S10051, front differential spacer
sleeves. Locate (2) 1/2” x 8” bolts and (2) 1/2” unitorque
nuts from hardware bag 52925NB. Also, locate the stock
oversize washers that where removed in step # 17.
Carefully lower down on both hydraulic floor jacks
allowing enough room for the new front differential
spacers to be installed. Working on the driver side, install
the new front differential spacer between the front
differential and the stock front cross member and secure
using the new 1/2” x 8’ bolt, 1/2” unitorque nut and the
stock over size washer. Make sure to use thread locker
or lock tite. Do not tighten at this point. Repeat
procedure on the passenger side. Torque the new 1/2”
hardware to 80 ft lbs. Carefully remove both hydraulic
floor jacks front under the front differential.
19. Locate the stock front skid plate and the stock
hardware that was removed in step # 15. Also, locate (2)
new 8 mm x 35 mm bolts from hardware bag 52925NB.
Install the stock front skid plate into the stock location
and secure using the stock hardware in the front holes
and the new 8 mm bolt in the rear. Make sure to use
thread locker or lock tite. Do not tighten at this point.
Front End Installation Complete:
Rear End Installation:
20. To begin installation, block the front tires of the
vehicle so that the vehicle is stable and can’t roll forward.
Safely lift the rear of the vehicle and support the frame
with a pair of jack stands. Place the jacks stands on both
the driver and the passenger side. Make sure that the
parking brake is not set. Next, remove the tires and
wheels from both sides.
21. Working on the driver side, remove the stock shock
from the stock lower location and save the stock
hardware for later re-installation. Special note: Do not
remove the stock shock from the upper location.
Repeat procedure on the passenger side.
22. Locate the new rear brake proportioning valve
extending bracket. Also, locate (1) 8 mm x 15 mm bolt
and (1) 8 mm unitorque nut from hardware bag 52925NB.
Remove the stock rear brake proportioning valve arm
where it attaches to the rear differential housing. Save
the stock hardware. Secure the new rear brake
proportioning valve extending bracket to the stock rear
differential housing using (1) of the stock bolts (in the
lower position). Next, secure the proportioning valve arm