Rubicon Express RE8005 - Manual (Page 2)

RI8005 Page 2 of 2
lt
r
s low as possible (see photo 4). Use the factory
y torque specs.
of steering wheel. Adjust drag link to
heel.
minimum
0 miles and again after every off road
28. Install the track bar in the track bar bracket using the Torx bo
removed in step #25. It may be easier to do this later with weight
on the vehicle.
29. Set rear lower control arm length to 17.25” (center hole to cente
hole), for 3.5” lift. Install the lower control arms with the offset tube
at the axle and a
hardware (don’t fully tighten until vehicle is back on the ground).
30. Install springs. Spring compressors may be helpful.
31. Install replacement sway bar end links.
32. Install longer rear shocks.
33. Install all tires.
34. Double-check all nuts and bolts to factor
35. Test drive and note location
center steering w
36. Align vehicle as soon as practical. A good rule of thumb is
factory caster and maximum factory toe-in.
37. Recheck all bolts after 5
excursion.
< AXLE END (TUBE OFFSET DOWN) - PHOTO 1 – FRAME END >
PHOTO 2
< UNI-BODY END – PHOTO 4 – AXLE END (TUBE OFFSET DOWN) >
TROUBLES HOOTING
Rear driveline:
cceleration vibration: A
PHOTO 3
Caus oo high in relation to
utput shaft. Adjust lower control arm to lower pinion
ibration:
ed by the pinion being t
the transfer case o
accordingly.
Deceleration v Caused by the pinion being too low in relation to
ase output shaft. Adjust lower control arm to raise pinion
ation:
the transfer c
accordingly.
Slip yoke vibr Caused by excessive angle on the transfer case slip
ke. Very common on vehicles with 2” or more of lift. This can usually
V
his is fairly common with y-type steering on lifted ZJ's. It is a condition
mmy after hitting a bump. Avoid bias ply tires
To correct,
ing the instructions supplied with the track bar.
yo
be cured on 3.5” lifts with a transfer case drop kit. Note that pinion
adjustment may also be required - see acceleration and deceleration
vibration troubleshooting above. For best performance, consider a slip
yoke eliminator (SYE) kit and CV drive shaft (note that upper rear
adjustable control arms will be required for adjusting pinion angle for C
type shaft). Adjust pinion so it is 2 degrees below parallel with CV drive
shaft (see acceleration and deceleration vibration troubleshooting
above). A transfer case drop kit can usually be omitted with a CV drive
shaft.
High speed wobble:
T
where front tires will shi
and wheels with excessive offset. Check for worn or loose parts. In most
cases a reduction of positive castor will eliminate this condition. A good
rule of thumb is minimum factory caster and maximum factory toe in.
Note that lift heights increased with coil spacers (or taller coils) may
exhibit wobble that cannot be corrected with alignment.
Bump steer:
aused by improper relationship of drag link and track bar. C
center axle again follow
Next determine the neutral position of the steering wheel. Adjust the
drag link to center the steering wheel.