Rubicon Express RE5520 - Manual (Page 3)

RI5520 Page 3 of 3
PHOTO 5
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< SHACKLE END – PHOTO 7 – FRAME END (MILITARY WRAP) >
LIFT KIT TROUBLESHOOTING
REAR DRIVELINE:
Acceleration vibration: Caused by the pinion being too high in relation
to the transfer case output shaft. On leaf sprung vehicles, install axle
shims to lower pinion accordingly.
Deceleration vibration: Caused by the pinion being too low in relation
to the transfer case output shaft. On leaf sprung vehicles, install axle
shims to raise pinion accordingly.
Slip yoke vibration: Caused by excessive angle at the rear transfer case
slip yoke. Very common on vehicles with 2” or more of lift. The transfer
case drop kit and shims provided may be an acceptable temporary fix
(pinion adjustment may also be required- see acceleration and
deceleration vibration troubleshooting above). If this is not acceptable,
a slip yoke eliminator and CV drive shaft is likely required and highly
recommended. Adjust pinion so it is 2 degrees below parallel with CV
drive shaft (see acceleration and deceleration vibration troubleshooting
above). Note that transfer case drop kits can usually be omitted when
using a CV drive shaft.
BUMP STEER:
Caused by improper relationship of drag link and track bar. This is not
typically a problem with the included track bar bracket and drop
pitman arm.