Rubicon Express RE6300 User Manual
Page 4

RI6300 Page 4 of 4
H. Reinstall crossmember and bolt transmission adapter bracket to it with the supplied 5/16” flat head hardware.
Tighten all crossmember and adapter bolts.
Step 3 – Control Arms
A. Adjust front lower control arms’ length to an initial setting of 37-3/4” from bolt center to bolt center. Install
adjustable end of arm to control arm mount with supplied 9/16” hardware (zerk on bottom). Position the arms so
the welded on brackets for the front upper arms are on top and leaning toward each other– refer back to Photo 3. If
necessary, final length can be adjusted after putting vehicle back on ground and checking for axle position and
clearance of track bar to differential etc.
B. Adjust front upper control arms’ length to an initial setting of 15-3/4” from bolt center to bolt center. Install front
upper arms’ rubber bushing end into the welded-on bracket of the lower arms with supplied 10 mm hardware. The
upper arms will be used to adjust final caster and pinion angle after the lower arms are set at their final length.
C. Attach front lower control arms to axle with factory hardware, and attach upper arms to axle with supplied 10mm
hardware
D. Continue with step 14 of RE6200 instructions and remember to install the RE2500 drop pitman arm about the time
you install the front track bar and bracket (step 19 of RE6200 instructions).