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Old 06-29-09, 01:37 PM   #1 (permalink)
slickrock
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Join Date: Aug 2005
Location: Lemoore, CA (south of Fresno)
TLCA# 18284
Posts: 3,269
please check my understanding of proper cut and turn

I am planning on doing a front SOA on my 73 40 with widen spring perches, FJ 60 front axle and 60 series steering. I have read and read the posts and tech on how to do this. I wanted to write out what I believe is the correct procedure and I am looking for confirmation. I am skipping lots of little stuff and trying to focus on the major. Specifically degrees for pinion, caster, and which way to turn the actual axle outers.
  • Rotate pinion from stock 0 degrees up towards the T-case to 4 degrees (do this with the weight of the rig on the axle. Since the axle will be torn down, I can use the flat surface where the third buts up to the axle housing for this measurement.
  • Cut through the outer axle housing at the knuckles. I will have 35” to 36” tires on the rig. I need to rotate the knuckles 14 degrees plus the 4 degrees for the pinion. Total turn degree will then be 18 degrees (up towards the pinion). Does this sound about right for my size tires?
  • My big question, and the posts and tech do not specifically say which way to do this, is which way do I turn the outers for the caster angle? Since I am rotating the pinion up, the driver side knuckle will rotate counterclockwise and the passenger side will rotate clockwise, or driver side rotate to the left and passenger to the right. Is this correct?

__________________
Father of Slickpebble . . . 8/73 FJ40, flipped F/R Springs (almost 100" WB), SOA, 60 series front axle, grooved 35 BFG muds, fully locked, 60 series power steering, full cage, 60 series ignition, hydro assist in future: AKA Slickrock or Dusty's tow truck.

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