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Correct backlash???


 
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JustOne
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Joined: 30 Mar 2007

PostPosted: Fri Mar 30, 2007 8:49 pm    Post subject: Correct backlash??? Reply with quote

What is the correct carrier backlash supposed to be set at??? Chrysler rear end.
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kaos
Member


Joined: 10 Jan 2006
Location: Iceland

PostPosted: Sat Mar 31, 2007 4:19 am    Post subject: Reply with quote

Hope this is what you need. Most of it is greek to me Smile Note that this is from a '93 XJ service manual. I guess it may be different for other model years.

Quote:
Cherokee 8 1/4" Ring Gear
1) Using hex adjuster, turn each adjuster until bearing free
play is eliminated with about .010" (.25 mm) backlash. To ensure
accurate adjustment, seat bearings by rotating differential carrier
1/2 turn, back and forth, 5-10 times each time adjusters are moved.
NOTE: Index gears so same teeth are meshed during all backlash
measurements. Maintain specified adjuster torque to obtain
accurate differential bearing preload.
2) Mount dial indicator on flange. Position indicator stem
against drive side of ring gear. Check backlash every 90 degrees to
find point of minimum backlash. Mark each position so backlash
readings will be taken with same teeth meshed. Rotate ring gear to
point of minimum backlash.
3) Tighten each adjuster to 10 ft. lbs. (14 N.m). Seat
bearings as instep 1). Measure backlash. If necessary, back out right
or left adjuster and turn in right or left adjuster until backlash is
.003-.004" (.08-.10 mm). Tighten and seat carrier bearings each time
adjusters are moved.
4) Tighten bearing cap bolts to 100 ft. lbs. (136 N.m). Using
hex adjuster, tighten right adjuster to 70 ft. lbs. (95 N.m). Seat
bearings, and continue to tighten adjuster until torque remains
constant at 70 ft. lbs. (95 N.m).
5) Check backlash again with indicator. If backlash is not
between .005-.008" (.13-.20 mm), increase torque on right adjuster and
seat bearings. Continue until backlash is .005-.008" (.13-.20 mm).
Tighten left adjuster to 70 ft. lbs. (95 N.m), and seat bearings. With
adjustments completed, install adjuster locks. Make sure lock teeth
are engaged in adjuster threads. Tighten lock bolts to specification.
6) After all adjustments, check gear tooth pattern and adjust
if necessary. See GEAR TOOTH CONTACT PATTERNS article in GENERAL
INFORMATION.


HTH
--
Kári
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