Jeep Wrangler 1997 Manual page 145

TJ
DIAGNOSIS AND TESTING (Continued)
COrvrrnUED
DIFFERENTIAL AND DRIVELINE
3-19
LOSS OF LUBRICANT
2 . Worn axle shaft seals .
3 . Crakked differential housing .
4 . Won drive pinion gear shaft
sea .
5 . Scored and worn yoke .
6 . Axl~ cover not properly sealed .
I
AXLE OVERHEATING
I
1 . Lub~icant level too low .
2 . Incorrect grade of lubricant .
GEAR TEETH BROKE
1
1 . Overloading .
(RING GEAR AND PINION)
2 . Err tic clutch operation .
3 . Ice- potted pavements .
4 . Imp}oper adjustments.
AXLE NOISE
CONDITION
~OSSIBILE CAUSES CORRECTION
3 . Bearings adjusted too tight .
4 . Excessive gear wear .
5 . Insufficient ring gear backlash .
5 . Loose drive pinion gear shaft
ings .
differential bearings .
ligned or sprung ring gear.
differential bearing cap
2 . Replace worn seals .
3 . Repair or replace housing as necessary.
4 . Replace worn drive pinion gear shaft seal .
5 . Replace worn or scored yoke and seal .
6 . Remove cover and clean flange and reseal .
1 . Refill differential housing .
2 . Drain, flush and refill with correct amount of the correct
lubricant.
3 . Readjust bearings .
4 . Inspect gears for excessive wear or scoring . Replace as
necessary.
5 . Readjust ring gear backlash and inspect gears for possible
scoring .
1 . Replace gears. Examine other gears and bearings for possible
damage .
2 . Replace gears and examine the remaining parts for possible
damage . Avoid erratic clutch operation .
3 . Replace gears . Examine the remaining parts for possible
damage . Replace parts as required .
4 . Replace gears . Examine other parts for possible damage .
Ensure ring gear backlash is correct .
1 . Refill axle with correct amount of the proper lubricant .
Also inspect for leaks and correct as necessary.
2 . Check ring gear and pinion gear teeth contact pattern .
3 . Remove unmatched ring gear and drive pinion gear.
Replace with matched gear and drive pinion gear set.
4 . Check teeth on ring gear and drive pinion gear for correct
contact . If necessary, replace with new matched set .
5 . Adjust drive pinion gearshaft bearing preload torque .
6 . Adjust differential bearing preload torque .
7 . Measure ring gear runout.
8 . Tighten with specified torque
J9503- 4