Gradall 544D (9136-4003) Service Manual - Manual (Page 288)

RICERCA GUASTI
Mod. 28.46M TROUBLESHOOTING
LA10077
E.2
PAG . 81
REVISION DATE : 00/00 P / N : CA357248
E.2 Axle problems and diagnosis
Problem Cause Action
Noise while driving 1. Excessive backlash between pinion
and ring gear
2. Worn out pinion and gear ring
3. Worn out pinion bearings
4. Pinion bearings loosened
5. Excessive axial pinion backlash
6. Worn out differential bearings
7. Differential bearings loosened
8. Ring gear out of roundness
9. Low lubricant level
10. Poor or wrong lubricant
11. Bent halfshaft 1. Adjust
2. Replace
3. Replace
4. Adjust
5. Adjust
6. Replace
7. Adjust
8. Replace
9. Oil level
10. Replace
11. Replace
Noise while driving in neutral 1. Noise coming from axle are usually
heard when vehicle moves in neutral
gear but are not loud.
2. Incorrect backlash between pinion and
ring (sound heard while decelerating
disappears while increasing the speed)
3. Pinion or input flange worn out 1. Replace or adjust (see above)
2. Replace
3. Adjust
Intermittent noise 1. Ring gear damaged
2. Differential box bolts loosened 1. Replace bevel gear set
2. Tighten to torque
Constant noise 1. Ring gear teeth or pinion damaged
2. Worn out bearings
3.Pinion spline worn out
4. Bent halfshaft 1. Replace bevel gear set
2. Replace
3. Replace
4. Replace
Noise while seering 1. Worn out differential gears
2. Worn out differential box or spider
3. Differential thrust washers worn out
4. Half shaft spline worn out 1. Replace
2. Replace
3. Replace
4. Replace