Case 580SR Service Manual page 430

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78
PROBLEM
Ring gear tooth broken on the
outer side
Ring gear tooth broken side
Pinion or ring gear teeth worn
Overheated ring and pinion teeth
See if gear teeth have faded
Pinion teeth pitting
Axle beam body bent
Worn out or pitted bearings
Oil leakage form gaskets and
seals
SECTION 25 - FRONT AXLES
CAUSE
Excessive gear load compared to
the one foreseen
Incorrect gear adjustment
(excessive backlash)
Pinion nut loose
Load bump
Incorrect gear adjustment (insuffi-
cient backlash)
Pinion nut loose
Insufficient lubrication
Contaminated oil
Incorrect lubrication or depleted
additives
Worn out pinion bearings that
cause an incorrect pinion axle
backlash and wrong contact
between pinion and ring
Prolonged functioning at high
temperatures
Incorrect lubrication
Low oil level
Contaminated oil
Excessive use
Insufficient lubrication
Vehicle overloaded
Vehicle's accident
Load bump
Insufficient lubrication
Contaminated oil
Excessive use
Normal wear out
Pinion nut loose
Prolonged functioning at high
temperature of the oil
Oil gasket assembled incorrectly
Seal lip damaged
Contaminated oil
CORRECTION
Replace bevel gear set.
Follow carefully the recommended
operations for the adjustment of the
bevel gear set backlash.
Replace bevel gear set.
Follow carefully the recommended
operations for the adjustment of the
bevel gear set backlash.
Replace bevel gear set.
Follow carefully the recommended
operations for the adjustment of the
bevel gear set backlash.
Use correct lubricants, fill up to the
right levels and replace according to
the recommended program.
Replace bevel gear set.
Use proper lubrication, fill up to right
level and replace at recommended
program.
Replace bevel gear set.
Use correct lubrication, fill up to the
right level and substitute at recom-
mended intervals.
Replace axle beam body.
Replace bearings.
Use correct lubrication, fill up to the
right level and substitute at recom-
mended intervals.
Replace the gasket or seal and
matching surface if damaged.
Use correct lubrication and replace
at recommended intervals.
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