Mauldin M415XT MAINTAINER - Axle Troubleshooting and Repair

2/3/2020
Page 74 of 78
Calder Brothers Corporation
Model: M415XT Maintainer
M415XT
Axle Service
3. TROUBLESHOOTING
3.1. TROUBLESHOOTING
PROBLEM
CAUSE
ACTIONS
Bevel gear:
Breakage towards the
external
end of the gear tooth
1. Gear load is much
greater than expected
2. Incorrect gear
adjustment (too much
clearance)
3. Pinion ring nut has come
loose.
Replace the bevel gear. Follow
the steps carefully that are
recommended for adjusting
gear tooth and pinion clearance
and for detecting tooth
impression.
Bevel gear:
Breakage towards the internal
end of the gear tooth
1. Knocked by the load
2. Incorrect gear
adjustment (too little
clearance)
3. Pinion ring nut has come
loose.
Replace the bevel gear. Follow
the steps carefully that are
recommended for adjusting
gear tooth and pinion clearance
and for detecting tooth
impression.
Bevel gear:
Pinion and gear teeth
are worn or scored
1. Insufficient lubrication
2. Lubricant is dirty
3. Wrong lubricant or with
impoverished additives
4. Pinion bearings are worn,
causing incorrect axial
clearance of the
pinion and
contact between
pinion and
gear
Replace the bevel gear.
Replace the pinion’s
bearings, making sure the
gear, pinion and bearing
preloads are arranged
correctly.
Use the correct lubricant, fill
up to the right level and
change it at the intervals
recommended.
Bevel gear:
Pinion and gear teeth
overheated. See if the
colour of the gear teeth has
altered
1. Prolonged operation at
excessive temperatures.
2. Wrong lubricant
3. Low oil level
4. Lubricant is dirty
Replace the bevel gear. Use
the correct lubricant, fill up
to the right level and change
it at the intervals
recommended.
Bevel gear:
Pitting of pinion teeth
1. Extremely intense use
2. Insufficient lubrication
Replace the bevel gear. Use
the correct lubricant, fill up
to the right level and change
it at the intervals
recommended.
Bevel gear:
Breakage due to fatigue of the
pinion tooth (check for
characteristic fracture lines)
1. Excessive use
2. Continuous overload
Replace the bevel gear.