Meritor MTC Series Maintenance Manual page 27

• Cracks along the internal journal of the input gears.
Figure 6.8
• Deep gouges or metal transfer along the input gear journals.
DEEP GOUGES
Figure 6.9
• Chipped or severely worn shifting splines on the input gears.
• Chipped or cracked splines on the output gears.
Shafts
Inspect the input and output shafts for damage to the gear journals,
shifting splines, threads and gear retaining splines. If any of the follow-
ing conditions exist, replace the shaft.
• Deep gouges or metal transfer along the input shaft journals.
METAL
TRANSFER
Figure 6.10
• Chipped or worn shifting splines on the input shaft.
Printed in USA
CRACK
Copyright Meritor, Inc., 2021
6 Prepare Parts for Assembly
• Chipped or cracked splines on the output shaft.
Figure 6.11
• Cracks along the yoke splines, bearing journal abutments, or
cross-drilled holes. Magnafl ux may be necessary to see small
cracks.
PTO Components
Inspect the PTO housing, shaft, taper bearings, shift collar, shift fork,
and sensors for damage. If any of the following conditions exist,
replace the component.
• Cracks in the housing.
• Cracks along the shaft yoke spline or ball bearing abutment.
Magnafl ux may be necessary to see small cracks.
• Chipped or cracked shifting splines on the shift collar or shaft.
• The rollers of the taper bearings do not roll easily or lack
lubrication. The raceway is cracked or dented.
• Cracked or missing tangs on the shift fork arms.
• Discolored or worn shift forks and sliding clutch slots.
• The sensor ball sticks or does not return to its resting position.
The sensors do not complete a circuit when tested with a volt-
ohm meter (VOM).
High & Low Shifting Components
Inspect the shift collar, shift fork, shift shaft, retaining pins, shift cylin-
der, piston, o-ring, and case halves for damage. If any of the following
conditions exist, replace or repair the component.
• Cracked or missing tangs on the shift fork arms.
• Chipped or cracked shifting splines on the shift collar.
• Cracks or deep gouges on the shift shaft.
• The retaining pins in the shift shaft are not 0.100" (2.54 mm)
above the shaft diameter. Remove and set to the correct position.
• Gouges on the inside of the shift cylinder.
• Torn or feathered areas on the o-ring.
• Deep gouges in the shifting bores of the case halves.
CHIPPED
SPLINES
MM-2034 / Issued 02-21
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