Eaton Endurant, Руководство по обслуживанию

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2019.04.4
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TRSM0950 Appendix | Inspection Precautions
Inspection Precautions
Before reassembling the transmission, check each part
carefully for abnormal wear, excessive wear or damage to
determine if the part is suitable for reuse. When replace-
ment is necessary, use only genuine Eaton Transmission
parts to assure continued performance and extended life
from your unit.
Since the cost of a new part is generally a small fraction of
the total cost of downtime and labor, avoid reusing a ques-
tionable part. This could lead to additional repairs and
expense soon after assembly. Consideration should also be
given to the unit's history, mileage, application, etc. when
determining the reuse or replacement of any transmission
part.
Bearings
• Wash all bearings in clean solvent. Check balls,
rollers and raceways for pitting, discoloration and
spalled areas.
• Replace bearings that are pitted, discolored,
spalled or damaged during disassembly.
• Lubricate bearings that are not pitted, discolored,
or spalled and check for axial and radial clearances.
• Replace bearings with excessive clearances.
• Check bearing fit. Bearing inner races should be
tight to shaft; outer races slightly tight to slightly
loose in case bore. If the bearing spins freely in the
bore the case should be replaced.
Bearing Covers
• Check covers for wear from thrust of adjacent bear-
ing. Replace covers damaged from thrust of bear-
ing outer race.
• Check cover bores for wear. Replace those worn or
oversized.
Gears
• Check gear teeth for frosting and pitting. Frosting
of gear teeth faces presents no threat of transmis-
sion failure. Often in continued operation of the
unit, frosted gears “heal” and do not progress to
the pitting stage. In most cases, gears with light to
moderate pitted teeth have considerable gear life
remaining and can be reused, but gears in the
advanced stage of pitting should be replaced.
• Check for gears with clutching teeth abnormally
worn, tapered, or reduced in length from clashing
during shifting. Replace gears found in any of these
conditions.
• Check axial clearance of gears.
All Parts
• Check all parts for cracks and breaks.
• Replace damaged parts.
Oil Seals
• Check oil seals. If sealing action of a lip has been
destroyed, replace seal.
O-Rings
• Check all O-rings for cracks or distortion. Replace if
worn.
Reverse Idler Gear Assemblies
• Check for excessive wear from action of roller bear-
ings.
Sliding Clutches
• Check all shift yokes and yoke slots in sliding
clutches for extreme wear or discoloration from
heat.
• Check engaging teeth of sliding clutches for partial
engagement pattern.
Splines
• Check splines on all shafts for abnormal wear. If
sliding clutch gears, companion flange, or clutch
hub has wear marks in the spline sides, replace the
specific shaft affected.