ALLISON 1000 & 2000 PRODUCT FAMILIES
GENERAL INSPECTION GUIDELINES FOR CLUTCH PLATES Oil grooves appear shallow or worn away measure plate thickness and groove depth.
Spline teeth battered and worn - may be an indication of driveline issues. Replace clutch plates and check driveline.
D. Spline Teeth
C. Oil Groove Depth
A. Inspect friction plate contact faces and splines for excessive wear, damage and coning. Inspect the plates for burrs, pitted faces, cracks, distortion and damaged spline teeth.
C. Measure friction plate oil groove depth. Replace any plates that are not within Service Manual SM3191EN minimum groove depth specification.
B. Measure friction plate
excessive wear and battering. Replace the clutch plate if damage cannot be repaired using a soft stone or crocus cloth. Replace the
thickness and coning. Reference the Service Manual SM3191EN for minimum thickness and maximum coning specifications. Do not reuse friction plates that do not meet published specifications. If reused plates are slightly coned (within specification), make sure each plate is stacked with the cone facing the same direction.
D. Inspect spline teeth for
B. Clutch Plate Thickness and Coning
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ALLISON
TRANSMISSION
2005 General Motors Corporation.
TECHNICIANS’
GUIDE
clutch plate if spline teeth are broken or missing. NOTE: Anti-freeze (glycol) and/or water will adversely affect the bonding agent between the friction material and steel core. Replace any friction plates which have been exposed to water and/or glycol.Reference SIL 18-TR-98, Rev. A, for details.
(continued)
Coned Plate
Flat Plate Thickness
A. Contact Surface
Check Using Feeler Gauge
