ALLISON 1000 & 2000 PRODUCT FAMILIES
MAIN SHAFT ASSEMBLY E. P3 Sun Gear F. Spacer D. P2 Sun Gear Main Shaft
B. Splines A. Journal and Pilot Surfaces
B. Splines
C. Oil Passages
A. Inspect the main shaft pilot
C. Oil passages must be clean and
and journal areas for scoring, burrs, nicks and signs of overheating. Replace the shaft if damage cannot be repaired using a soft stone or crocus cloth. Minimum allowable pilot outside diameter is 19.987mm (0.7869 inch). Minimum allowable diameter for the P2 bushing journal surface is 35.405mm (1.4333 inches).
unobstructed. Inspect the edges of each orifice for cracks, chips, burrs and metal fatigue. Replace the shaft if damage cannot be repaired using a soft stone or crocus cloth.
B. Inspect the splines for step
wear, twisting, chips, burrs and signs of battering. Replace the shaft if damage cannot be repaired using a soft stone or crocus cloth.
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ALLISON
TRANSMISSION
2005 General Motors Corporation.
D. Inspect the P2 sun gear for
chipped, broken, pitted and missing teeth. Inspect the internal splines for step wear, twisting, chips, burrs and signs of battering. Replace the gear if damage cannot be repaired using a soft stone or crocus cloth. E. Inspect the P3 sun gear for chipped, broken, pitted and missing teeth. Inspect the internal splines for step wear, twisting, chips, burrs
TECHNICIANS’
GUIDE
and signs of battering. Replace the gear if damage cannot be repaired using a soft stone or crocus cloth. F. Inspect the spacer for cracks. Inspect internal splines for step wear, twisting, chips, burrs and signs of battering. Inspect the thrust surfaces for nicks, burrs, scoring and excessive wear. Replace the spacer if damage cannot be repaired using a soft stone or crocus cloth.
