ALLISON 1000 & 2000 PRODUCT FAMILIES Park pawl equipped (left) and non-park pawl carriers with P3 Sun Gears installed.
P3 PLANETARY ASSEMBLY
C. Pinion Thrust Washers
E. Splines
A. Housing
Pinion Pin
P3 Sun Gear
A. Housing Pinion Pin E. Splines B. Pinion Gears B. Pinion Gears
Supersession Information
F. Park Pawl Engagement Cogs A. Inspect the carrier housing for
cracks, chips, impact damage and signs of discoloration. Replace the assembly if damage cannot be repaired using a soft stone or crocus cloth. B. Inspect pinion gears for
chipped, broken, pitted or missing teeth. Replace the assembly if damage cannot be repaired using a soft stone or crocus cloth. C. Inspect the pinion thrust
washers for damage, distortion and signs of discoloration. Replace the carrier assembly if any damage is identified. Replace the carrier assembly if any pinion gear endplay readings exceed 1.010mm (0.040 inch).
D. Pinion Needle Bearings (Internal)
P3 Sun Gear And T6 Bearing Updates Reference SIL 19-1K2K-02
D. With the planetary clean and oiled, check the pinion needle bearings by slowly spinning each pinion gear and feeling for rough spots. Replace the carrier assembly if any pinion gear has rough spots or makes noise during the spin test. E. Inspect the splines where
the output shaft indexes for Sun Gear and Bearing Updates step wear, twisting, chips, Enable Increased Capacity. burrs and signs of battering. Replace the assembly if F. Inspect the park pawl cogs for damage cannot be repaired using a bending, distortion, step wear, soft stone or crocus cloth. scoring, chips, and rounded edges. Replace the assembly if any damage is detected. ALLISON
TRANSMISSION
TECHNICIANS’
GUIDE
2005 General Motors Corporation.
33