17-30. TRANSMISSION ASSEMBLY FROM SUBASSEMBLIES (4L80-E) (Cont'd)
j. Front Unit End Play Check
If end play procedures are not closely followed, incorrect shim
thickness will be selected, resulting in severe damage to internal
Install dial indicator on transmission case (2) to read vertical movement on turbine shaft (5).
Press down turbine shaft (5) and pry up on output carrier (7) to eliminate slack between end of
turbine shaft (5) and stator shaft (6).
Pull up turbine shaft (5) to eliminate slack between snapring on turbine shaft (5) and
Zero dial indicator.
Pull turbine shaft (5) forward, and read dial indicator.
Selective washer controlling end play is located between pump
cover and forward clutch housing, refer to para. 17-22. If more
or less washer thickness is required to bring end play within
An oil-soaked washer may tend to discolor.
It will be necessary to measure washer for its actual thickness.
0.057-0.061 in. (1.45-1.55 mm)
0.073-0.077 in. (1.85-1.96 mm)
0.089-0.093 in. (2.26-2.36 mm)
0.105-0.109 in. (2.67-2.77 mm)
0.121-0.125 in. (3.07-3.18 mm)
Resulting travel or end play should be 0.004-0.022 in. (0.102-0.559 mm). If end play is not within
specifications, remove selective washer and install new selective washer of proper thickness.
Install seal (8) on turbine shaft (5).