TM 9-2320-280-34P
17-14. TRANSMISSION DISASSEMBLY INTO SUBASSEMBLIES (4L80-E) (Cont' )
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i. Front End Play Check (Measured)
CAUTION
If end play procedures are not closely adhered to, incorrect
shim thickness will be selected, which may result in severe
damage to internal transmission components.
1.
Turn transmission case (3) with turbne shaft (1) vertical.
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2.
Set dial indicator to read turbine shaft (1) vertical movement.
3.
Press down turbine shaft (1) and pry up output carrier to remove rear end play.
4.
Lift turbine shaft (1) with light force to remove slack between snapring (2) on turbine shaft (1) and
overdrive carrier (4).
5.
Index dial indicator to read " ero."
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6.
Pull up turbine shaft (1) and hold up overdrive carrier (4). Use enough force (at least 20 lb (9.1 kg)) to
lift front parts. Read amount of movement on dial indicator.
7.
Record this value for use in reassembly. Proper end play is 0.004-0.022 in. (0.102-0.559 mm).
8.
Remove dial indicator and pry tool.
j. Rear Unit End Play Check (Measured)
1.
Turn transmission case (3) with output shaft (5) horizontal.
2.
Set dial indicator to read end movement of output shaft (5).
3.
Push output shaft (5) into transmission case (3) and " ero"dial indicator.
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4.
Pull output shaft (5) out of transmission case (3) and read amount of movement on dial in icator.
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5.
Record this value for use in reassembly. Proper end play is 0.005-0.025 in. (0.127-0.635 mm).
6.
Remove dial indicator.
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