Overhaul - AOD: Disassembly: Transmission
NOTE:
See Figure
and Figure
for exploded view of internal parts, thrust washer and needle bearing locations.
- Remove torque converter. Mount transmission in a holding fixture. Remove oil pan and gasket. Remove oil filter, grommet, and gasket.
- Remove detent spring and roller assembly. Remove valve body retaining bolts and lift off valve body and gasket. Note bolt positions for reassembly.
- Remove 2-3 accumulator assembly, low-reverse servo assembly, and overdrive servo assembly by pushing down on servo covers and removing retaining snap rings. Note length of low-reverse servo piston rod for reassembly reference. See Figure
.NOTE: Length of low-reverse piston rod may vary. Three possible rod lengths are available.
- Remove direct drive shaft by pulling it straight out from case. See Fig 1 . Remove pump body retaining bolts. Remove pump from case using 2 slide hammers installed in opposite pump retaining bolt holes. Remove pump-to-case gasket.
- Grasp turbine shaft and pull intermediate clutch pack, intermediate one-way clutch, reverse clutch, and forward clutch from transmission case as an assembly. Disconnect overdrive band from anchor pins and remove band from case.
- Remove forward clutch hub and No. 3 needle bearing as an assembly. Remove forward sun gear, No. 5 needle bearing, reverse sun gear and drive shell, and No. 4 needle bearing from case as an assembly.
- Note position of center support snap ring tangs for installation reference. Remove snap ring. Using a screwdriver, pry anti-clunk spring from between center support and case. Prior to removal, note position of anti-clunk spring to ensure it is reinstalled correctly.NOTE: Anti-clunk spring is not called out separately but is part of assembly No. 9 in Figure .
- Remove center support and planetary carrier from case as an assembly. See Fig 2
. Remove reverse band from case. If direct clutch hub did not come out with planetary carrier, remove it from direct clutch.CAUTION: If transmission is positioned with output shaft pointing up, DO NOT allow shaft assembly to fall through case when governor is removed.
- Remove retaining bolts and slide extension housing from transmission. Remove and discard housing-to-case gasket. Remove retaining snap ring and slide governor assembly off output shaft. See Figure . Remove governor drive ball from output shaft.
- Remove output shaft, ring gear, and direct clutch as an assembly through front of case. Remove output shaft No. 9 needle bearing from rear of case. Remove intermediate clutch pack from one-way clutch. Remove reverse clutch assembly from forward clutch assembly. See Fig 3 .