Flex plate is the term for a flywheel mated with an automatic transmission.
REMOVAL & INSTALLATION
See Figure 1
The ring gear is replaceable only on engines mated with a manual transmission. Engines with automatic transmissions have ring gears which are welded to the flex plate.
- Remove the transmission and transfer case.
- Remove the clutch, if equipped, or torque converter from the flywheel. The flywheel bolts should be loosened a little at a time in a cross pattern to avoid warping the flywheel. On trucks with manual transmissions, replace the pilot bearing in the end of the crankshaft if removing the flywheel.
- The flywheel should be checked for cracks and glazing. It can be resurfaced by a machine shop.
- If the ring gear is to be replaced, drill a hole in the gear between two teeth, being careful not to contact the flywheel surface. Using a drift or a cold chisel, tap downward on the ring gear near welded areas to break any weld material. Tap around the ring gear until it comes off the torque converter.