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automatic? remove transmission and torque converter then remove flexplate (auto has a flexplate not a flywheel if mauel transmission remove gear box and clutch then remove flywheel
You have to remove the transmission from the vehicle, then remove the flexplate from the crankshaft. The seal is directly behind the flexplate.
You could remove the transmission and pour it out of the rear driveshaft seal. But I would recommend dropping the pan.
You will have to slide / move the transmission back enough to get your hand up in between the flywheel and toqure converter so you can remove the flywheel bolts. You do not have to compleatly remove the transmission. I do it all the time.
Remove the transmission and starter. Unbolt the flexplate from the crank. While you're at it, replace the rear main seal. Replace the flexplate and torque bolts to manufacturer's specs.
The Astro does not have a flywheel, it has a flexplate. To remove it you have to remove the transmission so you can unbolt it from the crankshaft.
You remove the transmission, and the flexplate(flywheel) to access the rear main seal.
REmove and mark with masking tape all hoses and wires and linkage that connects to the engine. Mark where it came from on the engine with an identical marking for ease of reinstallation. You will need to remove the bolts that hols the transmission to the engine and under the flexplate cover remove the bolts that hold the torque converter or clutch to the flexplate. Remove the engine mount bolts. The engine should be ready for removel, but be sure the tranny is supported somehow so it does not fall.
You have to drop the transmission or pull the engine. remove the flexplate and oil pan.
Underneath the car,located on or near the bottom of the engine nearest the transmission.Should be 2 bolts to remove the inspection cover or you may need to remove the starter and access the flywheel on a manual transmission vehicla or a flexplate on a automatic transmission vehicle.So you either have a flywheel or flexplate,not a crankshaft sprocket.Good luck.
usaully by unbolting it from the engine and dropping it down, what year and what engine?
Easiest way is to remove the bed. Then you can remove it without dropping the tank.