I know its not a flywheel but I just replaced the rear main seal on my automatic 1990 240 DL and I did not index the flexplate, everything runs just fine after the work was done.
Hope it helps.
To change the clutch on a 1989 Toyota Corolla, start by disconnecting the battery and removing the transmission. This involves lifting the car, removing the wheels, and detaching the drive shafts. Once the transmission is out, unbolt the old clutch from the flywheel, clean the flywheel surface, and install the new clutch disc and pressure plate. Finally, reassemble the transmission and drivetrain components, ensuring everything is properly aligned and secured.
flywheels are not adjustable
On a 1989 Volvo 240, the control module, often referred to as the engine control unit (ECU), is typically located under the dashboard on the driver's side. It can be found mounted to the left of the steering column, behind a plastic cover. Accessing it may require removing the cover for visibility and adjustment.
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Begin by removing the positive cable from your 1990 Volvo 240 battery. Remove the cables from the front of the starter motor. Remove the starter motor retaining bolts. Reverse the process to install your new starter motor.
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75 Ft LBS.
Flywheel clutch face surface facing out and line the bolt holes up. That's the only way it can go.
No
Flywheel must be torqued to 105 ft/lbs. Clutch and pressure plate torqued to 22 ft/lbs.
In the 1989 Volvo 740 GL with a Bosch system it is located just above the steering column on the dash.
In a 1989 Volvo 240, the flasher relay is typically located under the dashboard, near the steering column. It can be found by removing the cover or panel beneath the steering wheel. Look for a small, cylindrical relay that may be mounted in a socket or held in place by clips. If you're having trouble locating it, consulting the vehicle's service manual can provide additional guidance.