Flywheel RUNOUT

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Check flywheel runout whenever misalignment is suspected. Flywheel runout should not exceed 0.08 mm (0.003 in.). Measure runout at the outer edge of the flywheel face with a dial indicator.

Common causes of runout are:

heat warpage
improper machining
incorrect bolt tightening
improper seating on crankshaft flange shoulder
foreign material on crankshaft flange

Minor flywheel scoring can be cleaned up by hand with 180 grit emery or with turning equipment. Remove only enough material to reduce scoring (approximately 0.001 - 0.003 in.). Heavy stock removal is not recommended. Replace the flywheel if scoring is severe and deeper than 0.076 mm (0.003 in.).

Clean the crankshaft flange before mounting the flywheel. Dirt and grease on the flange surface may cock the flywheel causing excessive runout. Use new bolts when remounting a flywheel and secure the bolts with Mopar© Lock And Seal or equivalent. Overtightening can distort the flywheel hub causing runout.