Check out our video on truck flywheels…
Flywheels determine the proper setting of the clutch. In this video, we show you exactly how to measure the flywheel to see if we need a spacer, or a first over-sized or a second over-sized when it comes to the brake.
On 15 inch Flywheels, get a flat surface to measure. Measure from the back of a flywheel housing, down to the actual face of the flywheel. A brand new flywheel has 2 1/2 inches.
We also go over when you should use a flywheel and when not to. Using an FG 1 Flywheel gauge, you want to measure clearance from the surface area to the top of the flywheel mounting bolt. If your clearance is right at or less than 5/16ths, you need to replace your flywheel. Keep an eye out for the series 60 Detroit Flywheels, which are very thin straight from the factory. Also on the Catapiller Engines, the 346 C15 and C16, were built before 2004 they have a thicker bolt head and thicker washer.
Next thing you want to watch out for with flywheels, is that the pilot bearing is tight in the board, it can cause misalignment if it is loose.
You must surface your flywheel to get the warranty on your clutch. Watch the video for more details on how to measure, and parts to watch out for and use.