R2.8 CM2220 R101B Transmission Interface and Mounting Section 1 - Installation by Subsystem Page 1-7 Figure 2 - Flywheel Specifications 1 Crankshaft centerline 2 Mounting hole spacing - 30 degrees, 4 places 3 Mounting hole spacing - 15 degrees, 8 places 5 Pilot holes - 2 equally spaced, on 320 mm [12.6 in] diameter 4 Pilot hole to mounting hole spacing - 7.5 degrees, 2 places 6 Clutch pressure plate mounting holes, 12 - M8 x 1.25, on 320 mm [12.6 in] diameter. To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com