Section 1 - Cylinder Block - Group 01 Idler Gear Assembly - Cleaning and Inspection for Reuse (1-05) M11 Page 1-27 Measure the idler gear shaft outside diameter. Idler Gear Shaft O. D. mm in 59.975 MIN 2.3612 60.008 MAX 2.3625 Measure the idler gear shaft ring dowel bore inside di- ameter. Idler Gear Shaft Ring Dowel Bore I.D. mm in 19.245 MIN 0.7577 19.265 MAX 0.7585 Measure the idler gear ring dowel outside diameter. Idler Gear Ring Dowel O. D. mm in 19.217 MIN 0.7566 19.243 MAX 0.7576 Measure the idler gear thrust washer thickness in three places 120 degrees apart. Idler Gear Thrust Washer Thickness mm in 2.400 MIN 0.0945 2.470 MAX 0.0972