Fan Idler Pulley - Rebuild (8-06) Section 8 - Cooling System - Group 08 M11 Page 8-36 Cleaning Use solvent to clean the idler pulley parts. Dry with com- pressed air. Inspection The new idler pulley roller bearing set consists of two bearings, two races, an inner spacer and an outer spacer. To prevent future idler pulley failure, the bearings must be replaced as a complete set and not individual parts. Bear- ings and races that are to be used again must also be kept in sets. Visually inspect the bearing races for pitting or scoring. Visually inspect the bearings for freedom of movement or damage. Measure the outside diameter of the seal (1) and bearing (2) surfaces of the idler pulley shaft.
Idler Pulley Shaft O.D. Point mm in 1 32.975 MIN 1.2982 33.000 MAX 1.2992 2 19.037 MIN 0.7495 19.050 MAX 0.7500 Visually inspect the idler pulley bore for scoring, nicks or scratches.