Section 8 - Cooling System - Group 08 Fan Idler Pulley - Cleaning and Inspection for Reuse (8-05) M11 Page 8-33 Fan Idler Pulley - Cleaning and Inspec- tion for Reuse (8-05) Cleaning Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam will cause serious personal injury. Use solvent or steam to clean the fan idler pulley exterior. Dry with compressed air. Inspection Visually inspect the idler assembly for cracked, chipped or broken pulley grooves. Turn the idler pulley by hand to inspect the shaft for freedom of rotation. Measure the idler pulley end clearance.
Pulley End Clearance mm in 0.05 MIN 0.002 0.25 MAX 0.010 If damaged parts are found, the pulley does not rotate freely or the pulley end clearance is not within the speci- fications, the idler pulley must be replaced or rebuilt. Refer to Fan Idler Pulley - Rebuild (8-06). Fan Idler Pulley - Rebuild (8-06) Disassembly Install the fan hub support in a vise with brass jaws. Remove the idler pulley from the fan hub support.