Section 0 - Engine Disassembly and Assembly - Group 00 Engine Assembly (0-02) M11 Page 0-145 Alternator Drive Belt (Bus Applications) - Installation Install a new belt over the pulleys while holding the ten- sioner back. Be careful not to damage the belt while working it over the flanged pulleys. Release the tensioner and remove the breaker bar. Belt drive systems equipped with an automatic belt ten- sioner cannot be adjusted. A belt tension gauge will not give an accurate measure of the belt tension. The auto- matic belt tensioner is designed to maintain proper belt tension over the life of the belt. Only visual inspection of the tensioner is required.
Fan Pulley and Fan - Installation NOTE: Use six capscrews (3/8-16 x 1.25) to install the pulley on the fan hub if a fan is not installed. Install the fan on the fan clutch assembly if equipped. Tighten the mounting nuts to the fan clutch manufactur- er’s specifications. Install the fan assembly and pulley on the fan hub with six minimum SAE grade 8 capscrews (3/8-16). NOTE: Capscrew length will vary with the type of fan as- sembly used. Torque Value: 47 [35 ft-lb] Fan Belt - Installation Install a new belt on the crankshaft and fan drive pulleys. Use belt tension gauge, Part No. ST-1293, to measure the belt tension.
Turn the idler pulley adjusting screw clockwise to in- crease the belt tension. Refer to the belt tension chart in Section V for the correct belt tension for your application. Tighten the idler pulley shaft locknut. Torque Value: 190 [140 ft-lb]