10. DRIVE PULLEY/DRIVEN PULLEY/CLUTCH MXU550EXi/MXU500i Install spring collar. Spring Compressor Nut Use the special tool to install spring and spring seat, then install and tighten the nut Compressor Nut Nut Wrench to the specified torque. Torque: 7.5 kgf-m (75 N-m, 54 lbf-ft) Special tool: Driven pulley spring compressor A120E00059 Attach the block, nut, nut wrench and spring compressor to the driven pulley assembly. Place the block in a vise and secure it. Tighten the spring compressor nut and Bolt Block Nut Bolt compress the spring. Install the nut and tighten it to the specified torque with the nut wrench. Remove the spring compressor and nut wrench. 10-16