Troy-Bilt CSV 070 Service Manual - Page 14

Self-propelled Chipper Shredder Vacuum 4.11. Block the impeller with a chock, to keep it from rotating. Using a 9/16" socket, remove the bolt, lock washer, and flat washer securing the impel- ler to the crankshaft. See Figure 4.11. Bolt Impeller 4.15. In servicing the impeller: • The pulley hub can be pried off and replaced or reused. • The Chipper blade can be replaced with out removing the impeller. Refer to CHIPPER BLADE REMOVAL section of the manual. • The roll pins secure the clevis pins that mount the flails. The roll pins are shielded by pin clips. 4.16. Pull belt though hole surrounding the crankshaft to remove it. Drive belt Chock Figure 4.11 4.12. Lubricate the impeller removal tool (part number 753-0638). Thread the tool into the crankshaft until the impeller assembly can easily slide off the crankshaft. NOTE: Push the belt forward to create slack, releasing the belt from the groove in the pulley hub. 4.13. Inspect impeller, pulley hub, chipper blade, and flails for any damage, replace as needed. Pulley hub Figure 4.16 4.17. Install a new belt though the hole surrounding the crankshaft. NOTE: When installing impeller make certain belt is seated in the pulley groove. NOTE: Torque the impeller bolt to 375 to 425 inch pounds. Chipper blade Figure 4.13 4.14. Do not use an impeller that shows any signs of damage. A burst hazard will result. 10