Toro 20330 Service Manual - Page 102

BBC / BOS / BCS 7. Again, pivot the brake plate counterclockwise and remove the BBC flywheel. 8. BBC Belt or Idler Pulley Replacement: If the BBC belt or idler pulley requires replacement, it can be done without removal of the brake plate. Remove the idler pulley capscrew and nylon locknut then pull the belt and pulley from the brake plate as an assembly. Note: The hubs of the pulley are replaceable, however, the bearing inside the idler pulley is not replaceable separately. 9. If the brake pad has reached its service life or if the brake plate has been damaged, remove the other capscrew securing the brake plate to the brake plate hub and lever and remove the brake plate assembly. The brake pad is not replaceable separately. 10. If necessary, remove the flanged head capscrew securing the brake lever and hub to the housing. CAUTION! The brake plate lever is under moderate spring-loading. Heavy gloves and eye protection are recommended when removing the brake plate lever. Note: Do not use an air wrench on the brake lever self-tapping screw as thread damage to the housing may result. 11. Remove the brake plate and hub assembly from the housing and disassemble the seal/oil impregnated bushing, the hub, self-tapping capscrew, and washer from the brake lever. Be careful not to lose the plastic bushing which fits on the end of the brake spring rod (Fig. 172). A A. Plastic bushing B Fig 172 B. Brake rod 3428-0106 12. Complete disassembly of the brake plate by removing the brake plate screws and the bearing block. 13. Remove the two bearings from the bearing block by pressing the bearings out on an arbor press. Press only on the outer race to prevent bearing damage (use an appropriately sized arbor or a 1-1/8" (28mm) socket. 14. Inspect all parts for damage and/or wear and replace as necessary. 6-16 WPM Drive Systems Manual