H4CH-22-C e Parts Services Repair ServicesField and Main Helical gearboxes H4

Flender/Flender Gear Units/Helical gearboxes H4

h class 1.9 Nm 8 3 2 5 1 7 2 9 1 1 2 1 1 1 3 1 1 2 3 2 The shrink disk has been identitymarked on the outer ring (. In case of contacting Siemens this identification must be referred to. For safety reasons, protective cover should be mounted to prevent contact! This cover must be applied after completion of all works on the shrink disk. Only the complete shrink disks supplied by the manufacturer may be used. Combining components from different shrink disks is not permitted. Tightening the fastening bolts using an impact screwdriver is not permitted! 6.9.2 Demounting the shrink disk Remove the protective cover. Remove any rust deposits from the shaft and the hollow shaft. Under no circum stances must the tensioning bolts be unscrewed one after the other. Undo all tensioning bolts one after the other by approx. 1/4 turn. The stored energy of the outer ring is slowly loosened during disassembly via the bolts to be loosened. In order that this is carried out correctly, the procedure described here must be carefully adhered to! All tensioning bolts should now be further loosened one after the other by approx. 1 turn. The outer ring should now release of its own accord from the inner ring. If this is not the case, the outer ring can be detensioned with the forcing threads. To this purpose screw some of the adjacent fastening bolts into the forcing threads. The now releasing outer ring is braced against the remaining bolts. This operation must be carried out until the outer ring completely releases of its own accord. The shrink disk is to be secured against axial shifting. Draw the stub shaft out of the hollow shaft. Pull the shrink disk off the hollow shaft. For transporting and lifting the shrink disk it may be required to use suitable lifting device! 7 / 1BA 5 en 0/2.9.3 Cleaning and greasing the shrink disk Only dirty shrink disks must be disassembled and cleaned. Inspection of all parts for any damage. Damaged parts must be replaced with new one