6Form479
Disassembly of the Vertical Shaft Assembly.
NOTE: Each gear drive contains several spacers. These spacers are not
interchangeable. Note the location of each spacer during disassembly to assure proper
reassembly.
1.16 Clamp the vertical shaft assembly in a heavy vise directly under the gear. Use
caution to avoid crushing the hollow vertical shaft.
1.17 Remove the drive sleeve locknut (702) using a spanner wrench or drift punch.
1.18 Bend the tab of the keyed washer out of the groove in the lower bearing locknut
(920) and remove the locknut using a spanner wrench or drift punch. Remove the
oil screw (19).
1.19 Install allthread in two holes, 180° apart, into the drive sleeve (700). Place a
spreader bar above a Porta-Power and fasten to the allthread with washers and
nuts. Pull the drive sleeve off of the shaft. Some heat may be required to make the
drive sleeve easier to remove. Be careful not to overheat the drive sleeve. Remove
the drive sleeve key.
1.20 The inner race of the thrust bearing (600) is pressed on the drive sleeve. The
thrust bearing carrier (12) can now be lifted off of the vertical shaft.
1.21 Remove the vertical spacer (450) and orient the assembly with the top of the
vertical shaft (400) up and place in a press.
1.22 If the gear is pressed on the shaft and is being replaced, press off the gear by
blocking under the gear and pressing on the end of the shaft (400). Remove the
vertical shaft gear key (910) and under gear spacer (451), if present.
If the gear is bolted to a gear mount, and the gear mount is being replaced, remove
the gear mount/gear assembly by blocking under the gear mount and pressing on
the end of the shaft (400). Remove the vertical shaft gear key (910) and under
gear spacer (451), if present.
If the gear is bolted to a gear mount, and the gear only is being replaced, remove
the bolts holding the gear to the gear mount. Do not press off the gear mount.
1.23 Remove the thrust bearing cup (600) from the thrust bearing carrier (12) with a
brass punch or a bearing puller.
1.24 Remove the thrust bearing cone (600) from the drive sleeve (700).
1.25 Insert allthread in two holes, 180° apart, in the cup adjustment plate (480). Place a
spreader bar, washers, and nuts on the allthread. Be sure to leave enough room to
place a porta-power ram between the spreader bar and the end of the shaft (400).
