Maintenance
Up/Down System
Maintenance
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4-4
4
See Figure 4-5.
2.
Lubricate the up/down acme screw with a rolling bearing lubricant (e.g.
Ł
T4S or Shell Extreme Pressure
Grease) every six months. Apply the lubricant to the grease fitting in the nut housing. Lubrication may be
required sooner if environmental conditions require it. If the lubricant appears to have dispersed or is dry or
crusted, reduce the maintaince interval.
The up/down screw bellows should completely cover the screw. If either of the bellows is damaged, replace
it immediately. Before installing the new bellows, clean the up/down screw and nut thoroughly with extraction
naphtha. The acme screw nut (Part No. 094243) should be replaced if the end play is larger than 1.25 mm.
3.
Check the up/down belt tension after the first 20 hours of operation and every 100 hours thereafter.
FIG. 4-6
150126B
Upper Limit
Switch
Up/Down
Screw
Bellows
Lower Limit
Switch
Lower Bearing
Housing
100
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