Lubrication
1. The most economical way to maintain a jib crane and keep it in good operating condition is to
lubricate all moving parts regularly.
2. Regular inspection of all parts should be made and all loose parts should be adjusted. Parts
that become worn should be replaced immediately.
3. The lubrication interval varies with the use of the machine. A crane operating 24 hours a day, 7
days a week, should demand lubrication once a week. Whereas a standard duty crane, operat-
ing eight hours a day on a five day week should be lubricated once every two to three weeks.
Cranes under a standby classification, being used once or twice a month, should be lubricated
at least once every six months.
4. The actual interval from one lubrication to the next depends entirely upon the type and length
of operation to which the crane is subjected. These factors are variable and sometimes cannot
be definitely determined. In this case, the crane operator or maintenance engineer would de-
termine when the crane should be lubricated.
5. The roller bearings on the jib crane require lubrication. They are serviced by pressure type fit-
tings.
6. The recommended lubricants for these bearings are:
a. Texaco Marfax No. 0 for below 32 degrees F
b. Texaco Marfax No. 1 for above 32 degrees F
7. If Texaco products are not available, equivalent lubricants are satisfactory.
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