TM 5-3810-307-10
5-12.10
operation.
5-12.11
Lifting on Rubber.
CAUTION
Ensure that all four tires are inflated to 110 psi (758
kPa) before attempting any lift on rubber.
a.
When lifting a load on rubber (i.e. without extending outriggers), review all
safety precautions for operating on rubber.
b.
Study job site and determine best location for crane.
c.
Get weight of load, measure load radius and check On-Rubber Capacity
Chart (refer to Appendix E) to determine boom length and angle.
d.
Position crane on level surface.
e.
Perform suspension lockout system functional check, refer to paragraph 5-
f.
Perform a dry run with no load, following Preload Check procedure.
g.
Rig load and attach to hook.
h.
Be sure everyone is clear of the crane and the work area.
i.
Raise load a few inches and hold it there. Check that hoist brake is working
correctly. Check for settling of tires. Watch bubble level and alignment of
the load line with boom. If there is any sign of instability, put the load down
and move crane to a flatter surface.
5-12.12
Pick and Carry Operations.
WARNING
Exercise extreme caution when picking and carrying
a load. Ensure that all four tires are inflated to 110
psi (758 kPa).
a.
Perform suspension lockout system functional check prior to any pick and
carry operation, refer to paragraph 5-12.13.
b.
When performing pick and carry operations or operating on sloping ground,
carry loads much less than capacity. Keep load low and uphill from crane.
Swing load only to keep the load uphill, and always place loads on high side.
c.
When traveling with a load, boom should be carried in line with direction of
motion.
5-104
