A25317-A-1119
Owner's Manual for Thern 5FT20 and 5FT25 Captain Series Stationary Davit Cranes
page 13
Table 2 – Inspection Checklist
checked boxes indicate damage or problem in need of repair
damages
problems
general
finish weathered, flaking, otherwise damaged
equipment not properly lubricated
parts cracked, bent, rusted, worn, otherwise damaged
unusual noises, other signs of malfunction
foundation
loose, unstable, otherwise damaged
not level - boom swerves
fasteners
stripped threads, bent, worn, otherwise damaged
loose, not tightened to the proper torque
boom assembly
holes worn, distorted, or otherwise damaged
does not rotate freely
winch assembly
gears, bearings, and other parts worn, otherwise damaged
winch jerks or hesitates under load
brake corroded, cracked, worn, otherwise damaged
brake does not operate properly
sheaves
holes worn, distorted, or otherwise damaged
does not rotate freely
wire rope
bent, crushed, otherwise damaged
wire rope loosely or unevenly wound
broken wires, see Figure 5
replace if more than 6 wires in one lay,
number per strand =
or 3 wires in one strand in one lay, are broken
number per lay =
diameter reduced, see Figure 7
replace if diameter is excessively worn
diameter =
end connections
corroded, rusted, worn, otherwise damaged
not securely attached
load hook
twisted, bent, worn, otherwise damaged, see Figure 6
replace if twist is 10 degrees or more
replace if throat width is 15% larger than nominal
replace if thickness is 10% less than nominal
hook latch fails to close when released
twist =
throat width =
thickness =
labels and plates
dirty, illegible, otherwise damaged
loosely attached or missing
comments:
authorized signature:
date
