LATTICE BOOM CRANE REVIEW UPDATED QUESTIONS AND
ANSWERS
On lattice boom cranes with power load lowering mounted on the hoist, a heavy load should be lowered
by; - CORRECT ANSWER✅✅✅Power load lowering feature and the foot brake
A pin-connected lattice boom is being dismantled. After connecting the equalizer(bridle) to the
connecting lugs on the boom butt, which boom connecting pins should be removed first? - CORRECT
ANSWER✅✅✅Lower connection pins, located ahead of the equalizer
Using a mobile crane on a barge, the cranes load capacity ratings will be? - CORRECT
ANSWER✅✅✅replaced by a list chart
How many broken wires are permitted at the end connection of a standing pendant line before it must
be taken out of service? - CORRECT ANSWER✅✅✅1
When assembling a lattice boom on a mobile crane and using inserts of different lengths, which insert
section should be closest to the boom butt section? - CORRECT ANSWER✅✅✅10 ft
Backward stability of a mobile crane is tested in which configuration? - CORRECT
ANSWER✅✅✅Basic boom at maximum angle with no load
Boom hoist limiting device - CORRECT ANSWER✅✅✅the device that stops the boom when it nears
the cranes maximum angle
Jib Offset - CORRECT ANSWER✅✅✅jib angle to the broom
Cantilever Lenght - CORRECT ANSWER✅✅✅Amount of lattice boom to be suspended out past the
connection point of the pendants during assembly/disassembly of the boom.
Master Clutch - CORRECT ANSWER✅✅✅Majority of the friction style mobile cranes the power is
transferred to the torque converter via master clutch
ANSWERS
On lattice boom cranes with power load lowering mounted on the hoist, a heavy load should be lowered
by; - CORRECT ANSWER✅✅✅Power load lowering feature and the foot brake
A pin-connected lattice boom is being dismantled. After connecting the equalizer(bridle) to the
connecting lugs on the boom butt, which boom connecting pins should be removed first? - CORRECT
ANSWER✅✅✅Lower connection pins, located ahead of the equalizer
Using a mobile crane on a barge, the cranes load capacity ratings will be? - CORRECT
ANSWER✅✅✅replaced by a list chart
How many broken wires are permitted at the end connection of a standing pendant line before it must
be taken out of service? - CORRECT ANSWER✅✅✅1
When assembling a lattice boom on a mobile crane and using inserts of different lengths, which insert
section should be closest to the boom butt section? - CORRECT ANSWER✅✅✅10 ft
Backward stability of a mobile crane is tested in which configuration? - CORRECT
ANSWER✅✅✅Basic boom at maximum angle with no load
Boom hoist limiting device - CORRECT ANSWER✅✅✅the device that stops the boom when it nears
the cranes maximum angle
Jib Offset - CORRECT ANSWER✅✅✅jib angle to the broom
Cantilever Lenght - CORRECT ANSWER✅✅✅Amount of lattice boom to be suspended out past the
connection point of the pendants during assembly/disassembly of the boom.
Master Clutch - CORRECT ANSWER✅✅✅Majority of the friction style mobile cranes the power is
transferred to the torque converter via master clutch
