Annual Inspections

TB 43-0142

Sections in contact with saddles, equalizer sheaves, or other sheaves where rope

travel is limited;

Sections of rope at or near terminal ends; sections subject to reverse bends;

Sections normally hidden during daily visual inspections; and

Repetitive pickup points on drums.

Presence of any of the following shall be cause for removal from service:

(1) Broken Outside Wires. Those sections of the rope subjected to reverse bends and

operation over small diameter drums or sheaves require particularly close attention; refer to

Appendix C, paragraph C-2.a.(1) for criteria.

(2) Reduction of Rope Diameter. Measure for reduction of rope diameter. Several

measurements shall be taken at locations subject to the most stress and wear; refer to Appendix C,

paragraph C-2.a.(2) for criteria.

(3)

Worn Outside Wires. Refer to Appendix C, paragraph C-2-a.(3) for criteria.

(4) Corroded, Broken, or Frayed Wires at End Connections. Refer to Appendix C,

paragraph C-2.a.(4) for criteria.

(5)

Corroded, cracked, bent, worn, improperly sized, or improperly applied end connection.

(6)

Severe kinking, crushing, cutting, or unstranding.

(7) Evidence of damage due to welding arc or other heat sources.

(8) No less than two full wraps of rope remaining on the hoist drum is permitted when the

hook is in it's extreme low position with the boom in it's most upright position. The rope end shall be

securely attached to the drum by the clamp or socket arrangement approved by the crane or rope

manufacturer. The same limit applies to the boom hoist drum rope when the boom is in its extreme

low position.

b. Hooks. Perform a documented inspection of crane hooks for cracks, throat opening of more

than fifteen percent in excess of normal, more than ten degree twist from the plane of the unbent

hook or wear exceeding ten percent of the original dimensions. Remove hooks from service if they

meet one or more of the above criteria. Remove hooks having any visual evidence of an increase in

throat opening, twisting, or deformation of any sort from service when the original dimensions of the

hook are not known.

c. Hoist Chains. Perform documented inspection of hoist chains for excessive wear, twist,

distorted links, or stretch beyond manufacturer's recommendation. Refer to Appendix C, paragraph

C-2.b., for criteria.

A-3. Annual Inspections. Complete inspection of cranes shall be performed at the intervals

defined in paragraph 4. These inspections should include the items of A-1 and A-2 above,

requirements of any applicable technical manuals, and the following:

a. General. Check for:

(1)

Proper marking to include load ratings and date of next periodic inspection.

(2)

Evidence of mishandling and/or damage.

(3)

Deformed, cracked, broken, missing or corroded members in crane structure and boom.

(4)

Loose bolts or rivets.

(5)

Cracked or worn sheaves and drums

A-2