APPENDIX A CRANES

TB 43-0142

APPENDIX A

CRANES

A-1. Daily Inspection.

a. The following items shall be inspected daily or prior to use:

(1) All controls and operating mechanisms for maladjustments, excessive wear, or

contaminated by leaking lubricants or foreign material.

(2)

All safety devices for malfunction.

CAUTION

Raise and lower the hoisting mechanism very slowly when

testing limit switches.

(3) All installed hoist and travel limit switches should be checked for failure by raising and

lowering throughout the full range of the lifting device with no load other than that of the hoisting

mechanism. The hoisting mechanism should be raised and lowered very slowly when testing limit

switches.

(4) Air or hydraulic systems components for deterioration or leakage. Hydraulic fluid

leakage is classified as follows:

(a) Class I. Seepage of fluid (as indicated by wetness or discoloration} not great enough

to form drops.

(b) Class II. Leakage of fluid great enough to form drops but not enough to cause drops

to drip from the item being checked/inspected.

(c) Class III. Leakage of fluid great enough to form drops that fall from the item being

checked/inspected.

(5) Crane load hooks for deformation, cracks, wear, damage or malfunctioning latch and

hook attachment. Refer to paragraph A-2.b. for criteria.

(6) Electrical apparatus for malfunction, signs of excessive deterioration, dirt, and moisture

accumulation.

(7) All rope and cables for improper rigging and excessive wear, or damage; refer to

(8) Hoist chains for excessive wear, twist, distorted links, stretch, etc.; refer to Appendix C,

b. When any of the above items are found to exist, further operations of the crane will be

discontinued until it has been corrected or determined to present no hazard. An exception is that

equipment operation is allowable with Class I or II hydraulic leaks provided consideration is given to

the fluid capacity of the equipment and fluid levels continue to be checked as normally required. This

exception does not apply to leakage of hydraulic brake systems.

A-2. Monthly Inspections. Monthly inspections shall include the items of paragraph A-1 above

and the following:

a. Wire Rope Make a thorough documented inspection of all ropes. Particular attention shall

be given to inspection of rope sections subject to rapid deterioration, such as the following:

A-1