d. Wear exceeding 10 percent of the original dimension
e. Inoperable hook latch
Annual. Perform magnetic particle, die penetrant, or other nondestructive test in addition to visual
inspection. Lubricate swivel and sheave bearings as required.
4. Braking Systems
Daily. Check operation of bridge and trolley brakes and look for leaks in hydraulic lines. Before
proceeding with a lift, lift load a few inches and check that hoist brakes are holding. Refer to appendix U
of Reclamation Safety and Health Standards for information on brake tests for mobile cranes.
Annual. Check brake lining for excessive wear and oil contamination. Check brake drums for scoring.
Check operating mechanisms for wear or damage, adequate lubrication, and proper adjustment. Repair or
replace parts as required. Check operation of load control braking system.
5.Wire Rope or Load Chain
Daily. Check wire rope to ensure there is no slack in drum or load block and that reeving is proper. Check
load chains for worn or damaged links. Check that chain feeds into and away from sprockets smoothly.
Annual. Check wire rope for reduction of diameter, broken wires, wear, corrosion, kinking, crushing,
unstranding, and other damage. Pay close attention to end connections and sections normally hidden.
Refer to the Rigging Manual or the rope manufacturer for recommendations for replacement of the wire
rope. Apply lubrication, if required, according to manufacturer's recommendations.
Examine chain for gouges, nicks, weld splatter, corrosion, wear, and distorted links. Refer to the
Manual or the chain's manufacturer for guidelines on the replacement of the chain.
6. Crane Rails, Supports, and Stops
Annual. Check rails for alignment and level. Check concrete rail supports for cracking or spalling and
steel supports for corrosion and loose bolts or rivets. Repair concrete as required. Tighten loose bolts and
rivets. Check that rail stops are securely fastened.
7. Hoist, Trolley, and Bridge Framework
Annual. Check bolts and rivets for tightness. Check all framework for deformation, cracks, and corrosion,
paying close attention to load bealing members and welded joints. Clean and repaint as required.
Annual. Check for looseness and proper positioning. Check for leaking of hydraulic bumpers and fill to
proper level. Check rubber or plastic bumpers for cracks or other damage. Replace or repair as required.