Kulkoni, Inc. 1-800-231-2357

Page 89 Kulkoni, Inc. v921 WARNING: NEVER EXCEED WORKING LOAD LIMIT INSPECT & MAINTAIN FITTINGS and SNATCH BLOCKS REGULARLY Fittings Fitting, including hooks, shackles, links, etc. may become worn and disfigured with use, corrosion, and abuse resulting in nicks, gouges, worn threads and bearings, sharp corners which may produce additional stress conditions and reduce system load capacity. Grinding is the recommended procedure to restore smooth surfaces. The maximum allowance for reduction of a product's original dimension due to wear or repair before removal from service is: 1. Any single direction: no more than 10% of original dimension; 2. Two directions: no more than 5% of each dimension. For detailed instructions on specific products, see the application and warning information for that product. Any greater reduction may necessitate a reduced Working Load Limit. Any crack or deformation in a fitting is sufficient cause to withdraw the snatch block from service. Snatch Block Snatch blocks must be regularly inspected, lubricated, and maintained for peak efficiency and extended useful- ness. Their proper use and maintenance is equal in importance to other mechanical equipment. The frequency of inspection and lubrication is dependent upon frequency and periods of use, environmental conditions, and the user's good judgment. Inspection: At a minimum, the following should be inspected, repaired if possible, and removed from service if necessary: 1. Wear on pins or axles, rope grooves, side plates, bushings, and fittings. Excessive wear may be a cause to replace parts or remove block or sheave from service. 2. Deformation in side plates, pins and axles, fitting attachment points, trunnions, etc. Deformation can be caused by abusive service and/or overload and may be a cause to remove block or sheave from service. 3. Misalignment or wobble in sheaves. 4. Security of nuts, bolts, and other locking methods, especially after reassembly following a tear down inspec- tion. Original securing method should be used; e.g., staking, set screw, cotter pin, cap screw. 5. Pins retained by snap rings should be checked for missing or loose rings. 6. Sheave pin nuts should be checked for proper positioning. 7. Deformation or corrosion of hook and nut threads. 8. Surface condition and deformation of hook (see "Fitting Maintenance" and ANSI 830.10.) 9. Hook latch for deformation, proper fit and operation. 10. Remove from service any bushings with cracks on inside diameter or bushing end. Bushings that are cracked and/or extended beyond sheave hub are indications of bushing overload. Lubrication The frequency of lubrication depends upon frequency and period of snatch block use as well as environmental condi- tions, which are contingent upon the user's good judgment. Assuming normal product use, bronze bushings (not self lu- bricating) should be lubricated using a lithium-based grease of medium consistency every 8 hours for continuous opera- tion or every 7 days for intermittent operation. Further Information Please refer to OSHA Rule 1926.550(g) for personnel hoisting by cranes and derricks, and OSHA Directive CPL 2-1.29 - "Interim Inspection Procedures During Communication Tower Construction Activities" for specific information regarding using snatch block systems for these applications. SNATCH BLOCKS - WARNINGS AND INFO.