TM 5-3820-256-10 2-6.  Rig Tender Preventive Maintenance Checks and Services Table 2-19.  Crane Preventive Maintenance Checks and Services ITEM INTERVAL Item to be Procedures Equipment is NO. Inspected Check for and have repaired not ready/ B  D  A  W  M or adjusted as necessary. available if: 1 X Hydraulic Fluid Reservoir Check fluid level in sight gage.  Add Fluid level is not hydraulic as needed. visible. 2 X Crane Visually inspect crane for loose parts. Parts are loose or missing. 3 X Snatch Block and Crane Check for deformation or cracks. Snatch Block or Hook crane hook is de- formed or cracked. 4 X Boom Tip Sheave Check for signs of grooving. Wire rope has worn groove into sheave. 5 X Wire rope/cable Check wire rope for breaks, separated strands, kinks, bird-caging, or evidence of heat damage. 6 X Winch drum Check for cracks or excessive wear. Drum is cracked or excessively worn. 7 X Manual pullout extension Check for cracks.  Extension is cracked. 8 X Hydraulic extension boom Check for hydraulic leaks in the Boom is cracked or and cylinder cylinder and cracks in the boom. leaks cannot be stopped. 9 X Extension cylinder pins Check for cracks around mounting Cracks are visible holes.  Check that pins are securely around mounting installed. holes. 10 X Main boom and cylinder Check for hydraulic leaks in the cylin- Boom is cracked der and cracks in the boom. or leaks cannot be stopped. 11 X Main cylinder pins and Check for proper installation of pins. Cracks are visible bushings Check for cracks around bushing around mounting mounting holes. holes. 12 X Main boom hinge pin and Check for proper pin installation. Hinge pin impro- bushings Check for cracks around mounting perly installed. holes. Cracks visible around mounting holes. 13 X Boom turret Check for cracks in plates and welds. Plate or weld is Check for loose mounting bolts. cracked. 14 X    X Hydraulic winch Check winch motor for hydraulic Leaks cannot be leaks. stopped. 15 X Base assembly Check for cracks and loose bolts. Housing is cracked or bolts are loose. 16 X    X Rotation Motor Check motor for hydraulic leaks. Leaks cannot be stopped. 17 X Remote control pendant Check for loose connections or Wire loose or cracked wire. broken. 2-35