TM 5-3820-256-10 Table 2-14.  Rig Frame/Jacks 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 Frame lighting For night transporting, check all Clearance lights clearance lights illuminate.  Replace are not illuminating. bulbs as required. 2 X Mud flaps Check mud flaps are in good condition. Replace worn out or damaged flaps. 3 X Driller's and helper's Check for broken welds.  Repair minor platform damage; replace if extensively dama- ged. X Check that locking bolts are in place. 4 X Jacks and jack pads Check jack pads for broken welds. Check for leaks at hydraulic hose connections. 5 X Hand jack Check operation; replace failed jack. 6 X Rig frame Check for broken welds.  Report any Frame has broken damage to unit maintenance. welds or structural damage. Table 2-15.  Winch 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 Winch covers Check that props hold covers open Radiator-protecting during winch operation. covers are not in place.       X Close covers. 2 X Winch Cable Check cable for breaks or separated Wire rope is broken strands. or strands separa- ted.      X Lubricate cable. 3 X Guide rollers Check for cracks, loose bolts, and free roller movement. X Lubricate zerk fittings. 4 X Hydraulic motor Check for leaks at hose connections. Leakscannot be stopped. 5 X Control Valve Check for proper operation. Control fails to Operate winch. 2-32