CHAPTER 3 SERVICE AND LUBRICATION 3-1 PERIODIC SERVICE 3-1.1 Table 3-1 contains operator services to be performed at the intervals indicated. B = Before; D = During; A = After; W = Weekly; M = Monthly Table 3-1.  Periodic Services INTERVAL Item to be Procedures Equipment is ITEM Inspected Check for and have repaired not ready/ NO. B D A W M or adjusted as necessary. available if: 1 x x Mast Lighting For night operations, check lights illumination. Discharge Piping 2 x x Hoses Check flexible hoses for wear or Wire braid reinforce- damage. ment is exposed. 3 x Pipes/Connections Check for leaks. Unrepairable leaks cause significant pressure loss. Mast 4 x x Mast Weldment Check for damage and for cracked Mast is not or rusted welds. structurally sound. 5 x Crown Block Assy Check sheaves for wear. 6 x Sprocket Assy Check sprocket for worn or broken One or more teeth teeth. are missing. 7 x Pulldown Assy Check chain for wear and damaged Connecting links or missing cotter pins. are loose. 8 x Mast Raising Cylinder Check that hardware is secure and Hardware is loose pivots are adequately lubricated. or missing. Mud Pump Drive 9 x Drive Case Check oil level. 10 x x Mud Pump Check for oil contamination Oil contains grit or Check oil level. water. Air Compressor and Drive 11 x Shaft Seal Check for air leaks. 12 x Oil Cooler Check cooler fins for damage, connections for leaks. 13 x x x Oil Filter Check filter gage. Gage indicates in red area. 14 x Cooler Motor Check for leaks. 3-1