TM 5-3820-256-10 Table 2-4.  Sub Drive Assembly 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 Drive case Check oil level. 2 X Driveshafts Lubricate driveshafts as recommended. X Driveshafts and bearings Check for signs of worn bearings. Check if bearings are making noise or running hot. 3 X Power take-off Check lubricant.  Add lubricant as required. 4 X  X Hydraulic pumps Check seals and hose connections for oil leaks.  Listen for unusual noises. Table 2-5.  Drawworks Assembly 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: I X Bevel gear case Check oil level.  Add lubricant as No oil or very low required.   oil level. X Check case for leaks. 2 X Driveshafts Lubricate driveshafts as recommended. 3 X Brake bands Check linings for wear. Lining is less than 1/4: thick. 4 X All drums Check wire rope for frayed strands. Wire rope is frayed or badly kinked. 5 X Third drum Check clutch control linkage connec- tions are secure. Table 2-6.  Hydraulic System 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: I X Reservoir Check oil level sight gage.  Add No oil or very low hydraulic oil as required. oil level. 2 X  X Hydraulic oil filter Check dirt alarm gage. Gage indicates CHANGE. 3     X Hydraulic oil piping Check lines for leaks. 2-28