TM 9-2815-225-34&P 3-3. TASK SUMMARY TASK PROCEDURES PARA 3-4. Lifting Engine 3-5. Draining Engine 3-6. Cleaning a.  General Instructions b.  Importance of Cleaning c.  External Engine Cleaning d.  Disassembled Parts Cleaning e.  Castings f.  Oil Passages g.  Oil Seals, Electrical Cables, and Flexible Hoses h.  Ball-Roller Bearings 3-7. Inspection a.  General Instructions b.  Castings c.  Bail-Roller Bearings d.  Studs, Bolts, and Screws e.  Gears f.  Bearings, Bushings, and Bushing-Type Bearings g.  Oil Seals h.  Core Hole Expansion Plugs 3-8. Wear Limits and Tolerances 3-9. Repair a.  General Instructions b.  Castings c.  Ball-Roller Bearings d.  Studs e.  Gears f.  Bushings and Bushing-Type Bearings g.  Oil Seals h.  Cylinder Block and Cylinder Head 3-10. Assembly a.  General b.  Precautionary Rules c.  Pipe Plugs 3-2