TM10-3930-660-20 CHAPTER 4 ENGINE  MAINTENANCE 4-1. GENERAL This chapter provides maintenance procedures assigned to the organizational level for the engine oil system. Also included in this chapter are maintenance procedures for various engine components that are not part Of the oil system. To find a specific maintenance procedure, see the maintenance task summary below. 4-2 . GENERAL ENGINE MAINTENANCE TASK SUMMARY TASK PAGE PARA . PROCEDURES NO. 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 Engine Assembly - Service Cylinder Head - Adjust Rocker Lever Covers   -  Replace Engine Oil Level Gage - Replace Engine Oil Filler Neck - Replace Engine Oil Sampling Valve - Replace Exhaust Manifold   -  Replace Intake Manifold Cover   -  Replace 4-2 4-4 4-7 4-9 4-10 4-11 4-12 4-13 4-1