TM 10-3930-669-34 CHAPTER 4 FUEL SYSTEM MAINTENANCE Para Contents Page 4-1 Introduction............................................................................................................................ 4-1 4-2 Intake Manifold Replacement................................................................................................ 4-2 4-3 Fuel Tank Replacement ........................................................................................................ 4-4 4-4 Injection Pump Adjustment  ................................................................................................... 4-6 4-5 Injection Pump Replacement ................................................................................................ 4-17 4-1.  INTRODUCTION. This chapter contains maintenance instructions for removing, replacing, installing, repairing, and testing fuel components authorized by the Maintenance Allocation Chart (MAC) at the Direct Support and General Support Maintenance level. 4-1