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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 SECTION IV.  INTAKE AND EXHAUST SYSTEM MAINTENANCE 3-6.  INTAKE MANIFOLD. 3-6.1.  Removal. a. Remove air intake piping.  Refer to end item maintenance manual. b. Tag and disconnect electrical leads from heater plugs (1, FIGURE 3-2). c. If damaged or defective, remove heater plugs (1) from manifold. d. Remove eight bolts (2) and eight washers (3) securing intake manifold (4); remove manifold (4) and four gaskets (5).  Discard gaskets (5). e. Cover all openings. 3-6.2.  Inspect and Measure. a. Inspect manifold for cracks, corrosion, or other damage.  Replace if damaged. b. Inspect attaching hardware for damage.  Replace if damaged. c. Inspect heater plugs for damage. d. Set  multimeter  for  ohms  and  test  heater  plugs.    Normal  reading  is  4  to  5  ohms.    Zero  resistance  indicates  a shorted heater and a high reading indicates an open heater. 3-6.3.  Installation. a. Remove all covers. b. Install new or tested heater plugs (1, FIGURE 3-2) in manifold (4). c. Clean intake manifold (4) and cylinder head mating surfaces of any traces of old gasket. d. Position four new gaskets (5) and intake manifold (4) on cylinder head. e. Install eight washers (3) and eight bolts (2).  Tighten bolts to 78 in-lbs (8.8 Nm). f. Connect electrical leads to heater plugs.  Refer to end item maintenance manual.  Remove tags. g. Install air intake piping.  Refer to end item maintenance manual. FIGURE 3-2.  Intake Manifold Change 3  3-13


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