Quantcast FIGURE 3-23.  Starter Solenoid Test Circuit - TM-9-2815-253-24_60

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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 3-24.3.  Testing. 3-24.3.1  Testing Starter (Installed). a. Make  sure  batteries  are  fully  charged  and  that  all  battery  and  starter  cables  are  serviceable  and  properly installed. b. Set multimeter for volts DC and connect as shown in FIGURE 3-23, Test A.  If voltage is indicated solenoid is defective. c. Momentarily connect a jumper as shown in FIGURE 3-23, Test B.  Multimeter should indicate battery voltage and starter  should  crank  the  engine.    If  multimeter  does  not  read  battery  voltage,  the  solenoid  is  defective.    If multimeter indicates battery voltage, but starter does not operate, starter is defective. FIGURE 3-23.  Starter Solenoid Test Circuit 3-24.3.2  Testing Starter Components. a. Test armature for grounds. (1) Set multimeter for ohms and touch armature shaft and each commutator bar with multimeter leads. (2) If  multimeter  indicates  a  low  reading  (approximately  zero  ohms),  armature  is  grounded  and  requires replacing. b. Test armature for open circuits. (1) Check for continuity between commutator segments with multimeter. (2) If an open circuit is indicated, armature must be replaced. c. Test field coil. (1) Check for continuity between brushes with a multimeter. (2) If there is no continuity indicated, field coil is open and field coil frame must be replaced. (3) Check for continuity between field coil frame and brushes. (4) If continuity is indicated, field coil is grounded and field coil frame must be replaced. d. Test solenoid. (1) Check for continuity between solenoid terminals M and B with a multimeter.  Refer to FIGURE 3-24. (2) No continuity should be indicated when solenoid plunger is in normal (out) position. (3) Push solenoid plunger in and observe multimeter.  Multimeter should indicate continuity.  If no continuity is indicated, solenoid must be replaced. 3-43


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