TM 5-4240-5501-148PALTERNATOR11/2 AmpNOTE: Ground wire or rectifier assembly must not touchthe engine during this test.Start engine. With engine running, pierce stator wireswith probes from load lamp or touch terminals in rectifierbox. Fig. 154 and 155. If load lamp lights, the stator issatisfactory. If load lamp does not light, the flywheelmagnet or stator is inoperative. The flywheel should beexamined to be sure magnet is charged. If required,replace flywheel or the stator.Fig. 154 Testing StatorFig. 155 Testing Stator (Alternator Style)Replacing Defective StatorRemove the blower housing, rotating screen, clutchassembly and flywheel. Note and remember location ofstator wires, under one coil spool, then between starterand drive unit housing as shown in Fig. 156. Removeground wire or rectifier assembly from starter drivehousing. Remove the two stator mounting screws andbushings.Fig. 156 Stator Assembly LocationInstall new stator assembly with stator mounting screwsand bushings. Be sure leads are properly positioned asshown in Figure 157. While tightening mounting screws,push stator toward crankshaft to take up clearance inbushing. Torque mounting screws 18 to 24 inch pounds(1.6 to 2.1 Nm). Before re-assembly, locate stator wiresagainst cylinder in order to clear ring gear and flywheel.Attach ground wire or rectifier assembly to drive housing.Replace flywheel and torque clutch housing as noted onspecification chart. Re-assemble rotating screen andblower housing.Fig. 157 Assembling StatorTesting RectifierDo not start engine. Use the #19236 VOA meter to testresistance from charging terminal to ground, as shown inFig. 158 or 159. Now reverse test leads and recheck.One way there should be a meter reading. The otherway there should not be a meter reading. The actualmeter readings are not important. If the meter shows areading both ways, or neither way, the rectifier isdefective. Replace rectifier.49
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