TM 5-3805-262-343-15. AUXILIARY STEERING PUMP AND MOTOR MAINTENANCE (CONT)d. AuxiliarySteeringMotor(Cont).TESTING(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)Connect auxiliary steering motor to test equipment as shown.Close switch and look at voltmeter on tester. Turn tester load controluntil voltmeter indicates 12 volts.Record tester ammeter indication.Hold tachometer against armature shaft. Record tachometer indication.Set switch to off position.Disconnect auxiliary steering motor and test equipment.If ammeter indicated 30 amperes or less and tachometer indicated 6950 rpmor more, auxiliary steering motor is okay. Join auxiliary steering pumpand motor (page 3-533).If armature rpm was less than 6950 rpm and ammeter indication was higherthan 30 amperes, check for damaged bearings, short circuit in armature,or a ground connection in field coil.If armature did not turn and ammeter indication was higher than 30 am-peres, check terminal studs for short circuit or check for a damagedbearing.If armature did not turn and ammeter indication was zero, check for anopen field coil, open armature, or broken or worn brush springs.If armature speed was less than 6950 rpm and ammeter indication was lessthan 30 amperes, check for bad connection between brushes and field coilor a dirty commutator.If armature speed was 6950 rpm or more and ammeter indication was morethan 30 amperes replace field coil and housing as an assembly.3-558
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