Testing

ARMY TM 9-6115-464-34 AIR FORCE TO 36C2-3-445-2 NAVY NAVFAC P-8-624-34 f. Assembly. (1) Assemble starter and solenoid in reverse order of disassembly procedures using new gaskets and o-rings. Inspect all insulating washers and bushings. Replace if defective. (2) If brushes were replaced, run in new brushes as follows: (a) Cover armature commutator with a piece of No. 00 grit sandpaper. (b) Temporarily install brushes and commutator end frame and run in brushes. (c) Disassemble, remove sandpaper, and clean armature commutator and brushholder assembly with filtered compressed air. g. Testing. (1) Test starter solenoid assembly as follows: (a) Remove connector (14, Figure 3-4). (b) Apply 24 Vdc between the negative terminal and the small terminal of the solenoid assembly. (c) Solenoid actuation will be indicated by an audible “click” and rearward movement of the drive gear. (d) Remove 24 Vdc from solenoid assembly terminals. (e) The drive gear should move forward with an audible click. (f) Replace solenoid assembly if it fails to function properly. (g) Install connector. (2) Conduct starter assembly motoring test as follows: (a) Remove connector (14, Figure 3-4). (b) Install starter assembly into motoring test circuit shown in figure 3-2. (c) Adjust rheostat until voltmeter indicates 22.5 volts. (d) Check indications of ammeter and tachometer. (e) Ammeter should indicate 58 amperes maximum with starter turning at 9300 rpm. (f) If current and speed are low, disassemble starter and check for high resistance at internal connection. (g) If current is high and rpm low, disassemble and inspect armature shaft and bushings for wear or misalignment. (h) Do not install connector (14, Figure 3-4) until stalled torque test is completed. (3) Conduct starter assembly stalled torque, test as follows: CAUTION Rheostat must have a minimum capacity of 1000 amperes. Failure to observe this caution could result in equipment damage. (a) Install starter assembly in test setup shown in figure 3-3. (b) Adjust rheostat until voltmeter indicates 14 Vdc. 3-14