Figure 3-36. Alternator and Related Parts

Figure 3-35. Belt Adjustment and Replacement

TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual
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1. Lockwire 7. Belt 2, Connector 8. Screw 3. Receptacle mounting 9. Washer screw 10. Adjustable brace 4. Screw 11. Screw 5. Washer 12. Washer 6. Washer 13. Spacer 14, Alternator 21. Fuse 15. Screw 22. Adjusting Screw 16. Washer 17. Support bracket 18. Screw 19. Washer 20. Mounting bracket F i g u r e 3 - 3 6 . A l t e r n a t o r a n d R e l a t e d P a r t s (Q) Remove two screws (15) and washers (16) securing support bracket (17) to the mounting bracket (20), and remove the support bracket. (j) Remove screw (18) and washer (19) sec- uring mounting bracket (20) to the front cover and re- move mounting bracket. 2. Installation. Install the battery charging alternator (14), adjustable brace (10) and mounting bracket (20) using removal steps in reverse order as required. Wind lockwire (1) one turn around threads at rcct-ptacle mounting screw (3) before tightening screw and attach:ng iockwlre to Installed comector (2). c. Adjustment. With the engine generator set run;ing, adjust the alternator as follows: (1) Discomect negative terminal from battery. (2) Comect a voltmeter across terminals of either slave receptacle ad adjust alternator output by rotating adjusting screw (22) located on the rear housing. (3) To increase alternator output, rotate output adjusting screw (22) clockwise. To decrease alter- nator output, rotate adjusting screw (22) countercIock - wise. 3 - 9 0 C h a n g e 1 2

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