REPLACE BUSHINGS IN FORWARD ENGINE MOUNT LUGS (AVIM) (Continued)

REPLACE BUSHINGS IN FORWARD ENGINE MOUNT LUGS (AVIM) (Continued) - TM-55-1520-240-23-3_413

INSTALL FORWARD ENGINE MOUNT CAP ASSEMBLY

TM-55-1520-240-23-3 CH-47D Heilcopter Manual
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TM 55-1520-240-23-3 4-33 REPLACE BUSHINGS IN FORWARD ENGINE MOUNT LUGS (AVIM) (Continued) 4-33 13. Measure inside diameter (20) of hole (19). Record measurement. 14. Measure thru-bore thickness (21). Record measurement. 15. Make new shoulderless bushing (17) from steel (E367) as follows: a. Make bushing length (22) equal to lug width (21). (See measurement recorded in step 14.) b. Make outside diameter (23) of bushing (17) 0.0008 to 0.0023 inch more than inside diameter (20) of hole (19). (See measurement recorded in step 13.) c. Make inside diameter (24) of bushing (17) equal to 0.8144 inch. 16. Coat inside of lug (4) with epoxy primer (E292). Wear gloves (E184.1). NOTE Bushing must be installed in lug while epoxy primer (E292) is still wet. 17. Install new shoulderless bushing (17) in lug (4). 18. Wipe off any excess epoxy primer (E292) from lug (4). Use cloths (E135). FOLLOW-ON MAINTENANCE: None END OF TASK 4-176

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