TEST MOTOR SHAFT SEAL (570973) (AVIM) (Continued)

TM-55-1520-240-23-6 CH-47D Heilcopter Manual
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TM 55-1520-240-23-6 7-76 TEST MOTOR SHAFT SEAL (570973) (AVIM) (Continued) 7-76 1. Install coupling shaft (428318) (1) in motor (2). 2. Turn shaft (428318) (1) by hand. Shaft shall turn evenly without binding or noise. 3. Remove coupling shaft (428318) (1). 4. Install test block (3) on motor (2). 5. Install pressure caps (4) on inlet port (5) and outlet port (6). 6. Fill motor (2) through port (7) with hydraulic fluid (E199). 7. Connect case drain port (7) to test stand (8). Hydraulic fluid ejected under pressure can cause injury to personnel. Hydraulic fluid sprayed into the air is a fire hazard. 8. Apply 100 psi to port (7). 9. Check shaft seal (9) for leaks. Shaft seal leaks shall not exceed 5 drops in 10 minutes. Other leaks shall not be enough to form 1 drop. 10. Release pressure to 0 psi at port (7). 11. Disconnect motor (2) from test stand (8). 12. Drain hydraulic fluid (E199) from motor (2). Use container and cloths (E120) for spilled fluid. 13. Remove block (3) from motor (2). INSPECT FOLLOW-ON MAINTENANCE: None END OF TASK 7-318

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