TM 55-1520-240-23-6
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INSPECT CARGO DOOR SEQUENCE VALVE (AVIM)
(Continued)
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b.
Mark spring guide (11) 0.4 inch from top of
housing (12). Use marking pencil (E271).
c.
Apply pressure to spring guide (11) until
mark aligns with top of housing (12). Use
spring compression tester (13). Pressure to
align mark and housing top shall not exceed
50 pounds.
11.
Measure free length of spring (14). Free length
shall be 0.54 to 0.56 inch.
12.
Compress small spring (14) to 0.23 inch. Use
spring compression tester (13). Force needed to
compress spring shall be 5.5 pounds.
13.
Compress large spring (15) to 0.65 to 0.66
inch. Use spring compression tester (13). Force
needed to compress spring shall be 9 to 11
pounds.
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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