DISASSEMBLE AND INSPECT 145HS775 RAMP CONTROL VALVE (Continued)

DISASSEMBLE AND INSPECT 145HS775 RAMP CONTROL VALVE (Continued) - TM-55-1520-240-23-6_1007

ASSEMBLE 114H5111 RAMP CONTROL VALVE (AVIM)

TM-55-1520-240-23-6 CH-47D Heilcopter Manual
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TM 55-1520-240-23-6 7-267.1 DISASSEMBLE AND INSPECT 145HS775 RAMP CONTROL VALVE (Continued) 7-267.1 NOTE Due to potting requirements, it may be necessary to replace connector and both diodes if it becomes necessary to remove wires from back of connector. 46. Proceed as follows to remove solenoid valves (81) and connector (87) from valve body (5). a. Remove lockwire from four screws (88) and remove screws from connector and valve body. b. Remove connector (87) from valve body (5). It may be necessary to pry connector from valve body due to use of potting compound to secure and insulate wires and diodes behind connector. c. Remove potting compound from around wires, diodes (89 and 90), and back of connector (87). d. Unsolder wires and diodes (89 and 90) from back of connector (87). Make sure all potting is removed from wires of solenoid valve (81) being removed. e. Remove lockwire from locking ring (82) and remove locking ring. Do not pull hard on solenoid valve as this could damage valve wiring. f. Remove solenoid valve(s) (81) from valve body (5) and pull wires from body. 47. Inspect seal bearing surfaces (91, 92, 93, and 94), and threaded areas (95, 96, 97, and 98) inside valve body (5). Seal bearing surfaces shall be as smooth as possible and free of nicks or scratches. Threads shall be free of contamination and not damaged in any way. FOLLOW-ON MAINTENANCE: None END OF TASK 7-980

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