TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 SMOKE GENERATION SYSTEM REPLACEMENT 0094 00 REMOVAL (Continued) NOTE There are two configurations of the smoke generating system. Early systems use a dual solenoid configuration. It was found that fuel, trapped between the two solenoids and heated by the close proximity of the exhaust, expanded and caused internal seals of the solenoids to fail resulting in un-commanded smoke generation and higher fuel consumption. Newer, improved systems use a single solenoid system. The newer system removes the two flywheel-end mounted solenoids and incorporates a single solenoid at the damper end of the engine where it is cooler. Engineering Release Record (ERR) CO-M6185 authorizes converting to the single solenoid configuration. 10. Removal of components for the single solenoid system is done in the same manner as those on the double solenoid system. NOTE Parts unique to the single solenoid smoke generation system are underlined in the illustration below: Manual shutoff valve (39 ). Adapter (40 ) between manual shutoff valve and solenoid (20). Elbow (41 ) between solenoid (20) and fuel line (6). Mounting bracket (42 ). Fuel line (43 ) located between bulkhead elbow (12) and elbow fitting (19). 43 20 6 41 42 40 39 12 19 WP 0094 00-8