TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Remove valve has since been eliminated and. on those 1. Cut locking wire and remove three cap screws (A) and flat washers attaching fan drive control valve (C) to engines so equipped, a cover plate is used to rear fan drive housing. Discard cap screws. cover the valve oil passages and will be installed 2. Loosen cap screw (B) until screw is free of threads. during engine overhaul. The fan tower has been 3. Remove and discard control valve (C) and cap screw redesigned to eliminate the valve mounting (B). 4. Remove brass gasket (D). Remove and discard surface and the need for the cover plate. mounting gasket. Install 1. Install new mounting gasket, brass gasket (D), and cover. Secure cover with four cap screws, flat washers, Note. A limited number of engines were and locking wire. equipped with a fan control valve. The need for a Figure 5-77. Removing fan drive control valve-engines with fan control valve. 5-46