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 1. Cut locking wire (A). 2. Remove two slotted nuts (B) and flat washers at- taching oil pickup elbow to pump housing. 3. Remove pickup elbow (C) from housing. 4. Remove five slotted nuts (D) and flat washers at- taching scavenge housing cover. 5. Remove housing cover (E) by tapping cover gently to loosen cover from locating dowel pins. Install 1. Position scavenge housing cover (E) on scavenge housing dowel pins. 2. Install five slotted nuts (D) and flat washers securing housing cover (E) to housing. 3. Position pickup elbow (C) on pump housing. 4. Install two slotted nuts (B) and flat washers securing elbow (C) to housing 5. Install locking wire (A) securing nuts. Figure 6-76. Removing or installing scavenge housing cover and oil pickup elbow (FSN 2815-895-6430 oil pump). Remove 1. Slide two scavenge driven impellers (A) from impeller shafts. 2. Remove driven impeller shaft (B) from scavenge housing. 3. Slide scavenge drive impeller (C) from impeller drive shaft. 4. Remove two slotted nuts (D) and flat washers. Separate and remove scavenge housing from pressure housing. Install 1. Position scavenge housing on pressure housing. Install two slotted nuts (D) securing scavenge housing on pressure housing. 2. Slide scavenge drive impeller (C) on impeller drive shaft. 3. Install driven impeller shaft (B) in scavenge housing. 4. Slide two scavenge driven impellers (A) on impeller shafts. Figure 6-77. Removing or installing oil pump scavenge driven impellers, driven impeller shaft, and scavenge housing. 6-80