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 and remove two drilled head bolts (A) attaching scavenge oil pickup tube support to crankcase assembly. 2. Cut locking wire and remove two drilled head bolts (B) attaching pickup tube brackets to crankcase. 3. Cut locking wire and remove two drilled bead bolts (C) attaching scavenge oil pickup tube to oil pump assembly. 4. Remove the support and oil pickup tube as a unit. Remove and discard scavenge oil pickup tube gasket (8). 5. Cut locking wire and remove two drilled head bolts (E) attaching oil pan pressure relief tube brackets to crankcase assembly. 6. Remove pressure relief tube and spill tube junction outlet housing (F) as a unit. ?. Cut locking wire and remove drilled head bolt (G) attaching spill tube bracket to crankcase assembly. 8. Cut locking wire and remove two drilled head bolts (H) attaching spill tube to oil pump assembly. Remove tube. Remove and discard spill tube gasket. Install 1. Position a new spill tube gasket on oil pump assembly. Position spill tube on oil pump. Install two drilled head bolts (H) securing tube to oil pump and install locking wire securing bolts. 2. Install drilled head bolt (G) securing spill tube bracket to crankcase assembly and install locking wire securing bolt. 3. Position pressure relief tube and spill tube junction outlet housing (F) in crankcase assembly. 4. Install two drilled head bolts (E) securing oil pan pressure relief tube brackets to crankcase assembly and install locking wire securing bolts. 5. Position a new scavenge oil pickup tube gasket (D) on oil pump. Position the support and scavenge oil pickup tube as a unit in crankcase assembly. 6. Install two drilled head bolts (C) securing oil pickup tube to oil pump and install locking wire securing bolts. 7. Install two drilled head bolts (B) securing pickup tube brackets to crankcase and install locking wire securing bolts. 8. Install two drilled head bolts (A) securing scavenge oil pickup tube support to crankcase and install locking wire securing bolts. Figure 5-148. Removing or installing scavenge oil pickup, oil pan pressure relief tube, and oil spill tube. 5-84