Section IX PREVENTIVE MAINTENANCE 1-29. DROPPED ENGINE INSPECTION Technical Inspector shall perform overall inspection of APU if it was dropped. Check for any broken, bent or kinked tube assemblies, broken air inlet screen, dented combustor housing, damaged electrical harness/ connectors, damaged fuel manifold assembly and other obvious damage. Refer to DA PAM 738-751 for applicable forms, records and worksheets. CHECKS AND SERVICES

TM 55-2835-208-23 Section IX PREVENTIVE MAINTENANCE 1-29. DROPPED ENGINE INSPECTION Technical Inspector shall perform overall inspection of APU if it was dropped. Check for any broken, bent or kinked tube assemblies, broken air inlet screen, dented combustor housing, damaged electrical harness/ connectors, damaged fuel manifold assembly and other obvious damage. Refer to DA PAM 738-751 for applicable forms, records and worksheets. CHECKS AND SERVICES 1-30. OIL CONTAMINATION INSPECTION Technical Inspector shall refer to Table 1-2 for oil contamination criteria. Table 1-2. Contamination Criteria PARTICLE FORM METAL TYPE (NOTE 2) DISPOSITION Magnetic Fuzz Splinter or granular Flakes smaller than 0.060 square inch Flakes larger than 0.060 square inch Nonmagnetic Splinter or granular Flakes smaller than 0.060 square inch Flakes larger than 0.060 square inch Change oil and filter (Task 1-28). Run APU, refer to TM55-1520-237-T. Recheck magnetic plug and oil filter. (Note 1). Forward APU to Depot Change oil and filter (Task 1-28). Run APU, refer to TM55-1520-237-T. Recheck magnetic plug and oil filter. (Note 1). Forward APU to Depot Forward APU to Depot Change oil and filter (Task 1-28). Run APU, refer to TM55-1520-237-T. Recheck magnetic plug and oil filter. (Note 1). Forward APU to Depot NOTES: 1. If particles are found after test; forward APU to Depot 2. Definitions of particle forms: Flake: thin flat piece or layer Fuzz: light particles or fibers Granular: consisting of or appearing to consist of grains Splinter: thin piece or sliver split off lengthwise 1-34 Change 4