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TB-1-1520-238-30-19

Auxiliary Power Unit (APU) Clutch P/N 388600-5, 125 Bearing Replenish or Replace For All AH-64 Aircraft

ASSEMBLIES/COMPONENTS/PARTS AFFECTED

REPLACEMENT PARTS

Figure 1. Exploded View APU Clutch Assembly

CLUTCH DISASSEMBLY PROCEDURES.

Figure 2. P/N 296844-1 ­ Holding Fixture

Figure 3. P/N 298171-1 Splined Output Adapter Holder

Figure 5. P/N 298168-1 ­ Spanner Wrench

Figure 6. P/N 298530-5 Press Tool

Figure 7. P/N 321­688-1 ­ Bearing Plate

INSPECTION PROCEDURES

INSPECTION PROCEDURES cont'd

PROCEDURES FOR REGREASING THE ANNULAR BALL BEARING (25).

Figure 8. Regreasing Procedure Worksheet.

CLUTCH ASSEMBLY PROCEDURES cont'd

Figure 9. P/N 298169-1 ­ Seal Installation Tool

Figure 10. P/N 298170-1 ­ Seal Forming Tool

Figure 11. Gasket Worksheet

Lubricate seal (22) with Mobilgrease28

Figure 12. P/N 298166-2 ­ Bearing Installation Driver

Figure 13. P/N 298166-1 ­ Bearing Installation Driver

Figure 14

Figure 14. Use of Spanner Wrench

Figure 16. PTO Clutch Data Plate

Figure 17. Clutch Replacement / Regreasing Data Sheet

SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED.

WEIGHT AND BALANCE

DISTRIBUTION

Subject: DA Form 2028

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